protected void btnAdd_Click(object sender, EventArgs e) { int SellerId = int.Parse(Session["UserId"].ToString()); string name = txtName.Text; string URL = txtURL.Text; string description = txtDesc.Text; string price = txtPrice.Text; List <Show> Shows = ShowController.GetAllShow(); bool ShowNameUnique = true; foreach (var show in Shows) { if (name.Equals(show.Name)) { ShowNameUnique = false; } } string response = ""; if (ShowNameUnique) { response = ShowController.CheckAddShow(SellerId, name, URL, description, price); } else { response = "Show Name Must be Unique!"; } if (response == "") { Response.Redirect("../Home/HomePage.aspx"); return; } else { lblError.Text = response; } }