datavalidation: excel

  1. H

    create function and apply it in datavalidation formula box

    hi everybody ,,, i have created a function named check_ punctuation like this : Function check_punctuation(my_str As String) As Boolean Dim asci_code Dim str_temp For i = 1 To Len(my_str) asci_code = Asc(Mid(my_str, i, 1)) Select Case asci_code Case 32 To 47 check_punctuation = True Case 123 To...
  2. S

    Data validation

    i am trying to build my own invoice and inventory management system on excel. i have over 1200 products without unique codes. these products also have different variations (color , size ) . how do i set up data validation while i am filling out my invoice form ??i can assign a unique code for a...
  3. J

    Data Validation regarding Time

    Afternoon Guys, This may be an easy fix but here goes. Can you use the Data Validation option to flag up an error if a Formula cell passes a specific time? It work great when you manually type the time in, Thanks, J

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