VB-使用StreamWriter写入文件 [英] VB - Writing to a file with StreamWriter

问题描述

我正在尝试使用StreamWriter写入文件。

I'm trying to write to a file using the StreamWriter.

Dim write as IO.StreamWriter
write = new io.streamwriter(file)
write.write(txtEncryption.text)
write.close

我在调试模式下停止了代码，我看到它崩溃并在到达第2行时直接转到异常。

I stopped the code in debug mode and i saw it crashes and goes straight to the exception when reaches line 2.

这是因为我只是制作了文件，并且文件仍在使用中？我该如何避免呢？

It is because i just made the file and it's still in use ? How can i avoid that ?

推荐答案

Dim write As  IO.StreamWriter 
Try 
  write=New IO.StreamWriter(file)  
  write.write(txtEncryption.text)

Catch ex As Exception
  'Prompt error
  Console.WriteLine("Error {0}",ex.Message)

Finally 
    If write IsNot Nothing Then
        write.Close() 
    End If
End Try 

假设（如果未在其他任何地方打开文件）：打开已打开的文件。确保所有打开的流均正确关闭。您也可以使用这种语法

Assumption (if file was not opened anywhere else) : You open already opened one.Make sure that all your opened streams closed properly. You can use this syntax too

Using writer As StreamWriter = New StreamWriter(file)
        writer.Write("....")
           //and so on
End Using

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