IDataContractSurrogate.GetReferencedTypeOnImport 方法

定义

命名空间:

System.Runtime.Serialization

程序集:

System.Runtime.Serialization.dll

在架构导入期间，返回由该架构引用的类型。

public:
 Type ^ GetReferencedTypeOnImport(System::String ^ typeName, System::String ^ typeNamespace, System::Object ^ customData);

public Type GetReferencedTypeOnImport (string typeName, string typeNamespace, object customData);

abstract member GetReferencedTypeOnImport : string * string * obj -> Type

Public Function GetReferencedTypeOnImport (typeName As String, typeNamespace As String, customData As Object) As Type

参数

typeName

String

架构中类型的名称。

typeNamespace

String

架构中类型的命名空间。

customData

Object

表示插入到 XML 架构定义中的批注的对象，批注是可用于查找引用的类型的数据。

返回

Type

要用于所引用的类型的 Type。

示例

下面的示例演示 GetReferencedTypeOnImport 方法的实现。

public Type GetReferencedTypeOnImport(string typeName,
    string typeNamespace, object customData)
{
    Console.WriteLine("GetReferencedTypeOnImport invoked");
    // This method is called on schema import.
    // If a PersonSurrogated data contract is
    // in the specified namespace, do not create a new type for it
    // because there is already an existing type, "Person".
    Console.WriteLine( "\t Type Name: {0}", typeName);

    if (typeName.Equals("PersonSurrogated") )
    {
        Console.WriteLine("Returning Person");
        return typeof(Person);
    }
    return null;
}

Public Function GetReferencedTypeOnImport(ByVal typeName As String, _
    ByVal typeNamespace As String, ByVal customData As Object) As Type _
    Implements IDataContractSurrogate.GetReferencedTypeOnImport
    Console.WriteLine("GetReferencedTypeOnImport invoked")
    ' This method is called on schema import.
    ' If a PersonSurrogated data contract is 
    ' in the specified namespace, do not create a new type for it 
    ' because there is already an existing type, "Person".
    Console.WriteLine(vbTab & "Type Name: {0}", typeName)

    'If typeNamespace.Equals("http://schemas.datacontract.org/2004/07/DCSurrogateSample") Then
    If typeName.Equals("PersonSurrogated") Then
        Console.WriteLine("Returning Person")
        Return GetType(Person)
    End If
    'End If
    Return Nothing

End Function

注解

如果不存在表示架构类型的 CLR 类型，则应返回 Null。 这会导致在架构导入过程中生成一个新类型。