Win32Exception 類別

定義

public ref class Win32Exception : Exception

public ref class Win32Exception : System::Runtime::InteropServices::ExternalException

public class Win32Exception : Exception

[System.Serializable]
public class Win32Exception : System.Runtime.InteropServices.ExternalException

public class Win32Exception : System.Runtime.InteropServices.ExternalException

type Win32Exception = class
    inherit Exception

[<System.Serializable>]
type Win32Exception = class
    inherit ExternalException
    interface ISerializable

type Win32Exception = class
    inherit ExternalException
    interface ISerializable

Public Class Win32Exception
Inherits Exception

Public Class Win32Exception
Inherits ExternalException

繼承

Object

Exception

Win32Exception

繼承

Object

Exception

SystemException

ExternalException

Win32Exception

衍生

System.Net.HttpListenerException

System.Net.NetworkInformation.NetworkInformationException

System.Net.Sockets.SocketException

System.Net.WebSockets.WebSocketException

屬性

SerializableAttribute

實作

ISerializable

範例

以下程式碼範例說明如何捕捉 Win32 例外並解讀其內容。 範例嘗試啟動一個不存在的執行檔，導致 Win32 例外。 當偵測到例外時，範例會擷取該例外的錯誤訊息、程式碼及來源。

try
{
   System::Diagnostics::Process^ myProc = gcnew System::Diagnostics::Process;
   //Attempting to start a non-existing executable
   myProc->StartInfo->FileName = "c:\nonexist.exe";
   //Start the application and assign it to the process component.
   myProc->Start();
}
catch ( Win32Exception^ w ) 
{
   Console::WriteLine( w->Message );
   Console::WriteLine( w->ErrorCode );
   Console::WriteLine( w->NativeErrorCode );
   Console::WriteLine( w->StackTrace );
   Console::WriteLine( w->Source );
   Exception^ e = w->GetBaseException();
   Console::WriteLine( e->Message );
}

try
{
    System.Diagnostics.Process myProc = new();
    myProc.StartInfo.FileName = @"c:\nonexist.exe"; // Attempt to start a non-existent executable
    _ = myProc.Start();
}
catch (Win32Exception w)
{
    Console.WriteLine(w.Message);
    Console.WriteLine(w.ErrorCode.ToString());
    Console.WriteLine(w.NativeErrorCode.ToString());
    Console.WriteLine(w.StackTrace);
    Console.WriteLine(w.Source);
    Exception e = w.GetBaseException();
    Console.WriteLine(e.Message);
}

Try
    Dim myProc As New System.Diagnostics.Process()
    myProc.StartInfo.FileName = "c:\nonexist.exe"  'Attempting to start a non-existing executable
    myProc.Start()    'Start the application and assign it to the process component.    

Catch w As System.ComponentModel.Win32Exception
    Console.WriteLine(w.Message)
    Console.WriteLine(w.ErrorCode.ToString())
    Console.WriteLine(w.NativeErrorCode.ToString())
    Console.WriteLine(w.StackTrace)
    Console.WriteLine(w.Source)
    Dim e As New Exception()
    e = w.GetBaseException()
    Console.WriteLine(e.Message)
End Try

備註

Win32 錯誤碼在顯示時會從數字表示轉換成系統訊息。 用 NativeErrorCode 來存取與此例外相關的錯誤代碼的數字表示。 欲了解更多錯誤代碼資訊，請參見 Win32 錯誤代碼。