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How to avoid exception while setting more number of characters in list validation?

Maximum number of characters accepted in ListOfValues property for DataValidation is 256 (as per MS Excel). If the array list which is assigned to ListOfValues property holds more than 256 characters, then it may lead to an exception.

This issue can be resolved by assigning the list of values to the unused ranges in Spreadsheet and refer that range as validation range(DataRange)

C#

 

Note: you can assign the array list of values to an unused range and hide that range.

Sample link: WF

Article ID: Published Date: Last Revised Date: Platform: Control:
7081 08/31/2016 10/14/2016 WinForms Spreadsheet
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