private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e) { StudentsAffairsSystemServer.Service1 StudentsAffairsSystem = new StudentsAffairsSystemServer.Service1(); BindingSource Source = new BindingSource(); Source.DataSource = StudentsAffairsSystem.ShowTeachersDeptStudents(); dataGridView1.DataSource = Source; }