我在Visual Studio 2005中有以下代码.
- Dim OutFile As System.IO.StreamWriter
- Try
- OutFile = New System.IO.StreamWriter(Filename)
- // Do stuff with OutFile
- Catch Ex As Exception
- // Handle Exception
- Finally
- If OutFile IsNot Nothing Then OutFile.Close()
- End Try
但VS2005提出警告“If OutFile IsNot ..”这一行
Variable ‘OutFile’ is used before it has been assigned a value. A null reference exception could result at runtime.
有没有办法通过巧妙地改变代码来消除这个警告,或者只是有更好的方法来做我正在尝试做的事情？
谢谢
抢
- Dim OutFile As System.IO.StreamWriter
- OutFile = Nothing
- Try
- OutFile = New System.IO.StreamWriter(Filename)
- // Do stuff with OutFile
- Catch Ex As Exception
- // Handle Exception
- Finally
- If OutFile IsNot Nothing Then OutFile.Close()
- End Try