Using a UDF in Excel to update the worksheet

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There have been many questions here on SO (and many other forums) along the lines of "what's wrong with my user-defined function" where the answer has been "you can't update a worksheet from a UDF" - this restriction outlined here:

Description of limitations of custom functions in Excel

Nov 7 in Others by Kithuzzz
• 20,660 points
37 views

1 answer to this question.

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The MSDN KB is incorrect.

It says

A user-defined function called by a formula in a worksheet cell cannot change the environment of Microsoft Excel. This means that such a function cannot do any of the following:

  1. Insert, delete, or format cells on the spreadsheet.
  2. Change another cell's value.
  3. Move, rename, delete, or add sheets to a workbook.
  4. Change any of the environment options, such as calculation mode or screen views.
  5. Add names to a workbook.
  6. Set properties or execute most methods.
answered Nov 7 by narikkadan
• 37,660 points

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