我在一些代码中放置了一个try / catch块,偶尔抛出一个预期的异常,但不是捕获它并显示消息框,它会停止调试器并提醒我异常未处理. 如何处理此异常,以便在发生异常时我的代码不会停止
如何处理此异常,以便在发生异常时我的代码不会停止?
Friend myDevInfo As New devInfo
''' <summary>
''' Closes the device handle obtained with CreateFile and frees resources.
''' </summary>
'''
Friend Sub CloseDeviceHandle()
Try
WinUsb_Free(myDevInfo.winUsbHandle)
If Not (myDevInfo.deviceHandle Is Nothing) Then
If Not (myDevInfo.deviceHandle.IsInvalid) Then
myDevInfo.deviceHandle.Close()
End If
End If
Catch ex As System.AccessViolationException
MsgBox("System.AccessViolationException")
Catch ex As Exception
Throw
End Try
End Sub
当没有附加调试器时,try … catch块应该按预期工作. 您可以在Debug – >下定义调试器中断的异常.例外,我认为默认是在AccessViolationException上中断.
