hi .. i have master/dtail relation ith EF
my code :
- 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);
- }
- }
An entity object cannot be referenced by multiple instances of IEntityChangeTracker
Rajkiran SwainPosted May 8, 2018, 9:36 AM