ErrorEventArgs.GetException 方法

定义

命名空间:

System.IO

程序集:

System.IO.FileSystem.Watcher.dll

Source:

ErrorEventArgs.cs

获取表示已发生的错误的 Exception。

public:
 virtual Exception ^ GetException();

public virtual Exception GetException ();

abstract member GetException : unit -> Exception
override this.GetException : unit -> Exception

Public Overridable Function GetException () As Exception

返回

Exception

表示已发生的错误的 Exception。

示例

以下示例创建 的新 ErrorEventArgs 实例，并使用 Exception初始化它。 然后，该示例调用 GetException 以检索 Exception 并显示错误消息。 没有与此代码关联的窗体。

int main()
{
   
   //Creates an exception with an error message.
   Exception^ myException = gcnew Exception( "This is an exception test" );
   
   //Creates an ErrorEventArgs with the exception.
   ErrorEventArgs^ myErrorEventArgs = gcnew ErrorEventArgs( myException );
   
   //Extracts the exception from the ErrorEventArgs and display it.
   Exception^ myReturnedException = myErrorEventArgs->GetException();
   MessageBox::Show( String::Concat( "The returned exception is: ", myReturnedException->Message ) );
}

public static void Main(string[] args) {
   //Creates an exception with an error message.
   Exception myException= new Exception("This is an exception test");

   //Creates an ErrorEventArgs with the exception.
   ErrorEventArgs myErrorEventArgs = new ErrorEventArgs(myException);

   //Extracts the exception from the ErrorEventArgs and display it.
   Exception myReturnedException = myErrorEventArgs.GetException();
   MessageBox.Show("The returned exception is: " + myReturnedException.Message);
}

Public Shared Sub Main()
    'Creates an exception with an error message.
    Dim myException As New Exception("This is an exception test")
       
    'Creates an ErrorEventArgs with the exception.
    Dim myErrorEventArgs As New ErrorEventArgs(myException)
       
    'Extracts the exception from the ErrorEventArgs and display it.
    Dim myReturnedException As Exception = myErrorEventArgs.GetException()
    MessageBox.Show("The returned exception is: " _
       + myReturnedException.Message)
End Sub