EF Master Detail错误消息 [英] EF Master Detail error msg

问题描述

hi

我的代码

EngagDBEntities db;
       

        public EDITENGFrm(object obj)
        {
            InitializeComponent();
            db = new EngagDBEntities();
            if (obj == null)
            {
                engagementBindingSource.DataSource = new Engagement();
                db.Engagements.Add(engagementBindingSource.Current as Engagement);
               


            }
            else
            {
               engagementBindingSource.DataSource = obj;
               db.Engagements.Attach(engagementBindingSource.Current as Engagement);
                

            }

        }

 我有这样的错误：

 i have this error :

IEntityChangeTracker的多个实例无法引用实体对象

< strong style ="margin：0px; padding：0px; border：0px; line-height：inherit; font-family：Arial，'Helvetica Neue'，Helvetica，sans-serif; font-size：15px; vertical-align：baseline ;颜色：＃242729">请

thanks

推荐答案

关闭大写锁定。人们不欣赏这一点。我相信你已被告知多次，所以你知道不要这样做。

Turn off caps lock. People don't appreciate that. I am sure you have been told many times so you know not to do it.

这篇关于EF Master Detail错误消息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IT屋！