Silverlight RIA Service additions and deletions search for help

The code when making Silverlight queries (initializing data, using Ria Service):

Thisdomaincontext users = new Thisdomaincontext ();

public void LoadData ()
{
entityquery<t_user> query = from T in users. Gett_userquery () select t;
Users. load<t_user> (query);
T_user User = users. T_users.where (t = t.id = = Editid). ElementAt (0);
Griduser.datacontext = user;
}

I think the more I write the code is not, this is the child window inside, and each time loading can not automatically complete data binding, is the above code problem, the child window loading event is what, how to write it can be loaded at the time of the corresponding data binding it, I this is the editor page. There is update has not been done, ask you to teach Ah ~ There are points of OH

Silverlight RIA Service additions and deletions search for help