void categoryList() { studentlearnEntities1 dbs = new studentlearnEntities1(); var categories = dbs.categories.ToList(); categoryTypeCombo.DataSource = categories; categoryTypeCombo.DisplayMember = "name"; categoryTypeCombo.ValueMember = "id"; }
void studentList() { studentlearnEntities1 db = new studentlearnEntities1(); List <user> students = (from item in db.users where item.authority == 1 select item).ToList(); studentCombobox.DataSource = students; studentCombobox.DisplayMember = "name"; studentCombobox.ValueMember = "id"; }