InvalidEnumArgumentException 類別

定義

public ref class InvalidEnumArgumentException : ArgumentException

public class InvalidEnumArgumentException : ArgumentException

[System.Serializable]
public class InvalidEnumArgumentException : ArgumentException

type InvalidEnumArgumentException = class
    inherit ArgumentException

[<System.Serializable>]
type InvalidEnumArgumentException = class
    inherit ArgumentException

Public Class InvalidEnumArgumentException
Inherits ArgumentException

繼承

Object

Exception

SystemException

ArgumentException

InvalidEnumArgumentException

屬性

SerializableAttribute

範例

以下程式碼範例展示了如何捕捉 InvalidEnumArgumentException 例外並解讀其內容。 範例嘗試透過鑄造傳遞一個無效的枚舉值（MessageBoxButtons），作為 MessageBox.Show 方法的第三個參數。 當捕捉到例外時，範例會擷取相應的錯誤訊息、無效參數、堆疊追蹤及例外的起源。

try
{
   //Attempting to pass an invalid enum value (MessageBoxButtons) to the Show method
   MessageBoxButtons myButton = (MessageBoxButtons)123; // to fix use System::Windows::Forms::DialogResult::OK;

   MessageBox::Show( this,  "This is a message",  "This is the Caption", myButton );
}
catch ( InvalidEnumArgumentException^ invE ) 
{
   Console::WriteLine( invE->Message );
   Console::WriteLine( invE->ParamName );
   Console::WriteLine( invE->StackTrace );
   Console::WriteLine( invE->Source );
}

try
{
    // Attempts to pass an invalid enum value (MessageBoxButtons) to the Show method
    MessageBoxButtons myButton = (MessageBoxButtons)123;
    MessageBox.Show("This is a message", "This is the Caption", myButton);
}
catch (InvalidEnumArgumentException invE)
{
    Console.WriteLine(invE.Message);
    Console.WriteLine(invE.ParamName);
    Console.WriteLine(invE.StackTrace);
    Console.WriteLine(invE.Source);
}

Try
    ' Attempts to pass an invalid enum value (MessageBoxButtons) to the Show method
    Dim myButton As MessageBoxButtons
    myButton = CType(123, MessageBoxButtons)
    MessageBox.Show("This is a message", "This is the Caption", myButton)
Catch invE As System.ComponentModel.InvalidEnumArgumentException
    Console.WriteLine(invE.Message)
    Console.WriteLine(invE.ParamName)
    Console.WriteLine(invE.StackTrace)
    Console.WriteLine(invE.Source)
End Try

備註

若你將無效列舉值傳給方法或設定屬性時，會拋出此例外。