Multiple Properties In Group Descriptor

[Steven]

HI,

 I was wondering if it was possible to use a combination of properties in GroupDescriptor.

For example:

I have the data set: 

new DummyModel { Name = "Bob", Test = "A", Part = "i", Score = 12},
new DummyModel { Name = "Bob", Test = "A", Part = "ii", Score = 11},
new DummyModel { Name = "Bob", Test = "B", Part = "i", Score = 15},
new DummyModel { Name = "Bob", Test = "B", Part = "ii", Score = 16},
new DummyModel { Name = "Sue", Test = "A", Part = "i", Score = 6},
new DummyModel { Name = "Sue", Test = "A", Part = "ii", Score = 14},
new DummyModel { Name = "Sue", Test = "B", Part = "i", Score = 22},
new DummyModel { Name = "Sue", Test = "B", Part = "ii", Score = 18},

I would like to group by Name and Test and show the sum of the two parts (ordered by Name, then Test).

I recently had this working by adding a property to DummyModel that had both a Name and Test Properties and implemented IComparable and overwrote Equals and GetHashCode which allowed the grouping and sorting as I desired.I used this property as the Member property of the GroupDescriptor.

However this stopped working when we upgraded to v4.0.30319.

Any help on this issue would be greatly appreciated.

Thanks,

Steven

[Steven]

I have spent a bit of time over lunch and tried this in a standalone project and it worked so it looks like the issue is somewhere on our end (though nothing has changed in these files for months...).

Sorry for jumping the gun a bit.

Thanks