Type.GetInterface 方法

定义

命名空间:

System

程序集:

System.Runtime.dll

获取由当前 Type 实现或继承的特定接口。

重载

GetInterface(String)	搜索具有指定名称的接口。
GetInterface(String, Boolean)	当在派生类中重写时，搜索指定的接口，指定是否要对接口名称执行不区分大小写的搜索。

GetInterface(String)

Source:

Type.cs

搜索具有指定名称的接口。

public:
 Type ^ GetInterface(System::String ^ name);

public Type? GetInterface (string name);

member this.GetInterface : string -> Type

Public Function GetInterface (name As String) As Type

参数

name

String

包含要获取的接口名称的字符串。 对于泛型接口，这是重整名称。

返回

Type

表示具有指定名称且由当前的 Type 实现或继承的接口的对象（如果找到的话）；否则为 null。

例外

ArgumentNullException

name 为 null。

AmbiguousMatchException

当前 Type 表示实现具有不同类型参数的相同泛型接口的类型。

示例

下面的代码示例使用 GetInterface(String) 方法在 类IDeserializationCallback中Hashtable搜索 接口，并列出 接口的方法。

该代码示例还演示了 GetInterface(String, Boolean) 方法重载和 GetInterfaceMap 方法。

int main()
{
   Hashtable^ hashtableObj = gcnew Hashtable;
   Type^ objType = hashtableObj->GetType();
   array<MemberInfo^>^arrayMemberInfo;
   array<MethodInfo^>^arrayMethodInfo;
   try
   {
      // Get the methods implemented in 'IDeserializationCallback' interface.
      arrayMethodInfo = objType->GetInterface( "IDeserializationCallback" )->GetMethods();
      Console::WriteLine( "\nMethods of 'IDeserializationCallback' Interface :" );
      for ( int index = 0; index < arrayMethodInfo->Length; index++ )
         Console::WriteLine( arrayMethodInfo[ index ] );
      
      // Get FullName for interface by using Ignore case search.
      Console::WriteLine( "\nMethods of 'IEnumerable' Interface" );
      arrayMethodInfo = objType->GetInterface( "ienumerable", true )->GetMethods();
      for ( int index = 0; index < arrayMethodInfo->Length; index++ )
         Console::WriteLine( arrayMethodInfo[ index ] );
      
      //Get the Interface methods for 'IDictionary*' interface
      InterfaceMapping interfaceMappingObj;
      interfaceMappingObj = objType->GetInterfaceMap( IDictionary::typeid );
      arrayMemberInfo = interfaceMappingObj.InterfaceMethods;
      Console::WriteLine( "\nHashtable class Implements the following IDictionary Interface methods :" );
      for ( int index = 0; index < arrayMemberInfo->Length; index++ )
         Console::WriteLine( arrayMemberInfo[ index ] );
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( "Exception : {0}", e );
   }
}

public static void Main()
{
    Hashtable hashtableObj = new Hashtable();
    Type objType = hashtableObj.GetType();
    MethodInfo[] arrayMethodInfo;
    MemberInfo[] arrayMemberInfo;
    try
    {
        // Get the methods implemented in 'IDeserializationCallback' interface.
        arrayMethodInfo =objType.GetInterface("IDeserializationCallback").GetMethods();
        Console.WriteLine ("\nMethods of 'IDeserializationCallback' Interface :");
        foreach(MethodInfo methodInfo in arrayMethodInfo)
            Console.WriteLine (methodInfo);

        // Get FullName for interface by using Ignore case search.
        Console.WriteLine ("\nMethods of 'IEnumerable' Interface");
        arrayMethodInfo = objType.GetInterface("ienumerable",true).GetMethods();
        foreach(MethodInfo methodInfo in arrayMethodInfo)
           Console.WriteLine (methodInfo);

        //Get the Interface methods for 'IDictionary' interface
        InterfaceMapping interfaceMappingOb = objType.GetInterfaceMap(typeof(IDictionary));
        arrayMemberInfo = interfaceMappingObj.InterfaceMethods;
        Console.WriteLine ("\nHashtable class Implements the following IDictionary Interface methods :");
        foreach(MemberInfo memberInfo in arrayMemberInfo)
           Console.WriteLine (memberInfo);
    }
    catch (Exception e)
    {
        Console.WriteLine ("Exception : " + e.ToString());
    }
}

let hashtableObj = Hashtable()
let objType = hashtableObj.GetType()
try
    // Get the methods implemented in 'IDeserializationCallback' interface.
    let arrayMethodInfo = objType.GetInterface("IDeserializationCallback").GetMethods()
    printfn "\nMethods of 'IDeserializationCallback' Interface :"
    for methodInfo in arrayMethodInfo do
        printfn $"{methodInfo}"

    // Get FullName for interface by using Ignore case search.
    printfn "\nMethods of 'IEnumerable' Interface"
    let arrayMethodInfo = objType.GetInterface("ienumerable",true).GetMethods()
    for methodInfo in arrayMethodInfo do
        printfn $"{methodInfo}"

    //Get the Interface methods for 'IDictionary' interface
    let interfaceMappingObj = objType.GetInterfaceMap typeof<IDictionary>
    let arrayMemberInfo = interfaceMappingObj.InterfaceMethods
    printfn "\nHashtable class Implements the following IDictionary Interface methods :"
    for memberInfo in arrayMemberInfo do
        printfn $"{memberInfo}"
with e ->
    printfn $"Exception : {e}"

   Public Shared Sub Main()
      Dim hashtableObj As New Hashtable()
      Dim objType As Type = hashtableObj.GetType()
      Dim arrayMemberInfo() As MemberInfo
      Dim arrayMethodInfo() As MethodInfo
      Try
         ' Get the methods implemented in 'IDeserializationCallback' interface.
         arrayMethodInfo = objType.GetInterface("IDeserializationCallback").GetMethods()
         Console.WriteLine(ControlChars.Cr + "Methods of 'IDeserializationCallback' Interface :")
         Dim index As Integer
         For index = 0 To arrayMethodInfo.Length - 1
            Console.WriteLine(arrayMethodInfo(index).ToString())
         Next index
         ' Get FullName for interface by using Ignore case search.
         Console.WriteLine(ControlChars.Cr + "Methods of 'IEnumerable' Interface")
         arrayMethodInfo = objType.GetInterface("ienumerable", True).GetMethods()
         For index = 0 To arrayMethodInfo.Length - 1
            Console.WriteLine(arrayMethodInfo(index).ToString())
         Next index
         'Get the Interface methods for 'IDictionary' interface
         Dim interfaceMappingObj As InterfaceMapping
         interfaceMappingObj = objType.GetInterfaceMap(GetType(IDictionary))
         arrayMemberInfo = interfaceMappingObj.InterfaceMethods
         Console.WriteLine(ControlChars.Cr + "Hashtable class Implements the following IDictionary Interface methods :")
         For index = 0 To arrayMemberInfo.Length - 1
            Console.WriteLine(arrayMemberInfo(index).ToString())
         Next index
      Catch e As Exception
         Console.WriteLine(("Exception : " + e.ToString()))
      End Try
   End Sub
End Class

注解

搜索区分 name 大小写。

如果当前 Type 表示构造的泛型类型，则此方法返回 Type ，并将类型参数替换为相应的类型参数。

如果当前 Type 表示泛型类型或泛型方法定义中的类型参数，则此方法将搜索接口约束以及从类或接口约束继承的任何接口。

注意

对于泛型接口， name 参数是整型名称，以严重重音 (') 和类型参数数结尾。 这适用于泛型接口定义和构造的泛型接口。 例如，若要IExample<T>IExample(Of T)在 Visual Basic) 或 IExample<string> Visual Basic) 中查找 (IExample(Of String) (，请搜索 "IExample`1"。

另请参阅

• String
• GetInterfaces()
• FindInterfaces(TypeFilter, Object)

GetInterface(String, Boolean)

Source:

Type.cs

当在派生类中重写时，搜索指定的接口，指定是否要对接口名称执行不区分大小写的搜索。

public:
 abstract Type ^ GetInterface(System::String ^ name, bool ignoreCase);

public abstract Type? GetInterface (string name, bool ignoreCase);

abstract member GetInterface : string * bool -> Type

Public MustOverride Function GetInterface (name As String, ignoreCase As Boolean) As Type

参数

name

String

包含要获取的接口名称的字符串。 对于泛型接口，这是重整名称。

ignoreCase

Boolean

true 表示对于用来指定简单接口名称的 name 部分（该部分指定命名空间大小写必须正确）忽略其大小写。

或

false 表示对 name 的所有部分执行区分大小写的搜索。

返回

Type

表示具有指定名称且由当前的 Type 实现或继承的接口的对象（如果找到的话）；否则为 null。

例外

ArgumentNullException

name 为 null。

AmbiguousMatchException

当前 Type 表示实现具有不同类型参数的相同泛型接口的类型。

示例

下面的代码示例使用 GetInterface(String, Boolean) 方法对 接口的 Hashtable 类 IEnumerable 执行不区分大小写的搜索。

该代码示例还演示了 GetInterface(String) 方法重载和 GetInterfaceMap 方法。

int main()
{
   Hashtable^ hashtableObj = gcnew Hashtable;
   Type^ objType = hashtableObj->GetType();
   array<MemberInfo^>^arrayMemberInfo;
   array<MethodInfo^>^arrayMethodInfo;
   try
   {
      // Get the methods implemented in 'IDeserializationCallback' interface.
      arrayMethodInfo = objType->GetInterface( "IDeserializationCallback" )->GetMethods();
      Console::WriteLine( "\nMethods of 'IDeserializationCallback' Interface :" );
      for ( int index = 0; index < arrayMethodInfo->Length; index++ )
         Console::WriteLine( arrayMethodInfo[ index ] );
      
      // Get FullName for interface by using Ignore case search.
      Console::WriteLine( "\nMethods of 'IEnumerable' Interface" );
      arrayMethodInfo = objType->GetInterface( "ienumerable", true )->GetMethods();
      for ( int index = 0; index < arrayMethodInfo->Length; index++ )
         Console::WriteLine( arrayMethodInfo[ index ] );
      
      //Get the Interface methods for 'IDictionary*' interface
      InterfaceMapping interfaceMappingObj;
      interfaceMappingObj = objType->GetInterfaceMap( IDictionary::typeid );
      arrayMemberInfo = interfaceMappingObj.InterfaceMethods;
      Console::WriteLine( "\nHashtable class Implements the following IDictionary Interface methods :" );
      for ( int index = 0; index < arrayMemberInfo->Length; index++ )
         Console::WriteLine( arrayMemberInfo[ index ] );
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( "Exception : {0}", e );
   }
}

public static void Main()
{
    Hashtable hashtableObj = new Hashtable();
    Type objType = hashtableObj.GetType();
    MethodInfo[] arrayMethodInfo;
    MemberInfo[] arrayMemberInfo;
    try
    {
        // Get the methods implemented in 'IDeserializationCallback' interface.
        arrayMethodInfo =objType.GetInterface("IDeserializationCallback").GetMethods();
        Console.WriteLine ("\nMethods of 'IDeserializationCallback' Interface :");
        foreach(MethodInfo methodInfo in arrayMethodInfo)
            Console.WriteLine (methodInfo);

        // Get FullName for interface by using Ignore case search.
        Console.WriteLine ("\nMethods of 'IEnumerable' Interface");
        arrayMethodInfo = objType.GetInterface("ienumerable",true).GetMethods();
        foreach(MethodInfo methodInfo in arrayMethodInfo)
           Console.WriteLine (methodInfo);

        //Get the Interface methods for 'IDictionary' interface
        InterfaceMapping interfaceMappingOb = objType.GetInterfaceMap(typeof(IDictionary));
        arrayMemberInfo = interfaceMappingObj.InterfaceMethods;
        Console.WriteLine ("\nHashtable class Implements the following IDictionary Interface methods :");
        foreach(MemberInfo memberInfo in arrayMemberInfo)
           Console.WriteLine (memberInfo);
    }
    catch (Exception e)
    {
        Console.WriteLine ("Exception : " + e.ToString());
    }
}

let hashtableObj = Hashtable()
let objType = hashtableObj.GetType()
try
    // Get the methods implemented in 'IDeserializationCallback' interface.
    let arrayMethodInfo = objType.GetInterface("IDeserializationCallback").GetMethods()
    printfn "\nMethods of 'IDeserializationCallback' Interface :"
    for methodInfo in arrayMethodInfo do
        printfn $"{methodInfo}"

    // Get FullName for interface by using Ignore case search.
    printfn "\nMethods of 'IEnumerable' Interface"
    let arrayMethodInfo = objType.GetInterface("ienumerable",true).GetMethods()
    for methodInfo in arrayMethodInfo do
        printfn $"{methodInfo}"

    //Get the Interface methods for 'IDictionary' interface
    let interfaceMappingObj = objType.GetInterfaceMap typeof<IDictionary>
    let arrayMemberInfo = interfaceMappingObj.InterfaceMethods
    printfn "\nHashtable class Implements the following IDictionary Interface methods :"
    for memberInfo in arrayMemberInfo do
        printfn $"{memberInfo}"
with e ->
    printfn $"Exception : {e}"

   Public Shared Sub Main()
      Dim hashtableObj As New Hashtable()
      Dim objType As Type = hashtableObj.GetType()
      Dim arrayMemberInfo() As MemberInfo
      Dim arrayMethodInfo() As MethodInfo
      Try
         ' Get the methods implemented in 'IDeserializationCallback' interface.
         arrayMethodInfo = objType.GetInterface("IDeserializationCallback").GetMethods()
         Console.WriteLine(ControlChars.Cr + "Methods of 'IDeserializationCallback' Interface :")
         Dim index As Integer
         For index = 0 To arrayMethodInfo.Length - 1
            Console.WriteLine(arrayMethodInfo(index).ToString())
         Next index
         ' Get FullName for interface by using Ignore case search.
         Console.WriteLine(ControlChars.Cr + "Methods of 'IEnumerable' Interface")
         arrayMethodInfo = objType.GetInterface("ienumerable", True).GetMethods()
         For index = 0 To arrayMethodInfo.Length - 1
            Console.WriteLine(arrayMethodInfo(index).ToString())
         Next index
         'Get the Interface methods for 'IDictionary' interface
         Dim interfaceMappingObj As InterfaceMapping
         interfaceMappingObj = objType.GetInterfaceMap(GetType(IDictionary))
         arrayMemberInfo = interfaceMappingObj.InterfaceMethods
         Console.WriteLine(ControlChars.Cr + "Hashtable class Implements the following IDictionary Interface methods :")
         For index = 0 To arrayMemberInfo.Length - 1
            Console.WriteLine(arrayMemberInfo(index).ToString())
         Next index
      Catch e As Exception
         Console.WriteLine(("Exception : " + e.ToString()))
      End Try
   End Sub
End Class

注解

参数 ignoreCase 仅适用于简单接口名称，不适用于 命名空间。 指定命名空间的 name 部分必须具有正确的大小写，否则将找不到接口。 例如，字符串“System.icomparable”查找 IComparable 接口，但字符串“system.icomparable”则不会。

如果当前 Type 表示构造的泛型类型，则此方法返回 Type ，并将类型参数替换为相应的类型参数。

如果当前 Type 表示泛型类型或泛型方法定义中的类型参数，则此方法将搜索接口约束以及从类或接口约束继承的任何接口。

注意

对于泛型接口， name 参数是整型名称，以严重重音 (') 和类型参数数结尾。 这适用于泛型接口定义和构造的泛型接口。 例如，若要IExample<T>IExample(Of T)在 Visual Basic) 或 IExample<string> Visual Basic) 中查找 (IExample(Of String) (，请搜索 "IExample`1"。

另请参阅

• String
• GetInterfaces()
• FindInterfaces(TypeFilter, Object)