How to find Controls in GridView with Find Control Object while using Template Field

 if (e.Row.RowType == DataControlRowType.DataRow)
                {
                    Label b2 = (Label)e.Row.FindControl("lblBody");
                    if (b2.Text.Length > 50)
                    {
                        b2.Text = b2.Text.Substring(0, 30);
                        b2.Text = b2.Text + "......";
                    }

                }