MissingFieldException.Message Properti

Definisi

Ruang nama:

System

Rakitan:

netstandard.dll, System.Runtime.dll

Sumber:

MissingFieldException.cs

Mendapatkan string teks yang memperlihatkan tanda tangan bidang yang hilang, nama kelas, dan nama bidang. Properti ini hanya dapat dibaca.

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

Nilai Properti

String

String pesan kesalahan.

Contoh

Contoh berikut menunjukkan Message properti . Contoh kode ini adalah bagian dari contoh yang lebih besar yang disediakan untuk MissingFieldException kelas .

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

Keterangan

Jika nama kelas tidak ditentukan saat objek dibuat, string teks default yang diwarisi dari kelas dasar dikembalikan. Properti ini mengambil alih Message. Pesan kesalahan harus dilokalkan.