IDataContractSurrogate.GetReferencedTypeOnImport Method

Definition

Namespace:

System.Runtime.Serialization

Assembly:

System.Runtime.Serialization.dll

During schema import, returns the type referenced by the schema.

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

Parameters

typeName

String

The name of the type in schema.

typeNamespace

String

The namespace of the type in schema.

customData

Object

The object that represents the annotation inserted into the XML schema definition, which is data that can be used for finding the referenced type.

Returns

Type

The Type to use for the referenced type.

Examples

The following example shows an implementation of the GetReferencedTypeOnImport method.

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

Remarks

Null should be returned if a CLR type does not exist for representing the schema type. This will cause a new type to be generated during schema import.