本文介绍了对象不能被删除,因为它没有在ObjectStateManager发现的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我得到这个错误的对象不能因为它没有在ObjectStateManager中删除。
我的code是:
保护MyEntities sqlEntities; 公共虚拟无效删除(TEntity实体)
{
System.Type的T = typeof运算(TEntity)已;
sqlEntities.DeleteObject(实体);
sqlEntities.SaveChanges();
}
解决方案
这意味着实体未附后(它不是由同一个上下文实例加载)。试试这个:
保护MyEntities sqlEntities;公共虚拟无效删除(TEntity实体)
{
sqlEntities.Attach(实体);
sqlEntities.DeleteObject(实体);
sqlEntities.SaveChanges();
}
I am getting this error "The object cannot be deleted because it was not found in the ObjectStateManager."
My code is:
protected MyEntities sqlEntities;
public virtual void Delete(TEntity entity)
{
System.Type t = typeof(TEntity);
sqlEntities.DeleteObject(entity);
sqlEntities.SaveChanges();
}
解决方案
It means that entity is not attached (it was not loaded by the same context instance). Try this:
protected MyEntities sqlEntities;
public virtual void Delete(TEntity entity)
{
sqlEntities.Attach(entity);
sqlEntities.DeleteObject(entity);
sqlEntities.SaveChanges();
}
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