GetModifiedProperties not working for EF4.1 DbContext

entity-framework

Solution

Ok, this seems to do the trick:

var dbContext = new DbContextEntities();
var accountType = dbContext.DBAccountTypes.FirstOrDefault(x => x.Id == 0);
accountType.Name = "XYZ";
var entry = dbContext.Entry(accountType);
var modifiedProperties = entry.CurrentValues.PropertyNames.Where(propertyName => entry.Property(propertyName).IsModified).ToList();
Console.WriteLine(modifiedProperties.Count());    //--------> Outputs 1

More useful information here: http://msdn.microsoft.com/en-US/data/jj592677

Problem

With an ObjectContext: ``` var objContext = new ObjContextEntities(); var accountType = objContext.AccountTypes.FirstOrDefault(x => x.Id == 0); accountType.Name = "ABC"; var stateEntry = objContext.ObjectStateManager.GetObjectStateEntry(accountType); Console.WriteLine(stateEntry.GetModifiedProperties().Count()); //--------> Outputs 1 as expected ``` With a DbContext: ``` var dbContext = new DbContextEntities(); var accountType = dbContext.DBAccountTypes.FirstOrDefault(x => x.Id == 0); accountType.Name = "XYZ"; var dbObjContext = ((IObjectContextAdapter)dbContext).ObjectContext; var stateEntry = dbObjContext.ObjectStateManager.GetObjectStateEntry(accountType); Console.WriteLine(stateEntry.GetModifiedProperties().Count()); //--------> Outputs 0 ``` I would like to migrate to using DbContext but I have code that is dependent on this feature. Is this a known bug? Can anyone suggest an alternative approach? Thanks.

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