protected void AddDeveloper_Click(object sender, EventArgs e) { List <int> categoryIds = new List <int>(); foreach (ListItem item in LbCategories.Items) { if (item.Selected) { categoryIds.Add(int.Parse(item.Value)); } } var addedDeveloper = DbManager.AddDeveloper(TxtYazarAdi.Text, TxtYazarSoyadi.Text, TxtYazarUsername.Text, categoryIds); if (addedDeveloper.Success) { Application["Info"] = addedDeveloper.Message; Response.Redirect("Developers.aspx"); Context.ApplicationInstance.CompleteRequest(); } else { InfoLabel(addedDeveloper.Message); } }