Need to release file after File.Create...

VBtyler · May 14th, 2009, 12:50 PM

Thanks in Advance.

I need to create files in a Sub and immediately write from StreamWriter. I can't figure out how to release the newly created files so StreamWriter can work. I get an error that file is in use by another process. This works if I create the files outside of VB and just run the StreamWriter.

Code:

 
Imports System.IO
Public Class Form1
    Public a_HoldArray(60) As String  'a_HoldArray is populated in another Sub.
    Public filenamevariable As String
 
    'CREATE AND WRITE FILE
    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        ' GET A VARIABLE INTO THE FILE NAME
        filenamevariable = "DataTime"
        File.Create("C:\Documents and Settings\xxxxxx_" & filenamevariable & "_xxxxxx.txt")
 
        Dim FileWriter As StreamWriter
        FileWriter = New StreamWriter("C:\Documents and Settings\xxxxxx_DateTime_xxxxxx.txt", False)
        For i = 1 To UBound(a_HoldArray)
            FileWriter.WriteLine(a_HoldArray(i))
        Next
        FileWriter.Close()
    End Sub
End Class

gbianchi · May 14th, 2009, 01:09 PM

You never try google..

Msdn has this:

The FileStream object created by this method has a default FileShare value of None; no other process or code can access the created file until the original file handle is closed.

Since you never release the file, it's still open...

http://msdn.microsoft.com/en-us/library/d62kzs03.aspx

Apocolypse2005 · May 19th, 2009, 07:12 AM

Having said that though, i've got the same problem even when i release all the objects from memory even though the streamWriter and streamReader method writes it all to disk after you close it!

Mind you, having said all that i haven't really looked on msdn so i will have to migrate my url to msdn for quick lookup!