What This VBA Macro Code Does
When you ask your users to supply a file name during your VBA automation, it is important to incorporate some sort of test to ensure it is valid and doesn't cause a treacherous error. The below VBA function will tell you (True or False) whether a given text string can be the name of a PowerPoint file.
This function tests a given name by saving a .ppt PowerPoint file to the Temporary Files folder and then immediately deleting it. If the action of saving the file with the given name errors out, then the function knows that the text was not a proper name for an PowerPoint file. If no errors occur then the function will return a TRUE value.
Function ValidFileName(FileName As Variant) As Boolean
'PURPOSE: Determine If A Given PowerPoint File Name Is Valid
Dim ppt As Presentation
'Create a Temporary PPT file
On Error GoTo InvalidFileName
Set ppt = Presentations.Add
ppt.SaveAs Environ("TEMP") & "\" & FileName & ".ppt", ppSaveAsPresentation
On Error Resume Next
'Close Temp PowerPoint
'Delete Temp File
Kill Environ("TEMP") & "\" & FileName & ".ppt"
'File Name is Valid
ValidFileName = True
'Close Temp PowerPoint
'File Name is Invalid
ValidFileName = False
How Do I Modify This To Fit My Specific Needs?
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