Is there any way to delete a column with conditional formatting in smartsheet using smartsheet C# SDK?
When attempting to delete a column that is involved in a conditional formatting rule you will receive an error back stating it is used in a conditional formatting rule and the rule needs to be deleted first before the column can be deleted.
At this time, the Smartsheet API doesn't have the ability to interact with conditional formatting rules to perform the deletion or any other actions on conditional formatting rules. The conditional formatting would have to be deleted manually by someone working with Smartsheet in their browser. Then API requests could be made to delete the column.