我如何解决这个问题

问题描述

我的代码。

my code.

var chk = (from c in FMS.Depositers where c.RecepitNo == DepositNo select c).FirstOrDefault();

                       chk.DepositStatus = "PreClosed"
                       gt.ApplyCurrentValues(chk.EntityKey.EntitySetName, chk);

                       gt.SaveChanges();

显示错误信息。

showing error msg like this.

An object with a key that matches the key of the supplied object could not be found in the ObjectStateManager. Verify that the key values of the supplied object match the key values of the object to which changes must be applied.

推荐答案

这篇关于我如何解决这个问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！