c# - EntityFramework 5 - InvalidOperationException when accessing DbContext.ChangeTracker.Entries -


in dbcontext implementation if have method called "ismodified". used application show kind of "dirty" state. within method access changetracker of dbcontext shown below.

if access changetracker.entries while data loaded / materialized database invalidoperationexception because internal stateentry collection has changed.

is there way around without using try / catch. or there maybe more efficient way of tracking modified state of context?

public bool ismodified() {     return this.changetracker.entries().any(e => e.state != entitystate.unchanged); }

convert dbcontext objectcontext , try following implementation of ismodified:

var context = new yourdbcontext(); var adapter = (iobjectcontextadapter)context; var objectcontext = adapter.objectcontext; ...  public bool ismodified() {     bool modified =      context.objectstatemanager.getobjectstateentries(~entitystate.unchanged);                                .any();     return modified; }

you can try handle context.objectstatemanager.objectstatemanagerchanged event , update property in event. should more elegant.


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