Getting Excel add ins to modify array formula parameters; or perform 'ctrl-shift-enter'

Posted by Toby Wilson on Stack Overflow See other posts from Stack Overflow or by Toby Wilson
Published on 2010-06-14T09:10:12Z Indexed on 2010/06/14 9:12 UTC
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c#

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arrays

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excel

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excel-formula

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excel-addins

I am trying to make a C# Excel add in change the parameters of an array formula in-place; i.e. do the same as a user modifying an array formula and hitting ctrl-shift-enter.

Setting the activeCell.FormulaArray property does not achieve this; it throws a 'You cannot change part of an array' error.

Does anyone know how I can achieve this?

A solution that also works in VBA would be brilliant.

I've tried creating some logic that 'walks' to the perimeter of the array formula and deletes it first, but it doesn't account for adjacent array formulas and I believe this is unnecessarily drastic.

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