protected void btnDelete_Command(object sender, CommandEventArgs e) { try { string id = Convert.ToString(e.CommandArgument); if (!string.IsNullOrEmpty(id)) { CourseBLL courseBLL = new CourseBLL(); Courses course = new Courses(); course.CourseId = Convert.ToInt32(QuaintSecurityManager.Decrypt(id)); if (course.CourseId > 0) { if (courseBLL.Delete(course)) { Alert(AlertType.Success, "Deleted successfully."); LoadList(); } else { Alert(AlertType.Error, "Failed to delete."); } } } } catch (Exception) { Alert(AlertType.Error, "Failed to delete."); } }