This article was previously published under Q154822
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The Dir() function can be used to return a long filename but it does notinclude path information. By parsing a given short path/filename into itsconstituent directories, you can use the Dir() function to build a longpath/filename. This article demonstrates how to accomplish this behavior.
The following code example includes a function that will convert shortfilenames into their long filename equivalents and also includes a simpledemonstration of the function's use.
Start Visual Basic. Form1 is created by default.
Place a Command button onto Form1.
From the Insert menu, select Module to add a single code module to the project.
Add the following code to Module1:
Public Function GetLongFilename _ (ByVal sShortName As String) _ As String Dim sLongName As String Dim sTemp As String Dim iSlashPos As Integer 'Add \ to short name to prevent Instr from failing sShortName = sShortName & "\" 'Start from 4 to ignore the "[Drive Letter]:\" characters iSlashPos = InStr(4, sShortName, "\") 'Pull out each string between \ character for conversion While iSlashPos sTemp = Dir(Left$(sShortName, iSlashPos - 1), _ vbNormal + vbHidden + vbSystem + vbDirectory) If sTemp = "" Then 'Error 52 - Bad File Name or Number GetLongFilename = "" Exit Function End If sLongName = sLongName & "\" & sTemp iSlashPos = InStr(iSlashPos + 1, sShortName, "\") Wend 'Prefix with the drive letter GetLongFilename = Left$(sShortName, 2) & sLongName End Function
Add the following to the Command1_Click event:
Private Sub Command1_Click() 'Assumes C:\Program Files\Common Files is a valid path Print GetLongFilename("C:\PROGRA~1\COMMON~1") End Sub
Choose Start from the Run menu, or press the F5 key to start.
Click the Command button.
If the path you have supplied is valid, the long equivalent will beprinted on the form. If it is not valid, nothing will print, in which caseyou will need to supply a valid short filename in the Command1_Click eventcode.