NorthwindDataSet.订单DataTable dt = new NorthwindDataSet.订单DataTable();
NorthwindDataSetTableAdapters.订单TableAdapter ada = new NorthwindDataSetTableAdapters.订单TableAdapter();
ada.Fill(dt); NorthwindDataSet.订单Row row = dt.FindBy订单ID(11077);
NorthwindDataSet.订单明细Row[] r =row.Get订单明细Rows();
以上代码运行时出现如下错误:
无法将类型为“订单Row[]”的对象强制转换为类型“订单明细Row[]”
请问这是什么原因,该如何解决?Get订单明细Rows()的方法:(Visual Studio自动生成的)
public 订单明细Row[] Get订单明细Rows() {
return ((订单明细Row[])(base.GetChildRows(this.Table.ChildRelations["订单订单明细"])));
}
NorthwindDataSetTableAdapters.订单TableAdapter ada = new NorthwindDataSetTableAdapters.订单TableAdapter();
ada.Fill(dt); NorthwindDataSet.订单Row row = dt.FindBy订单ID(11077);
NorthwindDataSet.订单明细Row[] r =row.Get订单明细Rows();
以上代码运行时出现如下错误:
无法将类型为“订单Row[]”的对象强制转换为类型“订单明细Row[]”
请问这是什么原因,该如何解决?Get订单明细Rows()的方法:(Visual Studio自动生成的)
public 订单明细Row[] Get订单明细Rows() {
return ((订单明细Row[])(base.GetChildRows(this.Table.ChildRelations["订单订单明细"])));
}
NorthwindDataSet.订单明细Row[] r =row[0].Get订单明细Rows();
NorthwindDataSet.OrdersDataTable dt = new NorthwindDataSet.OrdersDataTable();
NorthwindDataSetTableAdapters.OrdersTableAdapter adapter = new WindowsApplication8.NorthwindDataSetTableAdapters.OrdersTableAdapter();
NorthwindDataSet.OrdersRow row = dt.FindByOrderID(11077);
//NorthwindDataSet.Order_DetailsRow[] rows = row.GetOrder_DetailsRows();
NorthwindDataSet.Order_DetailsRow[] rows = row.GetChildRows("FK_Order_Details_Orders") as NorthwindDataSet.Order_DetailsRow[];