vb.net - 退出父子

Question

我有点困惑如何处理我正在编写的VB .net应用程序中的错误。

这就是我所拥有的:

Private Sub Func1()
 Try
   'stuff that could raise an error

 Catch ex As Exception
   MsgBox("There is an error" & ex)
   End
 End Try

End Sub

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
  Func1()
 'a lot of stuff that will also raise an error is Func1 does
End Sub

如果有错误，此代码将退出应用程序。

如果删除“结束”，它将继续并在Sub Button1_click中引发多个错误。

因此，我需要在Func1中放置一些内容，这些内容可能会中断Sub Button1_click的执行。

我可以放置Exit Sub，但我有很多Subs都使用此Func1，所以我更喜欢从Func1中完成此操作的方法。

Answer 1

如果不想在Func1失败的情况下继续执行Button1_Click，则将Func1更改为 bool(boolean) 函数

Private Function Func1() As Boolean
 Try
   'stuff that could raise an error

   Return True
 Catch ex As Exception
   MsgBox("There is an error" & ex)
   return False
 End Try

End Function

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
  if Func1() = True Then
     'a lot of stuff that will also raise an error is Func1 does
  End If
End Sub