C# 使用SilverLight Linq到SQL从2个SQL表中删除

我在SQL中得到了两个表，它们都有一个名为Selection\u ID的字段。我想使用Linq to SQL删除所有带有

Selection\u ID=inpSelectionID

的行

我的桌子：

我的C#函数：

void buttonDeleteSelectionList_Click(object sender, RoutedEventArgs e, Canvas canvasAdvancedSearchFieldResults, int inpSelectionID)
{

    PositionServiceReference.PositionServiceClient service = new PositionServiceReference.PositionServiceClient();
    service.DeleteSelectionCompleted += new EventHandler<System.ComponentModel.AsyncCompletedEventArgs>(service_DeleteSelectionCompleted);
    service.DeleteSelectionAsync(inpSelectionID);
}

[OperationContract]
void DeleteSelection(int inpSelectionID)
{
    PositionDataClassesDataContext context = new PositionDataClassesDataContext();

    context.Lloyds_Selection.DeleteOnSubmit(inpSelectionID);
    context.SubmitChanges();

    context.Lloyds_Selection_Vessels.DeleteOnSubmit(inpSelectionID);
    context.SubmitChanges();
}

---

deleteosubmit

需要实体对象作为参数，因此，如果不先从数据库中选择该项，则无法删除该项。还有

deleteAllonsSubmit

方法，但它也需要实体的

IEnumerable

。您可以这样使用它：

context.Lloyds_Selection.DeleteAllOnSubmit(context.Lloyds_Selection.Where(l => l.Selection_ID  == inpSelectionID));

但是，您可以使用

DataContext.ExecuteCommand

对数据库执行原始SQL：

string command = string.format("DELETE FROM Lloyds_Section WHERE Selection_ID = {0}", inpSelectionID");
context.ExecuteCommand(command );

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谢谢正是我想要的；-）