protected void btnRemove_Click(object sender, EventArgs e) { try { int id = -1; string _id = Request.QueryString["id"].ToString(); int.TryParse(_id, out id); int userId = CurrentEnvironment.LoggedUser.Id; int i = 0; if (id != 1 && id != 2 && id != 3) { i = ItemCategory.Remove(id); } if (i > 0) { lblSuccess.Visible = true; lblWarning.Visible = false; lblError.Visible = false; gvItemCategory.DataBind(); ClearControls(this); } else { lblSuccess.Visible = false; lblWarning.Visible = false; lblError.Visible = true; } } catch (Exception ex) { lblSuccess.Visible = false; lblWarning.Visible = false; lblError.Visible = true; } }