Type.GetInterfaces 方法

定義

命名空間:

System

組件:

System.Runtime.dll

組件:

netstandard.dll

組件:

mscorlib.dll

在衍生類別中覆寫時，取得由目前 Type 所實作或繼承的所有介面。

public:
 abstract cli::array <Type ^> ^ GetInterfaces();

public abstract Type[] GetInterfaces ();

abstract member GetInterfaces : unit -> Type[]

Public MustOverride Function GetInterfaces () As Type()

傳回

Type[]

Type 物件的陣列，代表目前 Type所實作或繼承的所有介面。

-或- Type 類型的空陣列 (如果目前 Type 未實作或繼承介面)。

實作

GetInterfaces()

例外狀況

TargetInvocationException

靜態初始設定式已叫用並擲回了例外狀況。

範例

下列範例會取得指定類別的型別，並顯示該型別所實行或繼承的所有介面。 若要編譯 Visual Basic 範例，請使用下列編譯器命令：

vbc type_getinterfaces1.vb /r:System.Web.dll /r:System.dll

using namespace System;
using namespace System::Collections::Generic;

void main()
{
    Console::WriteLine("\r\nInterfaces implemented by Dictionary<int, String^>:\r\n");
     
    for each (Type^ tinterface in Dictionary<int, String^>::typeid->GetInterfaces())
    {
        Console::WriteLine(tinterface->ToString());
    }

    //Console::ReadLine()      // Uncomment this line for Visual Studio. 
}

/* This example produces output similar to the following:

Interfaces implemented by Dictionary<int, String^>:

System.Collections.Generic.IDictionary`2[System.Int32,System.String]
System.Collections.Generic.ICollection`1[System.Collections.Generic.KeyValuePair`2[System.Int32,System.String]]
System.Collections.Generic.IEnumerable`1[System.Collections.Generic.KeyValuePair`2[System.Int32,System.String]]
System.Collection.IEnumerable
System.Collection.IDictionary
System.Collection.ICollection
System.Runtime.Serialization.ISerializable
System.Runtime.Serialization.IDeserializationCallback
 */

using System;
using System.Collections.Generic;

public class Example
{
    static void Main()
    {
        Console.WriteLine("\r\nInterfaces implemented by Dictionary<int, string>:\r\n");

        foreach (Type tinterface in typeof(Dictionary<int, string>).GetInterfaces())
        {
            Console.WriteLine(tinterface.ToString());
        }

        //Console.ReadLine()      // Uncomment this line for Visual Studio.
    }
}

/* This example produces output similar to the following:

Interfaces implemented by Dictionary<int, string>:

System.Collections.Generic.IDictionary`2[System.Int32,System.String]
System.Collections.Generic.ICollection`1[System.Collections.Generic.KeyValuePair`2[System.Int32,System.String]]
System.Collections.Generic.IEnumerable`1[System.Collections.Generic.KeyValuePair`2[System.Int32,System.String]]
System.Collection.IEnumerable
System.Collection.IDictionary
System.Collection.ICollection
System.Runtime.Serialization.ISerializable
System.Runtime.Serialization.IDeserializationCallback
 */

Imports System.Collections.Generic

Public Class Example

    Shared Sub Main()

        Console.WriteLine(vbCrLf & _
            "Interfaces implemented by Dictionary(Of Integer, String):" & vbCrLf)
        
        For Each tinterface As Type In GetType(Dictionary(Of Integer, String)).GetInterfaces()

            Console.WriteLine(tinterface.ToString())

        Next

        'Console.ReadLine()      ' Uncomment this line for Visual Studio. 
    End Sub
End Class

' This example produces output similar to the following:
'
'Interfaces implemented by Dictionary(Of Integer, String):
'System.Collections.Generic.IDictionary`2[System.Int32,System.String]
'System.Collections.Generic.ICollection`1[System.Collections.Generic.KeyValuePair`2[System.Int32,System.String]]
'System.Collections.Generic.IEnumerable`1[System.Collections.Generic.KeyValuePair`2[System.Int32,System.String]]
'System.Collection.IEnumerable
'System.Collection.IDictionary
'System.Collection.ICollection
'System.Runtime.Serialization.ISerializable
'System.Runtime.Serialization.IDeserializationCallback

備註

GetInterfaces方法不會以特定順序傳回介面，例如字母順序或宣告順序。 您的程式碼不得相依于傳回介面的順序，因為該順序會有所不同。

如果目前的 Type 代表結構化泛型型別，這個方法會傳回 Type 類型參數取代為適當類型引數的物件。

如果目前 Type 表示泛型型別或泛型方法定義中的類型參數，這個方法會搜尋介面條件約束，以及繼承自類別或介面條件約束的任何介面。

另請參閱

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