You can use the Dir function to check for an existing file by passing the file name and path to the function. If the function returns a zero-length string (""), the file does not exist.
The following sample code checks for the existence of the Autoexec.bat file in the C:\ folder. If the Dir function returns a zero-length string, the file was not found, so a message box displays "No such file!" If the Dir function finds C:\Autoexec.bat, a message box displays "File exists!"
Sample Visual Basic procedure
Dim FileInQuestion As String
FileInQuestion = Dir("C:\Autoexec.bat")
If FileInQuestion = "" Then
MsgBox "No such file!"
MsgBox "File exists!"
For more information about running Visual Basic for Applications macros, click the Office Assistant in Microsoft Word, type how to run a macro, click Search, and then click to view "Run a macro."
For more information about the Dir function, click the Office Assistant in the Visual Basic Editor, type dir, click Search, and then click to view "Dir Function."
Note If the Assistant is hidden, click the Office Assistant button on the Standard toolbar. If Word Help is not installed on your computer, click the following article number to view the article in the Microsoft Knowledge Base:
Article ID: 175923 - Last Review: Mar 23, 2009 - Revision: 1