You can use ajax technologies. for example: CallBack,IHttpHandler,and also ScriptManager

You can do this! For example: protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { if (e.Row.RowType == DataControlRowType.DataRow) { e.Row.Cells[0].BackColor = System.Drawing.Color.Red; } } I hope it can help you !