private void UserMode(int roleId) { LocationHandler locHandler = new LocationHandler(); List <Location> locList = locHandler.GetLocationByUserRoleId(roleId); drpLocation.DataSource = locList; drpLocation.DataTextField = "Name"; drpLocation.DataValueField = "Id"; drpLocation.DataBind(); if (locList.Count > 1) { ListItem item = new ListItem(); item.Value = "0"; item.Text = "همه موارد"; drpLocation.Items.Insert(0, item); } else { lblLocation.Visible = false; drpLocation.Visible = false; } }