MissingFieldException.Message 屬性

定義

命名空間:

System

組件:

System.Runtime.dll

組件:

mscorlib.dll

組件:

netstandard.dll

取得顯示遺漏欄位的簽章、類別名稱和欄位名稱的文字字串。 這個屬性是唯讀的。

public:
 virtual property System::String ^ Message { System::String ^ get(); };

public override string Message { get; }

member this.Message : string

Public Overrides ReadOnly Property Message As String

屬性值

String

錯誤訊息字串。

範例

下列範例示範 Message 屬性。 此程式碼範例是提供給 類別之較大範例的 MissingFieldException 一部分。

try
{
    // Attempt to access a static AField field defined in the App class.
    // However, because the App class does not define this field,
    // a MissingFieldException is thrown.
    App::typeid->InvokeMember("AField", BindingFlags::Static |
        BindingFlags::SetField, nullptr, nullptr, gcnew array<Object^>{5});
}
catch (MissingFieldException^ ex)
{
    // Show the user that the AField field cannot be accessed.
    Console::WriteLine("Unable to access the AField field: {0}",
        ex->Message);
}

try
{
    // Attempt to access a static AField field defined in the App class.
    // However, because the App class does not define this field,
    // a MissingFieldException is thrown.
    typeof(App).InvokeMember("AField", BindingFlags.Static | BindingFlags.SetField,
        null, null, new Object[] { 5 });
}
catch (MissingFieldException e)
{
 // Show the user that the AField field cannot be accessed.
 Console.WriteLine("Unable to access the AField field: {0}", e.Message);
}

try
    // Attempt to access a static AField field defined in the App class.
    // However, because the App class does not define this field,
    // a MissingFieldException is thrown.
    typeof<App>.InvokeMember("AField", BindingFlags.Static ||| BindingFlags.SetField, null, null, [| box 5 |])
    |> ignore
with :? MissingFieldException as e ->
    // Show the user that the AField field cannot be accessed.
    printfn $"Unable to access the AField field: {e.Message}"

Try
    ' Attempt to access a static AField field defined in the App class.
    ' However, because the App class does not define this field, 
    ' a MissingFieldException is thrown.
    GetType(App).InvokeMember("AField", BindingFlags.Static Or BindingFlags.SetField, _
                               Nothing, Nothing, New [Object]() {5})
Catch e As MissingFieldException
    ' Show the user that the AField field cannot be accessed.
    Console.WriteLine("Unable to access the AField field: {0}", e.Message)
End Try

備註

如果未在建構物件時指定類別名稱，則會傳回繼承自基類的預設文字字串。 這個屬性會 Message 覆寫 。 錯誤訊息應當地語系化。