并非所有路径都返回一个值 [英] not all paths return a value

问题描述

我继承了以下迁移的vb6代码（vb2005）

但是我不知道并非所有路径返回值 squiggly - 这是一个错误goto的

''功能'吗？


私有函数CreateFolder（ByVal sFileName As String）As Boolean


错误GoTo错误


''必要时创建

如果Directory.Exists（sFileName）= False那么

Directory.CreateDirectory（sFileName）

结束如果


''创建文件夹成功

CreateFolder =真


错误：


结束功能

i have inherited the following migrated vb6 code (vb2005)
but i DONT get the "not all paths return a value" squiggly - is this a
''feature'' of on error goto?

Private Function CreateFolder(ByVal sFileName As String) As Boolean

On Error GoTo Errors

''Create it if necessary
If Directory.Exists(sFileName) = False Then
Directory.CreateDirectory(sFileName)
End If

''Succeeded in creating a folder
CreateFolder = True

Errors:

End Function

推荐答案

建议用经过结构化的异常处理替换经典的VB6错误处理

。


但是要回答你的具体问题：在代码中，（空）错误处理程序中没有返回特定值

。


只需输入CreateFolder = False即可。在错误：之后的行标签。


注意：你也可以写Return< value>而不是

"< function name> =< value>"。


/ Joergen Bech


On Tue，2006年1月3日08:30:06 -0800，guy < gu*@discussions.microsoft.com>

写道：

It is recommended that classic VB6 error handling be replaced
with structured exception handling.

But to answer your specific question: In the code, no specific value
is returned in the (empty) error handler.

Just put a "CreateFolder = False" line after the "Errors:" label.

Note: You can also write "Return <value>" instead of
"<function name> = <value>".

/Joergen Bech

On Tue, 3 Jan 2006 08:30:06 -0800, guy <gu*@discussions.microsoft.com>
wrote:

我继承了以下迁移的vb6代码（vb2005）
但是我不要得到并非所有路径都返回一个值。 squiggly - 这是错误goto的一个
''功能'吗？

私函数CreateFolder（ByVal sFileName As String）As Boolean

错误GoTo错误

''如有必要，创建它
如果Directory.Exists（sFileName）= False那么
Directory.CreateDirectory（sFileName）
结束如果

''成功创建文件夹
CreateFolder = True

错误：

结束功能

i have inherited the following migrated vb6 code (vb2005)
but i DONT get the "not all paths return a value" squiggly - is this a
''feature'' of on error goto?

Private Function CreateFolder(ByVal sFileName As String) As Boolean

On Error GoTo Errors

''Create it if necessary
If Directory.Exists(sFileName) = False Then
Directory.CreateDirectory(sFileName)
End If

''Succeeded in creating a folder
CreateFolder = True

Errors:

End Function

我没有在VB.NET中编程 - 但并非所有路径都返回一个值，因为在设置createFolder = True之前将
置为错误将无法提供返回

值，你需要返回一个bool。


在你的错误部分放置CreateFolder = False。更好 - 开始使用

try / catch语句并摆脱goto

-

问候


John Timney

Microsoft MVP


" guy" < gu*@discussions.microsoft.com>在消息中写道

news：5E ********************************** @ microsof t.com ...

I dont program in VB.NET - but not all paths return a value because falling
into error before you set createFolder=True would fail to provide a return
value, and you need to return a bool.

Put CreateFolder = False in your error section. Better still - start using
try/catch statements and get rid of the goto
--
Regards

John Timney
Microsoft MVP

"guy" <gu*@discussions.microsoft.com> wrote in message
news:5E**********************************@microsof t.com...

我继承了以下迁移的vb6代码（vb2005）
但我不知道并非所有路径都返回一个值。 squiggly - 这是错误goto的一个
''功能'吗？

私函数CreateFolder（ByVal sFileName As String）As Boolean

错误GoTo错误

''如有必要，创建它
如果Directory.Exists（sFileName）= False那么
Directory.CreateDirectory（sFileName）
结束如果

''成功创建文件夹
CreateFolder = True

错误：

结束功能

i have inherited the following migrated vb6 code (vb2005)
but i DONT get the "not all paths return a value" squiggly - is this a
''feature'' of on error goto?

Private Function CreateFolder(ByVal sFileName As String) As Boolean

On Error GoTo Errors

''Create it if necessary
If Directory.Exists(sFileName) = False Then
Directory.CreateDirectory(sFileName)
End If

''Succeeded in creating a folder
CreateFolder = True

Errors:

End Function

John Timney（MVP）写道：

John Timney ( MVP ) wrote:

我不用VB.NET编程 - 但并非所有路径都返回一个值，因为
在设置之前会出错createFolder = True将无法提供返回值，你需要返回一个bool。

I dont program in VB.NET - but not all paths return a value because
falling into error before you set createFolder=True would fail to
provide a return value, and you need to return a bool.

我肯定他意识到这个问题至于为什么他*没有*得到一个

编译器警告。我原本预计会有一个。


-


（O）enone

I''m sure he realises that, the question was as to why he *didn''t* get a
compiler warning. I would have expected there to be one too.

--

(O)enone

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