[Solved] Is there a way to define a "SortField" within a GroupDescriptor?

[Rob]

Let's say I have a dataset and grid defined like this:

ObservableCollection<Priority> ListOfPriorities = new ObservableCollection<Priority>()
{
   new Priority() { Name = "Low", ID = 6, SortOrder = 4 },
   new Priority() { Name = "Medium", ID = 1, SortOrder = 3 },
   new Priority() { Name = "High", ID = 5, SortOrder = 2 },
   new Priority() { Name = "Critical", ID = 3, SortOrder = 1 }
};

ObservableCollection<Project> TheList = new ObservableCollection<Project>();
for (int i = 1; i <= 10; i++)
{
   Projectp = new Project()
   {
      ID = 1000 + i,
      Name = Guid.NewGuid().ToString(),
      ProjectPriority = ListOfPriorities[i % 4],
   };
   TheList.Add(p);
}
this.dg.DataContext = TheList;

GroupDescriptor gd = new GroupDescriptor()
{
   Member = "ProjectPriority.Name",
   SortDirection = System.ComponentModel.ListSortDirection.Descending,
   DisplayContent = "ProjectPriority.Name",
   MemberType = typeof(string),
   AggregateFunctions = new AggregateFunctionCollection()
   {
      new CountFunction() { Caption = "count=", ResultFormatString = "[{0}]}
   }
};
this.dg.GroupDescriptors.Add(gd);

I would like to be able to set a "SortField" on the GroupDescriptor so that the groups (Project Priorities in this example) would actually be sorted using their SortOrder property (Critical=1; High=2; Medium=3; Low=4) and not their string value but the string value would still be shown as the "Group Name"...  Is something like this possible?

[Veselin Vasilev]

Hi Rob,

It is not possible to define a sort field inside the group descriptor. What you can do is define a new SortDescriptor and add it to the SortDescriptors collection of the RadGridView.

Hope this helps.

Best wishes,
Veselin Vasilev
the Telerik team

[Rob]

Thanks Veselin.  It seems like that will do the trick for now.  I'm just catching the "grouped" event and inserting a sort descriptor...

Although, I would like to request it for a future version if that is possible... It would be nice to NOT have to do that and have some sort of a SortMember on the GroupDescriptor.

[Veselin Vasilev]

Hi Rob,

I spoke with the developers and they said it won't be easy to implement. Still, we will add it in our list for future consideration.

Best wishes,
Veselin Vasilev
the Telerik team