private void btnSearch_Click(object sender, EventArgs e)
{
#region 使用实体类在三层中传递数据
ClassBLL objClass1BLL = new ClassBLL();
SchoolMolel objClassModel = new SchoolMolel();
DataBaseOperaClass objDataBase = new DataBaseOperaClass();
objClassModel.SchNum = txtClaNum.Text;
dgvClass.DataSource = objClass1BLL.SearchClass(objClassModel);
#endregion
ShowClass();
}
