How to Remove Css Style from codebehind?

Here is how we can achieve this from codebhind in c#. Here is the sample code snippet I am here removing CssSytle from DIV but I works for any Control

   1: // Removing Div class when we have only transaction details

   2: divTransactionSummary.Attributes.Add("class", divTransactionSummary.Attributes["class"].ToString().Replace("prodiv", ""));

   3:               

Here “prodiv” is the class of div I have used in my aspx page for this DIV

Hope this helps!!