In this article, we have shared VBA code for writing a custom function for extracting the file name and folder name from the file path.
Raw data for this example specifies the full path of certain files.
In this example, we have created VBA custom function “FileOrFolderName” which returns the file or folder name as output.
“FileOrFolderName” function takes two parameters as input. First parameter takes file path as input. Second parameter takes Boolean value as input, if we want file name as output then we will assign True value to this parameter and if we want folder name as output then we will assign False value to this parameter.
For separating the file name and folder name from the file path, firstly, we find the location of last occurrence of path separator within the file path. After the last occurrence of path separator, we can easily separate the file name and folder name as text. On right side of the path separator is the file name and text on left side of the path separator is the folder name.
If no path separator exists in the file path then default directory path is specified as the folder name.
Executing the custom function
For using defined custom function, go to cell C14 and enter the function =FileOrFolderName(B14,FALSE) and in cell D14, enter the function =FileOrFolderName(B14,TRUE), where cell B14 contain the file path.
Cell C14 will give the folder name and Cell D14 will give the file name.
Please follow below for the code
Function FileOrFolderName(InputString As String, _ ReturnFileName As Boolean) As String 'Returns the foldername or the filename based on boolean value assigned Dim i As Integer, FolderName As String, FileName As String i = 0 'Code used for finding the position of last occurence of path separator While InStr(i + 1, InputString, Application.PathSeparator) > 0 i = InStr(i + 1, InputString, Application.PathSeparator) Wend 'Extract the folder path 'If No occurence of path separator is found then assign the default directory path If i = 0 Then FolderName = CurDir Else FolderName = Left(InputString, i - 1) End If 'Extracting the file name FileName = Right(InputString, Len(InputString) - i) 'Returning the folder or file name from function based on ReturnFileName parameter If ReturnFileName Then FileOrFolderName = FileName Else FileOrFolderName = FolderName End If End Function
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