"Attach" is not allowed because you haven't saved the order yet. Calling "Add" tells Entity Framework that you want to insert a new contact. So you are left with only one option. You need to load the contact....Here's the fastest way to do that:...OrderDetails context = new OrderDetails();
Contact contact = context.GetObjectByKey(new EntityKey("Ord...
I don't know if there's some switch somewhere that you can flip. Otherwise, the straight forward approach would probably be something along the lines of... using (var context = new DomainEntities())
{
var FirstPart = context.Users.Where(u => u.LastName != null);
var SecondPart = context.Users.Where(u => u.LastName == null);
...
Since you are describing the format of the date, I suppose that the datatype of the ...DateCreated... property is ...string.... If it is then you could do:....OrderByDescending(d => Convert.ToDateTime(d.DateCreated)).Take(10)
...Also, your ...Distinct()... will not have much effect if you don't specify your own equality to compare.
You should enable the Auditor...var auditConfiguration = AuditConfiguration.Default;
auditConfiguration.IncludeRelationships = true;
auditConfiguration.LoadRelationships = true;
auditConfiguration.DefaultAuditable = true;
...just add it to place where your app is initialized, Global.asax.cs for example...edited...Far as I know you can't get old val...
Apparently, it's something that EF does internally to ease the creation of resulting objects afterwards. You can't remove the ...order by... instruction.
Your code tries to create something like ...Queryable.OrderBy(queryableData.Expression, ExtValue105 => ExtValue105).... I have no idea why would you expect that to work....If I understand your question correctly, you need to dynamically create an expression like ...attribute => attribute.ExtValue105... and then you can use that to call ...OrderBy()...
Try this:... var adapter = (IObjectContextAdapter)db;
var objectContext = adapter.ObjectContext;
var objectSet = objectContext.CreateObjectSet<SomeEntity>();
var entitySet = objectSet.EntitySet;
var keyNames = entitySet.ElementType.KeyMembers
.Select(e => e.Name).ToList();
...If you want to find the auto ...
You need to change the order of ...Beta... foreign key columns:...public class Beta
{
[Key, Column(Order = 1)]
public string Beta_1 { get; set; }
[Key, Column(Order = 3), ForeignKey("Alpha")]
public string Alpha_2 { get; set; }
[Required, ForeignKey("Alpha"), Column(Order = 2)]
public string Alpha_1 { get; set; }
public...
Just re-index your list results and remove the index before returning....var query = grades.GroupBy(student => student.Name)
.Select(group =>
new { Name = group.Key,
Students = group.OrderByDescending(x => x.Grade)
})
.OrderBy(group => group.Students.FirstOrDefault().Grade)
...