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Add Sequential Numbers to a Word Document

This very simple macro adds a number to a document and saves with the file name in the format of "inv1.docx", creating a very simple numbering system for invoices.

Step 1: Create a folder on your hard drive. Create a text file named invoice-number.txt in the folder. To begin with 1, leave the file blank.

To start with a specific number, add this to the text file and save, using one less than the desired number.


Step 2: Open Word then press Alt+F11 to open the VB Editor.

Step 3: Expand Microsoft Word Documents then double click on ThisDocument. Paste the code below into ThisDocument. Change the file paths as needed.

Sub CreateInvoiceNumber()

Invoice = System.PrivateProfileString("C:\Users\user\Documents\a\" & _ 
    "invoice-number.txt", "InvoiceNumber", "Invoice")

If Invoice = "" Then
    Invoice = 1
    Invoice = Invoice + 1
End If

System.PrivateProfileString("C:\Users\user\Documents\a\" & _
    "invoice-number.txt", "InvoiceNumber", "Invoice") = Invoice

' Insert the number in the document
ActiveDocument.Range.InsertBefore Format(Invoice, "#")

ActiveDocument.SaveAs2 FileName:= _
 "C:\Users\user\Documents\a\inv" & Format(Invoice, "#") & ".docx" _
 , FileFormat:=wdFormatXMLDocument, LockComments:=False, Password:="", _
 AddToRecentFiles:=True, WritePassword:="", ReadOnlyRecommended:=False, _
 EmbedTrueTypeFonts:=False, SaveNativePictureFormat:=False, SaveFormsData _
 :=False, SaveAsAOCELetter:=False, CompatibilityMode:=14
End Sub

Step 4: Run the macro.

To place the number in a specific position (this macro adds at the very beginning of the page), create a bookmark in the template named Invoice then use this code to insert the number:

ActiveDocument.Bookmarks("Invoice").Range.InsertBefore Format(Invoice, "#")

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