Entity framework: check if there are changes to be saved from a specific Entity

I want to detect if changes where made to a specific set of entity before saving.

I am currently using this method but it returns true if there are any Entity modified in the context.

const EntityState ModifiedID = EntityState.Modified
                             | EntityState.Added
                             | EntityState.Deleted;

var objectStateEntries = Database.LabelTAB
                          .Context.ObjectStateManager
                          .GetObjectSt开发者_开发百科ateEntries(ModifiedID);

return objectStateEntries.Any();

Is there any way to detect if there are some unsaved entries in the LabelTAB entity only, and not in the entire Context?

Thank you.

Try this:

var objectStateEntries = Database.LabelTAB
                                 .Context
                                 .ObjectStateManager
                                 .GetObjectStateEntries(ModifiedID)
                                 .Where(e => e.Entity is LabelTAB);

return objectStateEntries.Any();

Use:

var states  = new List<EntityState>() {  EntityState.Modified,
                                         EntityState.Added,
                                         EntityState.Deleted};

var query = from t in Database.LabelTAB
            where states.Contains(t.EntityState);

Each entity has an EntityState property. Instead of querying the ObjectContext you can just use the property on the entity.