private void button5_Click(object sender, EventArgs e) { Medicine_Data data = new Medicine_Data(); MedicineContext context = new MedicineContext(); GlobalVar gl = new GlobalVar(); if (textBox3.Text != "") { data.Create_Diseas_Record(GlobalVar.selected_reception_ID, textBox3.Text); dataGridView4.Rows.Clear(); if (context.Diseases.Where(c => c.reception_id == GlobalVar.selected_reception_ID).Count() > 0) { foreach (var r in context.Diseases.Where(c => c.reception_id == GlobalVar.selected_reception_ID).ToList()) { string _dis_name = context.Diseases.Where(c => c.dis_id == r.dis_id).Select(c => c.disease_value).FirstOrDefault().ToString(); dataGridView4.Rows.Add(r.dis_id, _dis_name); } gl.SetContextMenu_Collumns(dataGridView4, id_context); } } }