protected void AddToCart_Click(object sender, EventArgs e) { if (Session["user"] != null) { LinkButton b = sender as LinkButton; string Quantity = Page.Request.Form[b.ToolTip.ToString()].ToString(); bool flag = true; if (string.IsNullOrWhiteSpace(Quantity)) { Message.CssClass = "alert alert-danger"; Message.Text = "Please enter some quantity!"; } if (flag) { int ret; myDAL objmyDAl = new myDAL(); int done = 0; ret = objmyDAl.AddItemToCart_DAL(Session["user"].ToString(), b.ToolTip.ToString(), Quantity, ref done); if (ret == 1) { if (done == 1) { Response.Redirect("./Concerts.aspx"); } else { Message.Text = "Not enough tickets"; //Show message for no enough tickets } } else { Message.CssClass = "alert alert-danger"; Message.Text = "Please enter an appropriate numeric figure in quantity"; //execption; } } } else { Response.Redirect("./Sign_In.aspx"); } }