How to false the visibility of UltraWebGrid columns in Asp.net

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ASP.NET

How to false the visibility of UltraWebGrid columns so i will get only specific columns as there are 10 to 15 columns and i dont want to display ids on run time that are in some columns in Asp.net

I have tried below code but still showing this column is any solution code or property in design or .cs file so can it work --->

WebGridInstallments.Columns[0].Hidden = false;