Extensions.Validate 方法

參考

定義

命名空間:: System.Xml.Schema

組件:: System.Xml.XDocument.dll

組件:: System.Xml.Linq.dll

組件:: netstandard.dll

重要

部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。

驗證 XDocument、XElement 或 XAttribute 是否符合 XmlSchemaSet 中的 XSD。

多載

Validate(XDocument, XmlSchemaSet, ValidationEventHandler)	這個方法會驗證 XDocument 是否符合 XmlSchemaSet 中的 XSD。
Validate(XAttribute, XmlSchemaObject, XmlSchemaSet, ValidationEventHandler)	這個方法會驗證 XAttribute 是否符合指定的 XmlSchemaObject 和 XmlSchemaSet。
Validate(XDocument, XmlSchemaSet, ValidationEventHandler, Boolean)	驗證 XDocument 是否符合 XmlSchemaSet 中的 XSD，並選擇性地將後結構描述驗證資訊集 (PSVI) 填入 XML 樹狀目錄。
Validate(XElement, XmlSchemaObject, XmlSchemaSet, ValidationEventHandler)	這個方法會驗證 XElement 樹狀子目錄是否符合指定的 XmlSchemaObject 和 XmlSchemaSet。
Validate(XAttribute, XmlSchemaObject, XmlSchemaSet, ValidationEventHandler, Boolean)	驗證 XAttribute 是否符合指定的 XmlSchemaObject 和 XmlSchemaSet，並選擇性地將後結構描述驗證資訊集 (PSVI) 填入 XML 樹狀目錄。
Validate(XElement, XmlSchemaObject, XmlSchemaSet, ValidationEventHandler, Boolean)	驗證 XElement 樹狀子目錄是否符合指定的 XmlSchemaObject 和 XmlSchemaSet，並選擇性地將後結構描述驗證資訊集 (PSVI) 填入 XML 樹狀目錄。

備註

這些方法會使用基礎 XmlReader 來驗證 XSD 的 XML 樹狀結構。

驗證錯誤和警告訊息是使用 ValidationEventHandler 委派來處理。如果未提供任何事件處理常式給這些方法，驗證錯誤就會公開為 XmlSchemaValidationException 。驗證警告不會擲 XmlSchemaValidationException 回。

其中有些擴充方法選擇性地允許擴展後架構驗證資訊集， (PSVI) 。

Validate(XDocument, XmlSchemaSet, ValidationEventHandler)

來源:: XNodeValidator.cs

來源:: XNodeValidator.cs

來源:: XNodeValidator.cs

這個方法會驗證 XDocument 是否符合 XmlSchemaSet 中的 XSD。

public:
[System::Runtime::CompilerServices::Extension]
 static void Validate(System::Xml::Linq::XDocument ^ source, System::Xml::Schema::XmlSchemaSet ^ schemas, System::Xml::Schema::ValidationEventHandler ^ validationEventHandler);

public static void Validate (this System.Xml.Linq.XDocument source, System.Xml.Schema.XmlSchemaSet schemas, System.Xml.Schema.ValidationEventHandler? validationEventHandler);

public static void Validate (this System.Xml.Linq.XDocument source, System.Xml.Schema.XmlSchemaSet schemas, System.Xml.Schema.ValidationEventHandler validationEventHandler);

static member Validate : System.Xml.Linq.XDocument * System.Xml.Schema.XmlSchemaSet * System.Xml.Schema.ValidationEventHandler -> unit

<Extension()>
Public Sub Validate (source As XDocument, schemas As XmlSchemaSet, validationEventHandler As ValidationEventHandler)

參數

source: XDocument

要驗證的 XDocument。

schemas: XmlSchemaSet

要用來驗證的 XmlSchemaSet。

validationEventHandler: ValidationEventHandler

在讀取器遇到驗證錯誤時發生之事件的 ValidationEventHandler。若為 null，則於發生驗證錯誤時擲回例外狀況。

例外狀況

XmlSchemaValidationException

針對 XML 結構描述定義語言 (XSD) 驗證錯誤而擲回。

範例

下列範例會建立 XmlSchemaSet，然後針對結構描述設定驗證兩個 XDocument 物件。其中一個文件有效，另一個無效。

                string xsdMarkup =  
    @"<xsd:schema xmlns:xsd='http://www.w3.org/2001/XMLSchema'>  
       <xsd:element name='Root'>  
        <xsd:complexType>  
         <xsd:sequence>  
          <xsd:element name='Child1' minOccurs='1' maxOccurs='1'/>  
          <xsd:element name='Child2' minOccurs='1' maxOccurs='1'/>  
         </xsd:sequence>  
        </xsd:complexType>  
       </xsd:element>  
      </xsd:schema>";  
XmlSchemaSet schemas = new XmlSchemaSet();  
schemas.Add("", XmlReader.Create(new StringReader(xsdMarkup)));  

XDocument doc1 = new XDocument(  
    new XElement("Root",  
        new XElement("Child1", "content1"),  
        new XElement("Child2", "content1")  
    )  
);  

XDocument doc2 = new XDocument(  
    new XElement("Root",  
        new XElement("Child1", "content1"),  
        new XElement("Child3", "content1")  
    )  
);  

Console.WriteLine("Validating doc1");  
bool errors = false;  
doc1.Validate(schemas, (o, e) =>  
                     {  
                         Console.WriteLine("{0}", e.Message);  
                         errors = true;  
                     });  
Console.WriteLine("doc1 {0}", errors ? "did not validate" : "validated");  

Console.WriteLine();  
Console.WriteLine("Validating doc2");  
errors = false;  
doc2.Validate(schemas, (o, e) =>  
                     {  
                         Console.WriteLine("{0}", e.Message);  
                         errors = true;  
                     });  
Console.WriteLine("doc2 {0}", errors ? "did not validate" : "validated");

                Dim errors As Boolean = False  

Private Sub XSDErrors(ByVal o As Object, ByVal e As ValidationEventArgs)  
    Console.WriteLine("{0}", e.Message)  
    errors = True  
End Sub  

Sub Main()  
    Dim xsdMarkup As XDocument = _  
    <?xml version='1.0'?>  
    <xsd:schema xmlns:xsd='http://www.w3.org/2001/XMLSchema'>  
        <xsd:element name='Root'>  
            <xsd:complexType>  
                <xsd:sequence>  
                    <xsd:element name='Child1' minOccurs='1' maxOccurs='1'/>  
                    <xsd:element name='Child2' minOccurs='1' maxOccurs='1'/>  
                </xsd:sequence>  
            </xsd:complexType>  
        </xsd:element>  
    </xsd:schema>  

    Dim schemas As XmlSchemaSet = New XmlSchemaSet()  
    schemas.Add("", xsdMarkup.CreateReader)  

    Dim doc1 As XDocument = _  
    <?xml version='1.0'?>  
    <Root>  
        <Child1>content1</Child1>  
        <Child2>content2</Child2>  
    </Root>  

    Dim doc2 As XDocument = _  
    <?xml version='1.0'?>  
    <Root>  
        <Child1>content1</Child1>  
        <Child3>content1</Child3>  
    </Root>  

    Console.WriteLine("Validating doc1")  
    errors = False  
    doc1.Validate(schemas, AddressOf XSDErrors)  
    Console.WriteLine("doc1 {0}", IIf(errors, "did not validate", "validated"))  

    Console.WriteLine()  
    Console.WriteLine("Validating doc2")  
    errors = False  
    doc2.Validate(schemas, AddressOf XSDErrors)  
    Console.WriteLine("doc2 {0}", IIf(errors, "did not validate", "validated"))  
End Sub

這個範例會產生下列輸出：

Validating doc1  
doc1 validated  

Validating doc2  
The element 'Root' has invalid child element 'Child3'. List of possible elements expected: 'Child2'.  
doc2 did not validate

備註

此擴充方法會驗證是否符合 XDocument 中的 XmlSchemaSet 架構內容模型。

適用於

Validate(XAttribute, XmlSchemaObject, XmlSchemaSet, ValidationEventHandler)

來源:: XNodeValidator.cs

來源:: XNodeValidator.cs

來源:: XNodeValidator.cs

這個方法會驗證 XAttribute 是否符合指定的 XmlSchemaObject 和 XmlSchemaSet。

public:
[System::Runtime::CompilerServices::Extension]
 static void Validate(System::Xml::Linq::XAttribute ^ source, System::Xml::Schema::XmlSchemaObject ^ partialValidationType, System::Xml::Schema::XmlSchemaSet ^ schemas, System::Xml::Schema::ValidationEventHandler ^ validationEventHandler);

public static void Validate (this System.Xml.Linq.XAttribute source, System.Xml.Schema.XmlSchemaObject partialValidationType, System.Xml.Schema.XmlSchemaSet schemas, System.Xml.Schema.ValidationEventHandler? validationEventHandler);

public static void Validate (this System.Xml.Linq.XAttribute source, System.Xml.Schema.XmlSchemaObject partialValidationType, System.Xml.Schema.XmlSchemaSet schemas, System.Xml.Schema.ValidationEventHandler validationEventHandler);

static member Validate : System.Xml.Linq.XAttribute * System.Xml.Schema.XmlSchemaObject * System.Xml.Schema.XmlSchemaSet * System.Xml.Schema.ValidationEventHandler -> unit

<Extension()>
Public Sub Validate (source As XAttribute, partialValidationType As XmlSchemaObject, schemas As XmlSchemaSet, validationEventHandler As ValidationEventHandler)

參數

source: XAttribute

要驗證的 XAttribute。

partialValidationType: XmlSchemaObject

XmlSchemaObject，指定要驗證的樹狀子目錄。

schemas: XmlSchemaSet

要用來驗證的 XmlSchemaSet。

validationEventHandler: ValidationEventHandler

在讀取器遇到驗證錯誤時發生之事件的 ValidationEventHandler。若為 null，則於發生驗證錯誤時擲回例外狀況。

例外狀況

XmlSchemaValidationException

針對 XML 結構描述定義語言 (XSD) 驗證錯誤而擲回。

範例

                string xsdMarkup =  
    @"<xsd:schema xmlns:xsd='http://www.w3.org/2001/XMLSchema'>  
       <xsd:element name='Root'>  
        <xsd:complexType>  
         <xsd:simpleContent>  
          <xsd:extension base='xsd:string'>  
           <xsd:attribute name='Lang' use='required'>  
            <xsd:simpleType>  
             <xsd:restriction base='xsd:token'>  
              <xsd:enumeration value='C#'/>  
              <xsd:enumeration value='VB'/>  
             </xsd:restriction>  
            </xsd:simpleType>  
           </xsd:attribute>  
          </xsd:extension>  
         </xsd:simpleContent>  
        </xsd:complexType>  
       </xsd:element>  
      </xsd:schema>";  

XmlSchemaSet schemas = new XmlSchemaSet();  
schemas.Add("", XmlReader.Create(new StringReader(xsdMarkup)));  

XDocument doc1 = new XDocument(  
    new XElement("Root",  
        new XAttribute("Lang", "C#")  
    )  
);  

Console.WriteLine("Validating doc1 ...");  
bool errors = false;  
doc1.Validate(schemas, (sender, e) =>  
    {  
        Console.WriteLine(e.Message);  
        errors = true;  
    }, true);  
Console.WriteLine("doc1 {0}", errors ? "did not validate" : "validated");  

Console.WriteLine();  
Console.WriteLine("Validating Lang attribute ...");  
XAttribute lang = doc1.Root.Attribute("Lang");  

errors = false;  
lang.Validate(lang.GetSchemaInfo().SchemaAttribute, schemas, (sender, e) =>  
    {  
        Console.WriteLine(e.Message);  
        errors = true;  
    });  
Console.WriteLine("lang {0}", errors ? "did not validate" : "validated");  

// the following makes the Lang attribute invalid according to the schema  
lang.Value = "VC";  

Console.WriteLine();  
Console.WriteLine("Validating Lang attribute ...");  

errors = false;  
lang.Validate(lang.GetSchemaInfo().SchemaAttribute, schemas, (sender, e) =>  
    {  
        Console.WriteLine(e.Message);  
        errors = true;  
    });  
Console.WriteLine("lang {0}", errors ? "did not validate" : "validated");

                Dim errors As Boolean = False  

Private Sub XSDErrors(ByVal o As Object, ByVal e As ValidationEventArgs)  
    Console.WriteLine("{0}", e.Message)  
    errors = True  
End Sub  

Sub Main()  
    Dim xsdMarkup As XDocument = _  
      <?xml version='1.0'?>  
      <xsd:schema xmlns:xsd='http://www.w3.org/2001/XMLSchema'>  
          <xsd:element name='Root'>  
              <xsd:complexType>  
                  <xsd:simpleContent>  
                      <xsd:extension base='xsd:string'>  
                          <xsd:attribute name='Lang' use='required'>  
                              <xsd:simpleType>  
                                  <xsd:restriction base='xsd:token'>  
                                      <xsd:enumeration value='C#'/>  
                                      <xsd:enumeration value='VB'/>  
                                  </xsd:restriction>  
                              </xsd:simpleType>  
                          </xsd:attribute>  
                      </xsd:extension>  
                  </xsd:simpleContent>  
              </xsd:complexType>  
          </xsd:element>  
      </xsd:schema>  

    Dim schemas As XmlSchemaSet = New XmlSchemaSet()  
    schemas.Add("", xsdMarkup.CreateReader)  

    Dim doc1 As XDocument = <?xml version='1.0'?>  
                            <Root Lang='C#'/>  

    Console.WriteLine("Validating doc1 ...")  
    errors = False  
    doc1.Validate(schemas, AddressOf XSDErrors, True)  
    Console.WriteLine("doc1 {0}", IIf(errors, "did not validate", "validated"))  

    Console.WriteLine()  
    Console.WriteLine("Validating Lang attribute ...")  
    Dim lang As XAttribute = doc1.Root.Attribute("Lang")  

    errors = False  
    lang.Validate(lang.GetSchemaInfo().SchemaAttribute, schemas, AddressOf XSDErrors)  
    Console.WriteLine("lang {0}", IIf(errors, "did not validate", "validated"))  

    ' the following makes the Lang attribute invalid according to the schema  
    lang.Value = "VC"  

    Console.WriteLine()  
    Console.WriteLine("Validating Lang attribute ...")  

    errors = False  
    lang.Validate(lang.GetSchemaInfo().SchemaAttribute, schemas, AddressOf XSDErrors)  
    Console.WriteLine("lang {0}", IIf(errors, "did not validate", "validated"))  
End Sub

這個範例會產生下列輸出：

Validating doc1 ...  
doc1 validated  

Validating Lang attribute ...  
lang validated  

Validating Lang attribute ...  
The 'Lang' attribute is invalid - The value 'VC' is invalid according to its datatype 'Token' - The Enumeration constraint failed.  
lang did not validate

備註

您可以使用這個方法來驗證是否符合 XAttribute 架構。當您修改屬性時，通常會使用這個方法，而且您想要確定它仍然符合其架構。您可以驗證整個檔，但驗證屬性需要較少的處理時間。

如果您針對 validationEventHandler 傳遞 null ，這個方法會在驗證錯誤時引發例外狀況。驗證警告不會引發例外狀況。

若要驗證屬性，您可以使用的 XmlSchemaObject 實例。您可以透過各種方式取得此實例。簡單方式如下：

驗證檔是否符合架構。
藉由呼叫 Validate 擴充方法，將後架構驗證資訊集 (PSVI) 。
GetSchemaInfo呼叫擴充方法以擷取實作的物件 IXmlSchemaInfo 。從擷取的物件中，您可以取得 XmlSchemaObject 。
- 如果您取得 XmlSchemaObject 的 XElement ，則類型會是 XmlSchemaElement 。
- 如果您取得 XmlSchemaObject 的 XAttribute ，則類型會是 XmlSchemaAttribute 。

擁有的 XmlSchemaObject 實例之後，您可以使用這個方法來驗證屬性。

適用於

Validate(XDocument, XmlSchemaSet, ValidationEventHandler, Boolean)

來源:: XNodeValidator.cs

來源:: XNodeValidator.cs

來源:: XNodeValidator.cs

驗證 XDocument 是否符合 XmlSchemaSet 中的 XSD，並選擇性地將後結構描述驗證資訊集 (PSVI) 填入 XML 樹狀目錄。

public:
[System::Runtime::CompilerServices::Extension]
 static void Validate(System::Xml::Linq::XDocument ^ source, System::Xml::Schema::XmlSchemaSet ^ schemas, System::Xml::Schema::ValidationEventHandler ^ validationEventHandler, bool addSchemaInfo);

public static void Validate (this System.Xml.Linq.XDocument source, System.Xml.Schema.XmlSchemaSet schemas, System.Xml.Schema.ValidationEventHandler? validationEventHandler, bool addSchemaInfo);

public static void Validate (this System.Xml.Linq.XDocument source, System.Xml.Schema.XmlSchemaSet schemas, System.Xml.Schema.ValidationEventHandler validationEventHandler, bool addSchemaInfo);

static member Validate : System.Xml.Linq.XDocument * System.Xml.Schema.XmlSchemaSet * System.Xml.Schema.ValidationEventHandler * bool -> unit

<Extension()>
Public Sub Validate (source As XDocument, schemas As XmlSchemaSet, validationEventHandler As ValidationEventHandler, addSchemaInfo As Boolean)

參數

source: XDocument

要驗證的 XDocument。

schemas: XmlSchemaSet

要用來驗證的 XmlSchemaSet。

validationEventHandler: ValidationEventHandler

在讀取器遇到驗證錯誤時發生之事件的 ValidationEventHandler。若為 null，則於發生驗證錯誤時擲回例外狀況。

addSchemaInfo: Boolean

指出是否要填入 Post-Schema-Validation Infoset (PSVI) 的 Boolean。

例外狀況

XmlSchemaValidationException

針對 XML 結構描述定義語言 (XSD) 驗證錯誤而擲回。

範例

下列範例包含 XSD，其 Child2 定義具有 Att1 預設值之屬性的專案。成功驗證檔之後，具有預設值的屬性會新增至 XML 樹狀結構。請注意，預設屬性不會新增至 doc2 ，而不會針對架構進行驗證。

                string xsdMarkup =  
    @"<xsd:schema xmlns:xsd='http://www.w3.org/2001/XMLSchema'>  
       <xsd:element name='Root'>  
        <xsd:complexType>  
         <xsd:sequence>  
          <xsd:element name='Child1' minOccurs='1' maxOccurs='1'/>  
          <xsd:element name='Child2' minOccurs='1' maxOccurs='1'>  
           <xsd:complexType>  
            <xsd:simpleContent>  
             <xsd:extension base='xsd:string'>  
              <xsd:attribute name='Att1' default='Att1 Default Value'/>  
             </xsd:extension>  
            </xsd:simpleContent>  
           </xsd:complexType>  
          </xsd:element>  
         </xsd:sequence>  
        </xsd:complexType>  
       </xsd:element>  
      </xsd:schema>";  
XmlSchemaSet schemas = new XmlSchemaSet();  
schemas.Add("", XmlReader.Create(new StringReader(xsdMarkup)));  

XDocument doc1 = new XDocument(  
    new XElement("Root",  
        new XElement("Child1", "c1"),  
        new XElement("Child2", "c2")  
    )  
);  

XDocument doc2 = new XDocument(  
    new XElement("Root",  
        new XElement("Child1", "content1"),  
        new XElement("Child3", "content1")  
    )  
);  

Console.WriteLine("Validating doc1");  
bool errors = false;  
doc1.Validate(schemas, (o, e) =>  
                           {  
                               Console.WriteLine("{0}", e.Message);  
                               errors = true;  
                           }, true);  
Console.WriteLine("doc1 {0}", errors ? "did not validate" : "validated");  

Console.WriteLine();  
Console.WriteLine("Validating doc2");  
errors = false;  
doc2.Validate(schemas, (o, e) =>  
                     {  
                         Console.WriteLine("{0}", e.Message);  
                         errors = true;  
                     }, true);  
Console.WriteLine("doc2 {0}", errors ? "did not validate" : "validated");  

Console.WriteLine();  
Console.WriteLine("Contents of doc1:");  
Console.WriteLine(doc1);  

Console.WriteLine();  
Console.WriteLine("Contents of doc2:");  
Console.WriteLine(doc2);

                Dim errors As Boolean = False  

Private Sub XSDErrors(ByVal o As Object, ByVal e As ValidationEventArgs)  
    Console.WriteLine("{0}", e.Message)  
    errors = True  
End Sub  

Sub Main()  
    Dim xsdMarkup As XDocument = _  
    <?xml version='1.0'?>  
    <xsd:schema xmlns:xsd='http://www.w3.org/2001/XMLSchema'>  
        <xsd:element name='Root'>  
            <xsd:complexType>  
                <xsd:sequence>  
                    <xsd:element name='Child1' minOccurs='1' maxOccurs='1'/>  
                    <xsd:element name='Child2' minOccurs='1' maxOccurs='1'>  
                        <xsd:complexType>  
                            <xsd:simpleContent>  
                                <xsd:extension base='xsd:string'>  
                                    <xsd:attribute name='Att1' default='Att1 Default Value'/>  
                                </xsd:extension>  
                            </xsd:simpleContent>  
                        </xsd:complexType>  
                    </xsd:element>  
                </xsd:sequence>  
            </xsd:complexType>  
        </xsd:element>  
    </xsd:schema>  
    Dim schemas As XmlSchemaSet = New XmlSchemaSet()  
    schemas.Add("", xsdMarkup.CreateReader)  

    Dim doc1 As XDocument = <?xml version='1.0'?>  
                            <Root>  
                                <Child1>c1</Child1>  
                                <Child2>c2</Child2>  
                            </Root>  
    Dim doc2 As XDocument = <?xml version='1.0'?>  
                            <Root>  
                                <Child1>content1</Child1>  
                                <Child3>content1</Child3>  
                            </Root>  

    Console.WriteLine("Validating doc1")  
    errors = False  
    doc1.Validate(schemas, AddressOf XSDErrors, True)  
    Console.WriteLine("doc1 {0}", IIf(errors, "did not validate", "validated"))  

    Console.WriteLine()  
    Console.WriteLine("Validating doc2")  
    errors = False  
    doc2.Validate(schemas, AddressOf XSDErrors, True)  
    Console.WriteLine("doc2 {0}", IIf(errors, "did not validate", "validated"))  

    Console.WriteLine()  
    Console.WriteLine("Contents of doc1:")  
    Console.WriteLine(doc1)  

    Console.WriteLine()  
    Console.WriteLine("Contents of doc2:")  
    Console.WriteLine(doc2)  
End Sub

這個範例會產生下列輸出：

Validating doc1  
doc1 validated  

Validating doc2  
The element 'Root' has invalid child element 'Child3'. List of possible elements expected: 'Child2'.  
doc2 did not validate  

Contents of doc1:  
<Root>  
  <Child1>c1</Child1>  
  <Child2 Att1="Att1 Default Value">c2</Child2>  
</Root>  

Contents of doc2:  
<Root>  
  <Child1>content1</Child1>  
  <Child3>content1</Child3>  
</Root>

下列範例會以 PSVI 填入樹狀結構。驗證之後，它會列印樹狀結構中根據 PSVI 不正確所有元素和屬性。

                static void DumpInvalidNodes(XElement el)  
{  
    if (el.GetSchemaInfo().Validity != XmlSchemaValidity.Valid)  
        Console.WriteLine("Invalid Element {0}",  
            el.AncestorsAndSelf()  
            .InDocumentOrder()  
            .Aggregate("", (s, i) => s + "/" + i.Name.ToString()));  
    foreach (XAttribute att in el.Attributes())  
        if (att.GetSchemaInfo().Validity != XmlSchemaValidity.Valid)  
            Console.WriteLine("Invalid Attribute {0}",  
                att  
                .Parent  
                .AncestorsAndSelf()  
                .InDocumentOrder()  
                .Aggregate("",  
                    (s, i) => s + "/" + i.Name.ToString()) + "/@" + att.Name.ToString()  
                );  
    foreach (XElement child in el.Elements())  
        DumpInvalidNodes(child);  
}  

static void Main(string[] args)  
{  
   string xsdMarkup =  
        @"<xsd:schema xmlns:xsd='http://www.w3.org/2001/XMLSchema'>  
           <xsd:simpleType name='GCType'>  
            <xsd:restriction base='xsd:token'>  
             <xsd:enumeration value='AAA'/>  
             <xsd:enumeration value='BBB'/>  
            </xsd:restriction>  
           </xsd:simpleType>  
           <xsd:element name='Root'>  
            <xsd:complexType>  
             <xsd:sequence>  
              <xsd:element name='Child1' minOccurs='1' maxOccurs='1'>  
               <xsd:complexType>  
                <xsd:sequence>  
                 <xsd:element name='GrandChild1' type='GCType'/>  
                 <xsd:element name='GrandChild2' type='GCType'/>  
                 <xsd:element name='GrandChild3' type='GCType'/>  
                </xsd:sequence>  
               </xsd:complexType>  
              </xsd:element>  
             </xsd:sequence>  
            </xsd:complexType>  
           </xsd:element>  
          </xsd:schema>";  

    XmlSchemaSet schemas = new XmlSchemaSet();  
    schemas.Add("", XmlReader.Create(new StringReader(xsdMarkup)));  

    XDocument doc1 = new XDocument(  
        new XElement("Root",  
            new XElement("Child1",  
                new XElement("GrandChild1", "AAA"),  
                new XElement("GrandChild2", "ZZZ"),  
                new XElement("GrandChild3", "ZZZ")  
            )  
        )  
    );  

    Console.WriteLine("Validating doc1 ...");  
    bool errors = false;  
    doc1.Validate(schemas, (sender, e) =>  
        {  
            Console.WriteLine(e.Message);  
            errors = true;  
        }, true);  
    Console.WriteLine("doc1 {0}", errors ? "did not validate" : "validated");  
    DumpInvalidNodes(doc1.Root);  
}

                Private Sub DumpInvalidNodes(ByVal el As XElement)  
    If el.GetSchemaInfo.Validity <> XmlSchemaValidity.Valid Then  
        Console.WriteLine("Invalid Element {0}", _  
            el _  
            .AncestorsAndSelf _  
            .InDocumentOrder() _  
            .Aggregate("", _  
                Function(ByVal s, ByVal i) s + "/" + i.Name.ToString()))  
    End If  
    For Each att As XAttribute In el.Attributes()  
        If att.GetSchemaInfo.Validity <> XmlSchemaValidity.Valid Then  
            Console.WriteLine("Invalid Attribute {0}", _  
                att _  
                .Parent _  
                .AncestorsAndSelf() _  
                .InDocumentOrder() _  
                .Aggregate("", _  
                    Function(ByVal s, ByVal i) s + "/" + i.Name.ToString()) + _  
                    "/@" + att.Name.ToString())  
        End If  
    Next  
    For Each child As XElement In el.Elements()  
        DumpInvalidNodes(child)  
    Next  
End Sub  

Dim errors As Boolean = False  

Private Sub XSDErrors(ByVal o As Object, ByVal e As ValidationEventArgs)  
    Console.WriteLine("{0}", e.Message)  
    errors = True  
End Sub  

Sub Main()  
    Dim xsdMarkup As XDocument = _  
        <?xml version='1.0'?>  
        <xsd:schema xmlns:xsd='http://www.w3.org/2001/XMLSchema'>  
            <xsd:simpleType name='GCType'>  
                <xsd:restriction base='xsd:token'>  
                    <xsd:enumeration value='AAA'/>  
                    <xsd:enumeration value='BBB'/>  
                </xsd:restriction>  
            </xsd:simpleType>  
            <xsd:element name='Root'>  
                <xsd:complexType>  
                    <xsd:sequence>  
                        <xsd:element name='Child1' minOccurs='1' maxOccurs='1'>  
                            <xsd:complexType>  
                                <xsd:sequence>  
                                    <xsd:element name='GrandChild1' type='GCType'/>  
                                    <xsd:element name='GrandChild2' type='GCType'/>  
                                    <xsd:element name='GrandChild3' type='GCType'/>  
                                </xsd:sequence>  
                            </xsd:complexType>  
                        </xsd:element>  
                    </xsd:sequence>  
                </xsd:complexType>  
            </xsd:element>  
        </xsd:schema>  

    Dim schemas As XmlSchemaSet = New XmlSchemaSet()  
    schemas.Add("", xsdMarkup.CreateReader)  

    Dim doc1 As XDocument = _  
        <?xml version='1.0'?>  
        <Root>  
            <Child1>  
                <GrandChild1>AAA</GrandChild1>  
                <GrandChild2>ZZZ</GrandChild2>  
                <GrandChild3>ZZZ</GrandChild3>  
            </Child1>  
        </Root>  

    Console.WriteLine("Validating doc1 ...")  
    errors = False  
    doc1.Validate(schemas, AddressOf XSDErrors, True)  
    Console.WriteLine("doc1 {0}", IIf(errors, "did not validate", "validated"))  
    DumpInvalidNodes(doc1.Root)  
End Sub

這個範例會產生下列輸出：

Validating doc1 ...  
The 'GrandChild2' element is invalid - The value 'ZZZ' is invalid according to its datatype 'GCType' - The Enumeration constraint failed.  
The 'GrandChild3' element is invalid - The value 'ZZZ' is invalid according to its datatype 'GCType' - The Enumeration constraint failed.  
doc1 did not validate  
Invalid Element /Root  
Invalid Element /Root/Child1  
Invalid Element /Root/Child1/GrandChild2  
Invalid Element /Root/Child1/GrandChild3

備註

此擴充方法會驗證是否符合 XDocument 中的 XmlSchemaSet 架構內容模型。

如果為 addSchemaInfotrue ，這個方法會以 PSVI) 後架構驗證資訊集 (填入 XML 樹狀結構。

使用 PSVI 填入 XML 樹狀結構有兩個步驟。

首先，批註會新增至樹狀結構中的所有節點，讓您呼叫 Extensions.GetSchemaInfo 樹 Extensions.GetSchemaInfo 狀結構中的專案或屬性。
其次，XSD 中定義的預設元素和屬性會新增至 XML 樹狀結構。藉由呼叫其中 GetSchemaInfo 一個方法，您可以判斷特定專案或屬性是否從 XSD 新增為預設專案或屬性。

適用於

Validate(XElement, XmlSchemaObject, XmlSchemaSet, ValidationEventHandler)

來源:: XNodeValidator.cs

來源:: XNodeValidator.cs

來源:: XNodeValidator.cs

這個方法會驗證 XElement 樹狀子目錄是否符合指定的 XmlSchemaObject 和 XmlSchemaSet。

public:
[System::Runtime::CompilerServices::Extension]
 static void Validate(System::Xml::Linq::XElement ^ source, System::Xml::Schema::XmlSchemaObject ^ partialValidationType, System::Xml::Schema::XmlSchemaSet ^ schemas, System::Xml::Schema::ValidationEventHandler ^ validationEventHandler);

public static void Validate (this System.Xml.Linq.XElement source, System.Xml.Schema.XmlSchemaObject partialValidationType, System.Xml.Schema.XmlSchemaSet schemas, System.Xml.Schema.ValidationEventHandler? validationEventHandler);

public static void Validate (this System.Xml.Linq.XElement source, System.Xml.Schema.XmlSchemaObject partialValidationType, System.Xml.Schema.XmlSchemaSet schemas, System.Xml.Schema.ValidationEventHandler validationEventHandler);

static member Validate : System.Xml.Linq.XElement * System.Xml.Schema.XmlSchemaObject * System.Xml.Schema.XmlSchemaSet * System.Xml.Schema.ValidationEventHandler -> unit

<Extension()>
Public Sub Validate (source As XElement, partialValidationType As XmlSchemaObject, schemas As XmlSchemaSet, validationEventHandler As ValidationEventHandler)

參數

source: XElement

要驗證的 XElement。

partialValidationType: XmlSchemaObject

XmlSchemaObject，指定要驗證的樹狀子目錄。

schemas: XmlSchemaSet

要用來驗證的 XmlSchemaSet。

validationEventHandler: ValidationEventHandler

在讀取器遇到驗證錯誤時發生之事件的 ValidationEventHandler。若為 null，則於發生驗證錯誤時擲回例外狀況。

例外狀況

XmlSchemaValidationException

針對 XML 結構描述定義語言 (XSD) 驗證錯誤而擲回。

範例

                string xsdMarkup =  
    @"<xsd:schema xmlns:xsd='http://www.w3.org/2001/XMLSchema'>  
       <xsd:element name='Root'>  
        <xsd:complexType>  
         <xsd:sequence>  
          <xsd:element name='Child1' minOccurs='1' maxOccurs='1'>  
           <xsd:complexType>  
            <xsd:sequence>  
             <xsd:element name='GrandChild1' minOccurs='1' maxOccurs='1'/>  
             <xsd:element name='GrandChild2' minOccurs='1' maxOccurs='2'/>  
            </xsd:sequence>  
           </xsd:complexType>  
          </xsd:element>  
         </xsd:sequence>  
        </xsd:complexType>  
       </xsd:element>  
      </xsd:schema>";  

XmlSchemaSet schemas = new XmlSchemaSet();  
schemas.Add("", XmlReader.Create(new StringReader(xsdMarkup)));  

XDocument doc1 = new XDocument(  
    new XElement("Root",  
        new XElement("Child1",  
            new XElement("GrandChild1", "gc"),  
            new XElement("GrandChild2", "gc")  
        )  
    )  
);  

Console.WriteLine("Validating doc1 ...");  
bool errors = false;  
doc1.Validate(schemas, (sender, e) =>  
    {  
        Console.WriteLine(e.Message);  
        errors = true;  
    }, true);  
Console.WriteLine("doc1 {0}", errors ? "did not validate" : "validated");  

Console.WriteLine();  
Console.WriteLine("Validating Child1 after first edit ...");  
XElement child1 = doc1.Element("Root").Element("Child1");  
child1.Add(new XElement("GrandChild2", "gc"));  
errors = false;  
child1.Validate(child1.GetSchemaInfo().SchemaElement, schemas, (sender, e) =>  
    {  
        Console.WriteLine(e.Message);  
        errors = true;  
    });  
Console.WriteLine("child1 {0}", errors ? "did not validate" : "validated");  

// the following makes the Child1 element invalid according to the schema  
child1.Add(new XElement("GrandChild3", "gc"));  
Console.WriteLine();  
Console.WriteLine("Validating Child1 after second edit ...");  
child1.Validate(child1.GetSchemaInfo().SchemaElement, schemas, (sender, e) =>  
    {  
        Console.WriteLine(e.Message);  
        errors = true;  
    });  
Console.WriteLine("child1 {0}", errors ? "did not validate" : "validated");

                Dim errors As Boolean = False  

Private Sub XSDErrors(ByVal o As Object, ByVal e As ValidationEventArgs)  
    Console.WriteLine("{0}", e.Message)  
    errors = True  
End Sub  

Sub Main()  

    Dim xsdMarkup As XDocument = _  
        <?xml version='1.0'?>  
        <xsd:schema xmlns:xsd='http://www.w3.org/2001/XMLSchema'>  
            <xsd:element name='Root'>  
                <xsd:complexType>  
                    <xsd:sequence>  
                        <xsd:element name='Child1' minOccurs='1' maxOccurs='1'>  
                            <xsd:complexType>  
                                <xsd:sequence>  
                                    <xsd:element name='GrandChild1' minOccurs='1' maxOccurs='1'/>  
                                    <xsd:element name='GrandChild2' minOccurs='1' maxOccurs='2'/>  
                                </xsd:sequence>  
                            </xsd:complexType>  
                        </xsd:element>  
                    </xsd:sequence>  
                </xsd:complexType>  
            </xsd:element>  
        </xsd:schema>  

    Dim schemas As XmlSchemaSet = New XmlSchemaSet()  
    schemas.Add("", xsdMarkup.CreateReader)  

    Dim doc1 As XDocument = _  
        <?xml version='1.0'?>  
        <Root>  
            <Child1>  
                <GrandChild1>gc</GrandChild1>  
                <GrandChild2>gc</GrandChild2>  
            </Child1>  
        </Root>  

    Console.WriteLine("Validating doc1 ...")  
    errors = False  
    doc1.Validate(schemas, AddressOf XSDErrors, True)  
    Console.WriteLine("doc1 {0}", IIf(errors, "did not validate", "validated"))  

    Console.WriteLine()  
    Console.WriteLine("Validating Child1 after first edit ...")  
    Dim child1 As XElement = doc1.Element("Root").Element("Child1")  
    child1.Add(<GrandChild2>gc</GrandChild2>)  
    errors = False  
    child1.Validate(child1.GetSchemaInfo().SchemaElement, schemas, AddressOf XSDErrors)  
    Console.WriteLine("child1 {0}", IIf(errors, "did not validate", "validated"))  

    ' the following makes the Child1 element invalid according to the schema  
    child1.Add(<GrandChild3>gc</GrandChild3>)  
    Console.WriteLine()  
    Console.WriteLine("Validating Child1 after second edit ...")  
    child1.Validate(child1.GetSchemaInfo().SchemaElement, schemas, AddressOf XSDErrors)  
    Console.WriteLine("child1 {0}", IIf(errors, "did not validate", "validated"))  
End Sub

這個範例會產生下列輸出：

Validating doc1 ...  
doc1 validated  

Validating Child1 after first edit ...  
child1 validated  

Validating Child1 after second edit ...  
The element 'Child1' has invalid child element 'GrandChild3'.  
child1 did not validate

備註

您可以使用這個方法來驗證子樹狀結構 (與其根目錄) XElement 是否符合架構。當您修改子樹狀結構時，通常會使用這個方法，而且您想要確定它仍然符合其架構。您可以驗證整份檔，但只需要較少的處理時間來驗證子樹狀結構。

如果您針對 validationEventHandler 傳遞 null ，則此方法會在驗證錯誤時引發例外狀況。驗證警告不會引發例外狀況。

若要驗證子樹狀結構，請使用的 XmlSchemaObject 實例。您可以透過各種方式取得此實例。簡單方式如下：

驗證檔是否符合架構。
藉由呼叫 Validate 擴充方法，將後架構驗證資訊集 (PSVI) 。
GetSchemaInfo呼叫擴充方法以擷取實作的物件 IXmlSchemaInfo 。從擷取的物件中，您可以取得 XmlSchemaObject 。
- 如果您取得 XmlSchemaObject 的 XElement ，則類型會是 XmlSchemaElement 。
- 如果您取得 XmlSchemaObject 的 XAttribute ，則類型會是 XmlSchemaAttribute 。

擁有的 XmlSchemaObject 實例之後，您可以使用這個方法來驗證子樹狀結構。

適用於

Validate(XAttribute, XmlSchemaObject, XmlSchemaSet, ValidationEventHandler, Boolean)

來源:: XNodeValidator.cs

來源:: XNodeValidator.cs

來源:: XNodeValidator.cs

驗證 XAttribute 是否符合指定的 XmlSchemaObject 和 XmlSchemaSet，並選擇性地將後結構描述驗證資訊集 (PSVI) 填入 XML 樹狀目錄。

public:
[System::Runtime::CompilerServices::Extension]
 static void Validate(System::Xml::Linq::XAttribute ^ source, System::Xml::Schema::XmlSchemaObject ^ partialValidationType, System::Xml::Schema::XmlSchemaSet ^ schemas, System::Xml::Schema::ValidationEventHandler ^ validationEventHandler, bool addSchemaInfo);

public static void Validate (this System.Xml.Linq.XAttribute source, System.Xml.Schema.XmlSchemaObject partialValidationType, System.Xml.Schema.XmlSchemaSet schemas, System.Xml.Schema.ValidationEventHandler? validationEventHandler, bool addSchemaInfo);

public static void Validate (this System.Xml.Linq.XAttribute source, System.Xml.Schema.XmlSchemaObject partialValidationType, System.Xml.Schema.XmlSchemaSet schemas, System.Xml.Schema.ValidationEventHandler validationEventHandler, bool addSchemaInfo);

static member Validate : System.Xml.Linq.XAttribute * System.Xml.Schema.XmlSchemaObject * System.Xml.Schema.XmlSchemaSet * System.Xml.Schema.ValidationEventHandler * bool -> unit

<Extension()>
Public Sub Validate (source As XAttribute, partialValidationType As XmlSchemaObject, schemas As XmlSchemaSet, validationEventHandler As ValidationEventHandler, addSchemaInfo As Boolean)

參數

source: XAttribute

要驗證的 XAttribute。

partialValidationType: XmlSchemaObject

XmlSchemaObject，指定要驗證的樹狀子目錄。

schemas: XmlSchemaSet

要用來驗證的 XmlSchemaSet。

validationEventHandler: ValidationEventHandler

在讀取器遇到驗證錯誤時發生之事件的 ValidationEventHandler。若為 null，則於發生驗證錯誤時擲回例外狀況。

addSchemaInfo: Boolean

指出是否要填入 Post-Schema-Validation Infoset (PSVI) 的 Boolean。

例外狀況

XmlSchemaValidationException

針對 XML 結構描述定義語言 (XSD) 驗證錯誤而擲回。

範例

                static void DumpInvalidNodes(XElement el)  
{  
    if (el.GetSchemaInfo().Validity != XmlSchemaValidity.Valid)  
        Console.WriteLine("Invalid Element {0}",  
            el.AncestorsAndSelf()  
            .InDocumentOrder()  
            .Aggregate("", (s, i) => s + "/" + i.Name.ToString()));  
    foreach (XAttribute att in el.Attributes())  
        if (att.GetSchemaInfo().Validity != XmlSchemaValidity.Valid)  
            Console.WriteLine("Invalid Attribute {0}",  
                att  
                .Parent  
                .AncestorsAndSelf()  
                .InDocumentOrder()  
                .Aggregate("",  
                    (s, i) => s + "/" + i.Name.ToString()) + "/@" + att.Name.ToString()  
                );  
    foreach (XElement child in el.Elements())  
        DumpInvalidNodes(child);  
}  

static void Main(string[] args)  
{  
    string xsdMarkup =  
        @"<xsd:schema xmlns:xsd='http://www.w3.org/2001/XMLSchema'>  
       <xsd:element name='Root'>  
        <xsd:complexType>  
         <xsd:simpleContent>  
          <xsd:extension base='xsd:string'>  
           <xsd:attribute name='Lang' use='required'>  
            <xsd:simpleType>  
             <xsd:restriction base='xsd:token'>  
              <xsd:enumeration value='C#'/>  
              <xsd:enumeration value='VB'/>  
             </xsd:restriction>  
            </xsd:simpleType>  
           </xsd:attribute>  
          </xsd:extension>  
         </xsd:simpleContent>  
        </xsd:complexType>  
       </xsd:element>  
      </xsd:schema>";  

    XmlSchemaSet schemas = new XmlSchemaSet();  
    schemas.Add("", XmlReader.Create(new StringReader(xsdMarkup)));  

    XDocument doc1 = new XDocument(  
        new XElement("Root",  
            new XAttribute("Lang", "C#")  
        )  
    );  

    Console.WriteLine("Validating doc1 ...");  
    bool errors = false;  
    doc1.Validate(schemas, (sender, e) =>  
    {  
        Console.WriteLine(e.Message);  
        errors = true;  
    }, true);  
    Console.WriteLine("doc1 {0}", errors ? "did not validate" : "validated");  
    DumpInvalidNodes(doc1.Root);  

    Console.WriteLine();  
    Console.WriteLine("Validating Lang attribute ...");  
    XAttribute lang = doc1.Element("Root").Attribute("Lang");  

    errors = false;  
    lang.Validate(lang.GetSchemaInfo().SchemaAttribute, schemas, (sender, e) =>  
    {  
        Console.WriteLine(e.Message);  
        errors = true;  
    }, true);  
    Console.WriteLine("lang {0}", errors ? "did not validate" : "validated");  
    DumpInvalidNodes(doc1.Root);  

    // the following makes the Lang attribute invalid according to the schema  
    lang.Value = "VC";  

    Console.WriteLine();  
    Console.WriteLine("Validating Lang attribute ...");  

    errors = false;  
    lang.Validate(lang.GetSchemaInfo().SchemaAttribute, schemas, (sender, e) =>  
    {  
        Console.WriteLine(e.Message);  
        errors = true;  
    }, true);  
    Console.WriteLine("lang {0}", errors ? "did not validate" : "validated");  
    DumpInvalidNodes(doc1.Root);  
}

                Private Sub DumpInvalidNodes(ByVal el As XElement)  
    If el.GetSchemaInfo.Validity <> XmlSchemaValidity.Valid Then  
        Console.WriteLine("Invalid Element {0}", _  
            el _  
            .AncestorsAndSelf _  
            .InDocumentOrder() _  
            .Aggregate("", _  
                Function(ByVal s, ByVal i) s + "/" + i.Name.ToString()))  
    End If  
    For Each att As XAttribute In el.Attributes()  
        If att.GetSchemaInfo.Validity <> XmlSchemaValidity.Valid Then  
            Console.WriteLine("Invalid Attribute {0}", _  
                att _  
                .Parent _  
                .AncestorsAndSelf() _  
                .InDocumentOrder() _  
                .Aggregate("", _  
                    Function(ByVal s, ByVal i) s + "/" + i.Name.ToString()) + _  
                    "/@" + att.Name.ToString())  
        End If  
    Next  
    For Each child As XElement In el.Elements()  
        DumpInvalidNodes(child)  
    Next  
End Sub  

Dim errors As Boolean = False  

Private Sub XSDErrors(ByVal o As Object, ByVal e As ValidationEventArgs)  
    Console.WriteLine("{0}", e.Message)  
    errors = True  
End Sub  

Sub Main()  

    Dim xsdMarkup As XDocument = _  
        <?xml version='1.0'?>  
        <xsd:schema xmlns:xsd='http://www.w3.org/2001/XMLSchema'>  
            <xsd:element name='Root'>  
                <xsd:complexType>  
                    <xsd:simpleContent>  
                        <xsd:extension base='xsd:string'>  
                            <xsd:attribute name='Lang' use='required'>  
                                <xsd:simpleType>  
                                    <xsd:restriction base='xsd:token'>  
                                        <xsd:enumeration value='C#'/>  
                                        <xsd:enumeration value='VB'/>  
                                    </xsd:restriction>  
                                </xsd:simpleType>  
                            </xsd:attribute>  
                        </xsd:extension>  
                    </xsd:simpleContent>  
                </xsd:complexType>  
            </xsd:element>  
        </xsd:schema>  

    Dim schemas As XmlSchemaSet = New XmlSchemaSet()  
    schemas.Add("", xsdMarkup.CreateReader)  

    Dim doc1 As XDocument = <?xml version='1.0'?>  
                            <Root Lang='C#'/>  

    Console.WriteLine("Validating doc1 ...")  
    errors = False  
    doc1.Validate(schemas, AddressOf XSDErrors, True)  
    Console.WriteLine("doc1 {0}", IIf(errors, "did not validate", "validated"))  
    DumpInvalidNodes(doc1.Root)  

    Console.WriteLine()  
    Console.WriteLine("Validating Lang attribute ...")  
    Dim lang As XAttribute = doc1.Element("Root").Attribute("Lang")  

    errors = False  
    lang.Validate(lang.GetSchemaInfo().SchemaAttribute, schemas, AddressOf XSDErrors, True)  
    Console.WriteLine("lang {0}", IIf(errors, "did not validate", "validated"))  
    DumpInvalidNodes(doc1.Root)  

    ' the following makes the Lang attribute invalid according to the schema  
    lang.Value = "VC"  

    Console.WriteLine()  
    Console.WriteLine("Validating Lang attribute ...")  

    errors = False  
    lang.Validate(lang.GetSchemaInfo().SchemaAttribute, schemas, AddressOf XSDErrors, True)  
    Console.WriteLine("lang {0}", IIf(errors, "did not validate", "validated"))  
    DumpInvalidNodes(doc1.Root)  
End Sub

這個範例會產生下列輸出：

Validating doc1 ...  
doc1 validated  

Validating Lang attribute ...  
lang validated  

Validating Lang attribute ...  
The 'Lang' attribute is invalid - The value 'VC' is invalid according to its datatype 'Token' - The Enumeration constraint failed.  
lang did not validate  
Invalid Attribute /Root/@Lang

備註

您可以使用這個方法來驗證是否符合 XAttribute 架構。當您修改屬性時，通常會使用這個方法，而且您想要確定它仍然符合其架構。您可以驗證整個檔，但只驗證屬性需要較少的處理時間。

如果 addSchemaInfo 為 true ，這個方法會在 PSVI) (架構後驗證資訊集填入屬性。將 XML 樹狀結構填入 PSVI 之後，您可以在已驗證的屬性上呼叫 Extensions.GetSchemaInfo 。如果您要撰寫依賴所 GetSchemaInfo 傳回資料的程式碼，這會很有用。

如果您針對 validationEventHandler 傳遞 null ，則此方法會在驗證錯誤時引發例外狀況。驗證警告不會引發例外狀況。

若要驗證屬性，請使用的 XmlSchemaObject 實例。您可以透過各種方式取得這個實例。簡單方式如下：

驗證檔是否符合架構。
藉由呼叫 Validate 擴充方法，將後架構驗證資訊集新增 (PSVI) 。
GetSchemaInfo呼叫擴充方法以擷取實作 IXmlSchemaInfo 的物件。您可以從擷取的物件取得 XmlSchemaObject 。
- 如果您取得 XmlSchemaObject 的 XElement ，則類型會是 XmlSchemaElement 。
- 如果您取得 XmlSchemaObject 的 XAttribute ，則類型會是 XmlSchemaAttribute 。

擁有的 XmlSchemaObject 實例之後，您可以使用這個方法來驗證屬性。

適用於

Validate(XElement, XmlSchemaObject, XmlSchemaSet, ValidationEventHandler, Boolean)

來源:: XNodeValidator.cs

來源:: XNodeValidator.cs

來源:: XNodeValidator.cs

驗證 XElement 樹狀子目錄是否符合指定的 XmlSchemaObject 和 XmlSchemaSet，並選擇性地將後結構描述驗證資訊集 (PSVI) 填入 XML 樹狀目錄。

public:
[System::Runtime::CompilerServices::Extension]
 static void Validate(System::Xml::Linq::XElement ^ source, System::Xml::Schema::XmlSchemaObject ^ partialValidationType, System::Xml::Schema::XmlSchemaSet ^ schemas, System::Xml::Schema::ValidationEventHandler ^ validationEventHandler, bool addSchemaInfo);

public static void Validate (this System.Xml.Linq.XElement source, System.Xml.Schema.XmlSchemaObject partialValidationType, System.Xml.Schema.XmlSchemaSet schemas, System.Xml.Schema.ValidationEventHandler? validationEventHandler, bool addSchemaInfo);

public static void Validate (this System.Xml.Linq.XElement source, System.Xml.Schema.XmlSchemaObject partialValidationType, System.Xml.Schema.XmlSchemaSet schemas, System.Xml.Schema.ValidationEventHandler validationEventHandler, bool addSchemaInfo);

static member Validate : System.Xml.Linq.XElement * System.Xml.Schema.XmlSchemaObject * System.Xml.Schema.XmlSchemaSet * System.Xml.Schema.ValidationEventHandler * bool -> unit

<Extension()>
Public Sub Validate (source As XElement, partialValidationType As XmlSchemaObject, schemas As XmlSchemaSet, validationEventHandler As ValidationEventHandler, addSchemaInfo As Boolean)

參數

source: XElement

要驗證的 XElement。

partialValidationType: XmlSchemaObject

XmlSchemaObject，指定要驗證的樹狀子目錄。

schemas: XmlSchemaSet

要用來驗證的 XmlSchemaSet。

validationEventHandler: ValidationEventHandler

在讀取器遇到驗證錯誤時發生之事件的 ValidationEventHandler。若為 null，則於發生驗證錯誤時擲回例外狀況。

addSchemaInfo: Boolean

指出是否要填入 Post-Schema-Validation Infoset (PSVI) 的 Boolean。

例外狀況

XmlSchemaValidationException

針對 XML 結構描述定義語言 (XSD) 驗證錯誤而擲回。

範例

                string xsdMarkup =  
    @"<xsd:schema xmlns:xsd='http://www.w3.org/2001/XMLSchema'>  
       <xsd:element name='Root'>  
        <xsd:complexType>  
         <xsd:sequence>  
          <xsd:element name='Child1' minOccurs='1' maxOccurs='1'/>  
          <xsd:element name='Child2' minOccurs='1' maxOccurs='1'>  
           <xsd:complexType>  
            <xsd:simpleContent>  
             <xsd:extension base='xsd:string'>  
              <xsd:attribute name='Att1' default='Att1 Default Value'/>  
             </xsd:extension>  
            </xsd:simpleContent>  
           </xsd:complexType>  
          </xsd:element>  
         </xsd:sequence>  
        </xsd:complexType>  
       </xsd:element>  
      </xsd:schema>";  
XmlSchemaSet schemas = new XmlSchemaSet();  
schemas.Add("", XmlReader.Create(new StringReader(xsdMarkup)));  

XDocument doc1 = new XDocument(  
    new XElement("Root",  
        new XElement("Child1", "c1"),  
        new XElement("Child2", "c2")  
    )  
);  

XDocument doc2 = new XDocument(  
    new XElement("Root",  
        new XElement("Child1", "content1"),  
        new XElement("Child3", "content1")  
    )  
);  

Console.WriteLine("Validating doc1");  
bool errors = false;  
doc1.Validate(schemas, (o, e) =>  
                     {  
                         Console.WriteLine("{0}", e.Message);  
                         errors = true;  
                     }, true);  
Console.WriteLine("doc1 {0}", errors ? "did not validate" : "validated");  

Console.WriteLine();  
Console.WriteLine("Validating doc2");  
errors = false;  
doc2.Validate(schemas, (o, e) =>  
                     {  
                         Console.WriteLine("{0}", e.Message);  
                         errors = true;  
                     }, true);  
Console.WriteLine("doc2 {0}", errors ? "did not validate" : "validated");  

Console.WriteLine();  
Console.WriteLine("Contents of doc1:");  
Console.WriteLine(doc1);  

Console.WriteLine();  
Console.WriteLine("Contents of doc2:");  
Console.WriteLine(doc2);

                Dim errors As Boolean = False  

Private Sub XSDErrors(ByVal o As Object, ByVal e As ValidationEventArgs)  
    Console.WriteLine("{0}", e.Message)  
    errors = True  
End Sub  

Sub Main()  
    Dim xsdMarkup As XDocument = _  
        <?xml version='1.0'?>  
        <xsd:schema xmlns:xsd='http://www.w3.org/2001/XMLSchema'>  
            <xsd:element name='Root'>  
                <xsd:complexType>  
                    <xsd:sequence>  
                        <xsd:element name='Child1' minOccurs='1' maxOccurs='1'/>  
                        <xsd:element name='Child2' minOccurs='1' maxOccurs='1'>  
                            <xsd:complexType>  
                                <xsd:simpleContent>  
                                    <xsd:extension base='xsd:string'>  
                                        <xsd:attribute name='Att1' default='Att1 Default Value'/>  
                                    </xsd:extension>  
                                </xsd:simpleContent>  
                            </xsd:complexType>  
                        </xsd:element>  
                    </xsd:sequence>  
                </xsd:complexType>  
            </xsd:element>  
        </xsd:schema>  
    Dim schemas As XmlSchemaSet = New XmlSchemaSet()  
    schemas.Add("", xsdMarkup.CreateReader)  

    Dim doc1 As XDocument = _  
        <?xml version='1.0'?>  
        <Root>  
            <Child1>c1</Child1>  
            <Child2>c2</Child2>  
        </Root>  

    Dim doc2 As XDocument = _  
        <?xml version='1.0'?>  
        <Root>  
            <Child1>content1</Child1>  
            <Child3>content1</Child3>  
        </Root>  

    Console.WriteLine("Validating doc1")  
    errors = False  
    doc1.Validate(schemas, AddressOf XSDErrors, True)  
    Console.WriteLine("doc1 {0}", IIf(errors, "did not validate", "validated"))  

    Console.WriteLine()  
    Console.WriteLine("Validating doc2")  
    errors = False  
    doc2.Validate(schemas, AddressOf XSDErrors, True)  
    Console.WriteLine("doc2 {0}", IIf(errors, "did not validate", "validated"))  

    Console.WriteLine()  
    Console.WriteLine("Contents of doc1:")  
    Console.WriteLine(doc1)  

    Console.WriteLine()  
    Console.WriteLine("Contents of doc2:")  
    Console.WriteLine(doc2)  
End Sub

這個範例會產生下列輸出：

Validating doc1  
doc1 validated  

Validating doc2  
The element 'Root' has invalid child element 'Child3'. List of possible elements expected: 'Child2'.  
doc2 did not validate  

Contents of doc1:  
<Root>  
  <Child1>c1</Child1>  
  <Child2 Att1="Att1 Default Value">c2</Child2>  
</Root>  

Contents of doc2:  
<Root>  
  <Child1>content1</Child1>  
  <Child3>content1</Child3>  
</Root>

備註

您可以使用這個方法來驗證子樹狀結構 (與 XElement 子樹狀結構根目錄) 符合架構。當您修改子樹狀結構時，通常會使用這個方法，而且您想要確定它仍然符合其架構。您可以驗證整個檔，但只驗證子樹狀結構需要較少的處理時間。

如果 addSchemaInfo 為 true ，則此方法會在 PSVI) (架構後驗證資訊集填入 XML 樹狀結構。

在 XML 樹狀結構中填入 PSVI 有兩個層面。

首先，注釋會新增至樹狀結構中的所有節點，讓您現在可以在樹狀結構中的元素或屬性上呼叫 GetSchemaInfo 。

其次，XSD 中定義的預設元素和屬性會新增至 XML 樹狀結構。藉由呼叫其中 GetSchemaInfo 一種方法，您可以判斷是否已從 XSD 新增特定元素或屬性作為預設專案或屬性。

如果您針對 validationEventHandler 傳遞 null ，則此方法會在驗證錯誤時引發例外狀況。驗證警告不會引發例外狀況。

若要驗證子樹狀結構，請使用的 XmlSchemaObject 實例。您可以透過各種方式取得這個實例。簡單方式如下：

驗證檔是否符合架構。
藉由呼叫 Validate 擴充方法，將後架構驗證資訊集新增 (PSVI) 。
GetSchemaInfo呼叫擴充方法以擷取實作 IXmlSchemaInfo 的物件。您可以從擷取的物件取得 XmlSchemaObject 。
- 如果您取得 XmlSchemaObject 的 XElement ，則類型會是 XmlSchemaElement 。
- 如果您取得 XmlSchemaObject 的 XAttribute ，則類型會是 XmlSchemaAttribute 。

擁有的 XmlSchemaObject 實例之後，您可以使用這個方法來驗證子樹狀結構。

適用於

共用方式為

Extensions.Validate 方法

定義

多載

備註

Validate(XDocument, XmlSchemaSet, ValidationEventHandler)

參數

例外狀況

範例

備註

適用於

Validate(XAttribute, XmlSchemaObject, XmlSchemaSet, ValidationEventHandler)

參數

例外狀況

範例

備註

適用於

Validate(XDocument, XmlSchemaSet, ValidationEventHandler, Boolean)

參數

例外狀況

範例

備註

適用於

Validate(XElement, XmlSchemaObject, XmlSchemaSet, ValidationEventHandler)

參數

例外狀況

範例

備註

適用於

Validate(XAttribute, XmlSchemaObject, XmlSchemaSet, ValidationEventHandler, Boolean)

參數

例外狀況

範例

備註

適用於

Validate(XElement, XmlSchemaObject, XmlSchemaSet, ValidationEventHandler, Boolean)

參數

例外狀況

範例

備註

適用於

其他資源