在VB.NET中,如果从Catch返回一个值,那么Finally代码仍会执行吗？
例如(我已经将这段代码概括了一下)：
Try
response = Client.doRequest()
Catch ex As Exception
'Request threw an error - Fatal failure.
InsertErrorLog(ex)
Return False
Finally
DisposeClient()
End Try
我需要确保DisposeClient()始终执行.因为我要退出Catch,最终还是会被执行吗？
最后总是执行块,无论代码是否执行到Catch块.
参见：https://msdn.microsoft.com/en-us/library/fk6t46tz.aspx
尝试使用此代码：
Dim Temp As String
Private Sub Button1_Click(sender As Object,e As EventArgs) Handles Button1.Click
Temp = "A"
MessageBox.Show(Test())
MessageBox.Show(Temp)
End Sub
Private Function Test() As String
Try
Temp = "B"
Throw New Exception()
Temp = "C"
Return "Try"
Catch ex As Exception
Temp = "D"
Return "Catch"
Finally
Temp = "E"
End Try
Temp = "F"
Return "End"
End Function
它显示消息：
Catch
然后
E
这意味着,即使函数在Catch块返回,也始终执行finally块.