1
我想从MySQL数据库中删除一个任务。在这样做时,我将删除所有元素和boguses,如下所示。问题是,当它到达deleteboguses方法中的for-loop时,它会抛出一个异常“EntityCommandExecutionException”,为什么会这样呢?我究竟做错了什么?从SQL数据库中删除
public static void DeleteAssignment(int id)
{
var deleteAssignment = from assignment in context.assignment
where assignment.id == id
select assignment;
DeleteElement(id);
foreach (assignment a in deleteAssignment)
{
context.assignment.DeleteObject(a);
}
context.SaveChanges();
}
public static void DeleteElement(int id)
{
var deleteElement = from element in context.element
where element.assId == id
select element;
foreach(var e in deleteElement)
{
DeleteBoguses(e.id);
context.element.DeleteObject(e);
}
context.SaveChanges();
}
public static void DeleteBoguses(int id)
{
var deleteBogus = from b in context.bogus
where b.elementId == id
select b;
foreach(var b in deleteBogus)
{
context.bogus.DeleteObject(b);
}
context.SaveChanges();
}
您好! :)请发布异常和与之相关的消息。 –
System.Data.EntityCommandExecutionException未处理 消息=执行命令定义时发生错误。详情请参阅内部例外。 – Drakthal
什么是内部异常? – Habib