DynamicMethod.ReturnTypeCustomAttributes 屬性

定義

命名空間:

System.Reflection.Emit

組件:

System.Reflection.Emit.Lightweight.dll

來源:

DynamicMethod.cs

取得動態方法之傳回類型的自訂屬性。

public:
 virtual property System::Reflection::ICustomAttributeProvider ^ ReturnTypeCustomAttributes { System::Reflection::ICustomAttributeProvider ^ get(); };

public override System.Reflection.ICustomAttributeProvider ReturnTypeCustomAttributes { get; }

member this.ReturnTypeCustomAttributes : System.Reflection.ICustomAttributeProvider

Public Overrides ReadOnly Property ReturnTypeCustomAttributes As ICustomAttributeProvider

屬性值

ICustomAttributeProvider

ICustomAttributeProvider 表示動態方法之傳回類型的自訂屬性。

範例

下列程式代碼範例示範如何顯示動態方法之傳回型別的自定義屬性。 此程式代碼範例是針對 類別提供的較大範例的 DynamicMethod 一部分。

// ReturnTypeCustomAttributes returns an ICustomeAttributeProvider
// that can be used to enumerate the custom attributes of the
// return value. At present, there is no way to set such custom
// attributes, so the list is empty.
if (hello->ReturnType == Void::typeid)
{
    Console::WriteLine("The method has no return type.");
}
else
{
    ICustomAttributeProvider^ caProvider = hello->ReturnTypeCustomAttributes;
    array<Object^>^ returnAttributes = caProvider->GetCustomAttributes(true);
    if (returnAttributes->Length == 0)
    {
        Console::WriteLine("\r\nThe return type has no custom attributes.");
    }
    else
    {
        Console::WriteLine("\r\nThe return type has the following custom attributes:");
        for each (Object^ attr in returnAttributes)
        {
            Console::WriteLine("\t{0}", attr->ToString());
        }
    }
}

// ReturnTypeCustomAttributes returns an ICustomeAttributeProvider
// that can be used to enumerate the custom attributes of the
// return value. At present, there is no way to set such custom
// attributes, so the list is empty.
if (hello.ReturnType == typeof(void))
{
    Console.WriteLine("The method has no return type.");
}
else
{
    ICustomAttributeProvider caProvider = hello.ReturnTypeCustomAttributes;
    object[] returnAttributes = caProvider.GetCustomAttributes(true);
    if (returnAttributes.Length == 0)
    {
        Console.WriteLine("\r\nThe return type has no custom attributes.");
    }
    else
    {
        Console.WriteLine("\r\nThe return type has the following custom attributes:");
        foreach( object attr in returnAttributes )
        {
            Console.WriteLine("\t{0}", attr.ToString());
        }
    }
}

' ReturnTypeCustomAttributes returns an ICustomeAttributeProvider
' that can be used to enumerate the custom attributes of the
' return value. At present, there is no way to set such custom
' attributes, so the list is empty.
If hello.ReturnType Is GetType(System.Void) Then
    Console.WriteLine("The method has no return type.")
Else
    Dim caProvider As ICustomAttributeProvider = _
        hello.ReturnTypeCustomAttributes
    Dim returnAttributes() As Object = _
        caProvider.GetCustomAttributes(True)
    If returnAttributes.Length = 0 Then
        Console.WriteLine(vbCrLf _
            & "The return type has no custom attributes.")
    Else
        Console.WriteLine(vbCrLf _
            & "The return type has the following custom attributes:")
        For Each attr As Object In returnAttributes
            Console.WriteLine(vbTab & attr.ToString())
        Next attr
    End If
End If

備註

動態方法的傳回型別不支援自定義屬性，因此方法傳 GetCustomAttributes 回的自定義屬性陣列一律是空的。

另請參閱

• ReturnType