I am working with a DataSet

hi

 private void SortByMultiColumns(ref DataSet myDataSet, string shortstring)

        {

            if (myDataSet != null)

            {

                // Get the DefaultViewManager of a DataTable.

                DataView view = myDataSet.Tables["tablename"].DefaultView;

                // By default, the first column sorted ascending.

                view.Sort = shortstring;

                //shortstring like "State, ZipCode DESC";        

            }

        } 

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Thanks