MissingMemberException.Message Properti

Definisi

Ruang nama:

System

Rakitan:

netstandard.dll, System.Runtime.dll

Sumber:

MissingMemberException.cs

Mendapatkan string teks yang memperlihatkan nama kelas, nama anggota, dan tanda tangan anggota yang hilang.

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 MissingMemberException kelas .

try
{
    // Attempt to access a static AnotherField field defined in the App class.
    // However, because the App class does not define this field,
    // a MissingFieldException is thrown.
    typeof(App).InvokeMember("AnotherField", BindingFlags.Static |
        BindingFlags.GetField, null, null, null);
}
catch (MissingMemberException e)
{
 // Notice that this code is catching MissingMemberException which is the
 // base class of MissingMethodException and MissingFieldException.
 // Show the user that the AnotherField field cannot be accessed.
 Console.WriteLine("Unable to access the AnotherField field: {0}", e.Message);
}

try
    // Attempt to access a static AnotherField field defined in the App class.
    // However, because the App class does not define this field,
    // a MissingFieldException is thrown.
    typeof<App>.InvokeMember("AnotherField", BindingFlags.Static ||| BindingFlags.GetField, null, null, null)
    |> ignore
with :? MissingMemberException as e ->
    // Notice that this code is catching MissingMemberException which is the
    // base class of MissingMethodException and MissingFieldException.
    // Show the user that the AnotherField field cannot be accessed.
    printfn $"Unable to access the AnotherField field: {e.Message}"

    Try
        ' Attempt to access a static AnotherField field defined in the App class.
        ' However, because the App class does not define this field, 
        ' a MissingFieldException is thrown.
        GetType(App).InvokeMember("AnotherField", BindingFlags.Static Or BindingFlags.GetField, _
                                   Nothing, Nothing, Nothing)
    Catch e As MissingMemberException
        ' Notice that this code is catching MissingMemberException which is the  
        ' base class of MissingMethodException and MissingFieldException.
        ' Show the user that the AnotherField field cannot be accessed.
        Console.WriteLine("Unable to access the AnotherField field: {0}", e.Message)
    End Try
End Sub

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.

Properti ini hanya dapat dibaca.

Lihat juga

• Exception
• MissingFieldException
• MissingMethodException
• Menangani dan Membuang Pengecualian