XmlValidatingReader.ValidationType プロパティ
定義
重要
一部の情報は、リリース前に大きく変更される可能性があるプレリリースされた製品に関するものです。 Microsoft は、ここに記載されている情報について、明示または黙示を問わず、一切保証しません。
実行する検証のタイプを示す値を取得または設定します。
public:
property System::Xml::ValidationType ValidationType { System::Xml::ValidationType get(); void set(System::Xml::ValidationType value); };public System.Xml.ValidationType ValidationType { get; set; }member this.ValidationType : System.Xml.ValidationType with get, setPublic Property ValidationType As ValidationTypeプロパティ値
ValidationType 値のいずれか 1 つ。 このプロパティを設定しないと、既定により ValidationType.Auto が設定されます。
例外
Read を呼び出した後、このプロパティを設定。
例
次の例では、2 つのファイルを検証します。
#using <System.Xml.dll>
using namespace System;
using namespace System::IO;
using namespace System::Xml;
using namespace System::Xml::Schema;
public ref class Sample
{
private:
XmlTextReader^ txtreader;
XmlValidatingReader^ reader;
Boolean m_success;
public:
Sample()
{
txtreader = nullptr;
reader = nullptr;
m_success = true;
String^ doc1 = "notValid.xml";
String^ doc2 = "cdDTD.xml";
String^ doc3 = "book1.xml";
//Parse the files and validate when requested.
Validate( doc1, ValidationType::XDR ); //Validation should fail.
Validate( doc2, ValidationType::DTD ); //Validation should fail.
Validate( doc3, ValidationType::None ); //No validation performed.
}
private:
void Validate( String^ filename, ValidationType vt )
{
try
{
//Implement the readers. Set the ValidationType.
txtreader = gcnew XmlTextReader( filename );
reader = gcnew XmlValidatingReader( txtreader );
reader->ValidationType = vt;
//If the reader is set to validate, set the event handler.
if ( vt == ValidationType::None )
Console::WriteLine( "\nParsing XML file {0}", filename );
else
{
Console::WriteLine( "\nValidating XML file {0}", filename );
m_success = true;
//Set the validation event handler.
reader->ValidationEventHandler += gcnew ValidationEventHandler( this, &Sample::ValidationCallBack );
}
// Read XML data
while ( reader->Read() )
{}
if ( vt == ValidationType::None )
Console::WriteLine( "Finished parsing file." );
else
Console::WriteLine( "Validation finished. Validation {0}", m_success ? (String^)"successful" : "failed" );
}
finally
{
//Close the reader.
if ( reader != nullptr )
reader->Close();
}
}
//Display the validation errors.
void ValidationCallBack( Object^ /*sender*/, ValidationEventArgs^ args )
{
m_success = false;
Console::Write( "\r\n\tValidation error: {0}", args->Message );
}
};
int main()
{
gcnew Sample;
}
using System;
using System.IO;
using System.Xml;
using System.Xml.Schema;
public class Sample
{
private const String doc1 = "notValid.xml";
private const String doc2 = "cdDTD.xml";
private const String doc3 = "book1.xml";
private XmlTextReader txtreader = null;
private XmlValidatingReader reader = null;
private Boolean m_success = true;
public Sample ()
{
//Parse the files and validate when requested.
Validate(doc1, ValidationType.XDR); //Validation should fail.
Validate(doc2, ValidationType.DTD); //Validation should fail.
Validate(doc3, ValidationType.None); //No validation performed.
}
public static void Main ()
{
Sample validation = new Sample();
}
private void Validate(String filename, ValidationType vt)
{
try
{
//Implement the readers. Set the ValidationType.
txtreader = new XmlTextReader(filename);
reader = new XmlValidatingReader(txtreader);
reader.ValidationType = vt;
//If the reader is set to validate, set the event handler.
if (vt==ValidationType.None)
{
Console.WriteLine("\nParsing XML file " + filename.ToString());
}
else
{
Console.WriteLine("\nValidating XML file " + filename.ToString());
m_success = true;
//Set the validation event handler.
reader.ValidationEventHandler += new ValidationEventHandler (ValidationCallBack);
}
// Read XML data
while (reader.Read()){}
if (vt==ValidationType.None)
Console.WriteLine("Finished parsing file.");
else
Console.WriteLine ("Validation finished. Validation {0}", (m_success==true ? "successful" : "failed"));
}
finally
{
//Close the reader.
if (reader != null)
reader.Close();
}
}
//Display the validation errors.
private void ValidationCallBack (object sender, ValidationEventArgs args)
{
m_success = false;
Console.Write("\r\n\tValidation error: " + args.Message);
}
}
Imports System.IO
Imports System.Xml
Imports System.Xml.Schema
Public Class Sample
Private doc1 As String = "notValid.xml"
Private doc2 As String = "cdDTD.xml"
Private doc3 As String = "book1.xml"
Private txtreader As XmlTextReader = Nothing
Private reader As XmlValidatingReader = Nothing
Private m_success As Boolean = True
Public Sub New()
'Parse the files and validate when requested.
Validate(doc1, ValidationType.XDR) 'Validation should fail.
Validate(doc2, ValidationType.DTD) 'Validation should fail.
Validate(doc3, ValidationType.None) 'No validation performed.
End Sub
Public Shared Sub Main()
Dim validation As New Sample()
End Sub
Private Sub Validate(filename As String, vt As ValidationType)
Try
'Implement the readers. Set the ValidationType.
txtreader = New XmlTextReader(filename)
reader = New XmlValidatingReader(txtreader)
reader.ValidationType = vt
'If the reader is set to validate, set the event handler.
If vt = ValidationType.None Then
Console.WriteLine(ControlChars.Cr & "Parsing XML file " & filename.ToString())
Else
Console.WriteLine(ControlChars.Cr & "Validating XML file " & filename.ToString())
m_success = True
'Set the validation event handler.
AddHandler reader.ValidationEventHandler, AddressOf ValidationCallBack
End If
' Read XML data
While reader.Read()
End While
If vt = ValidationType.None Then
Console.WriteLine("Finished parsing file.")
Else
Console.WriteLine("Validation finished. Validation {0}", IIf(m_success, "successful", "failed"))
End If
Finally
'Close the reader.
If Not (reader Is Nothing) Then
reader.Close()
End If
End Try
End Sub
'Display the validation errors.
Private Sub ValidationCallBack(sender As Object, args As ValidationEventArgs)
m_success = False
Console.Write(ControlChars.CrLf & ControlChars.Tab & "Validation error: " & args.Message)
End Sub
End Class
このサンプルでは、次の 4 つの入力ファイルを使用します。
notValid.xml ("x-schema:" プレフィックスは、リーダーのXML-Data縮小 (XDR) スキーマを識別します)。
<?xml version='1.0'?>
<bookstore xmlns="x-schema:schema1.xdr">
<book genre="novel" style="hardcover">
<title>The Handmaid's Tale</title>
<author>
<first-name>Margaret</first-name>
<last-name>Atwood</last-name>
</author>
<price>19.95</price>
</book>
<book genre="novel" style="other">
<title>The Poisonwood Bible</title>
<author>
<first-name>Barbara</first-name>
<last-name>Kingsolver</last-name>
</author>
<price>11.99</price>
</book>
</bookstore>
schema1.xdr
<?xml version="1.0"?>
<Schema xmlns="urn:schemas-microsoft-com:xml-data"
xmlns:dt="urn:schemas-microsoft-com:datatypes">
<ElementType name="first-name" content="textOnly"/>
<ElementType name="last-name" content="textOnly"/>
<ElementType name="name" content="textOnly"/>
<ElementType name="price" content="textOnly" dt:type="fixed.14.4"/>
<ElementType name="author" content="eltOnly" order="one">
<group order="seq">
<element type="name"/>
</group>
<group order="seq">
<element type="first-name"/>
<element type="last-name"/>
</group>
</ElementType>
<ElementType name="title" content="textOnly"/>
<AttributeType name="genre" dt:type="string"/>
<AttributeType name="style" dt:type="enumeration"
dt:values="paperback hardcover"/>
<ElementType name="book" content="eltOnly">
<attribute type="genre" required="yes"/>
<attribute type="style" required="yes"/>
<element type="title"/>
<element type="author"/>
<element type="price"/>
</ElementType>
<ElementType name="bookstore" content="eltOnly">
<element type="book"/>
</ElementType>
</Schema>
cdDTD.xml
<!--XML file using a DTD-->
<!DOCTYPE bookstore [
<!ELEMENT bookstore (cd)*>
<!ELEMENT cd (title,artist,price)>
<!ATTLIST cd genre CDATA #REQUIRED>
<!ELEMENT title (#PCDATA)>
<!ELEMENT artist (#PCDATA)>
<!ELEMENT price (#PCDATA)>]>
<bookstore>
<cd genre="alternative" ISBN="2-3631-4">
<title>Americana</title>
<artist>Offspring</artist>
<price>16.95</price>
</cd>
</bookstore>
book1.xml
<?xml version='1.0' ?>
<!DOCTYPE book [<!ENTITY h 'hardcover'>]>
<book>
<title>Pride And Prejudice</title>
<misc>&h;</misc>
</book>
注釈
注意
このXmlValidatingReaderクラスは、.NET Framework 2.0 では廃止されています。 クラスとメソッドを使用してXmlReaderSettings、検証XmlReaderインスタンスをCreate作成できます。 詳細については、XmlReader のリファレンス ページの「解説」を参照してください。
このプロパティは、最初の呼び出しの前に設定する Read必要があります。 このプロパティを ValidationType.None に設定すると、非検証リーダーが作成されます。
検証に外部ドキュメント型定義 (DTD) またはスキーマが必要な場合は、その XmlResolver 定義が使用されます。