SaveChangesAsync(IEnumerable)

private void buttonRemove_Click(object sender, RoutedEventArgs e)

List<owner> EntityRemove = new List<owner>();

owner _owner = (owner)MyDataGrid.SelectedItem;

Thank you very much Kimj

The purpose of choosing to use custom login is to enable me to extend to the existing database which has user particulars and unfortunately the tables there are not set up according to ASP.Net authentication needs. So, in the MyUserBase class, I have added a link to the existing database and it requires the use of assemblies related to data access.

Hi ting

I tried to follow the steps to told me but still I am getting an error as show below.

The formatter threw an exception while trying to deserialize the message: There was an error while trying to deserialize parameter http://idealblade.com/EntityModel:LoginResult. The InnerException message was ‘Element ’ http://idealblade.com/EntityModel:Principal’ contains data of the ‘http://schema.datacontract.org/2004/07/DevCombobox:MyUserbase’ data contact. The deserializer has no knowledge of any type that maps to this contract. Add the type corresponding to ‘MyUserbase’ to the list of known types for example, by using the KnownTypeAttribute attribute or by adding it to the list of known types passed to DataContractSerializer. Please see InnerException for more details.

Here is my  implementation of IEntityLoginManager

public class LoginManager : IEntityLoginManager

    {

        [DebuggerNonUserCode]

        public IPrincipal Login(ILoginCredential pCredential, IdeaBlade.EntityModel.EntityManager pEntityManager)

        {

         string mUserName = string.Empty;

         string mPassword = string.Empty;

         if (pCredential == null)

         {

             mUserName = "admin";

             mPassword = "12345678";

         }

         else

         {

             mUserName = pCredential.UserName;

             mPassword = pCredential.Password;

         }

         testEntities mManager = new testEntities(pEntityManager);

         VerifyCredentials(mUserName, mPassword);

            Int64 user_id = 1;

            IIdentity identity = new AppIdentity(mUserName, user_id, mPassword);

            UserBase userbs = new MyUserbase(identity, GetRoles(mUserName));

            return userbs;

        }

Here is my implementation of UserBase

    [DataContract]

    [DiscoverableType(DiscoverableTypeMode.KnownType)] 

    public class MyUserbase : UserBase

    {

        public MyUserbase(IIdentity identity, IList<string> roles)

            : base(identity, roles)

        {

        }

    }

Best Regards

Vincent.

Thank you ting.

In fact I did not show the upper part of my code but It is there as shown below

              myObj bill = null;
              bill = manager.CreateEntity<myObj>();             
              bill.EntryDate = DateTime.Now;
              bill.ID = "Admin";

              bill.EntityAspect.AddToManager();

if (EM.HasChanges())

ClassArray = new MyEntities[1];

ClassArray[0] = new MyEntities("Entity1");

TestClass test = new TestClass("Entity1");