MissingFieldException.Message 属性

定义

命名空间:

System

程序集:

System.Runtime.dll

程序集:

mscorlib.dll

程序集:

netstandard.dll

获取显示缺少字段的签名、类名和字段名的文本字符串。 此属性为只读。

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

属性值

String

错误消息字符串。

示例

以下示例演示了该 Message 属性。 此代码示例是为类提供的大型示例的 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

注解

如果在构造对象时未指定类名，则返回从基类继承的默认文本字符串。 此属性替代 Message。 错误消息应本地化。