How to limit the text and display full text with read more button in grid view

How to limit the text and display full text with Read More button in grid view

DataTable table=new DataTable();
           //GridView1.DataSource = table;
           string str2 = "select id,title,description from tbl_event order by id desc";
           obj.ds = obj.ret_ds(str2);
           GridView1.DataSource = obj.ds;
           GridView1.DataBind();
           int i = 0;
           foreach (DataRow row in table.Rows)
           {
               string x = row["description"].ToString();
               if (x.Length > 10)
               {
                   GridView1.Rows[i].Cells[0].Text = x.Substring(0, 10) + "<a href=EventDetail.aspx>Read More </a>";
               }
               i++;
               if (i >= table.Rows.Count)
               {
                   return;
               }
           }