Exception during grouping: "Specified method is not supported"

[yonadav]

Hi,

We're trying to do a simple two-level grouping in a RadGridView:

            // Add grouping according to device, then parameter category
            MainGrid.GroupDescriptors.Add(
                new GroupDescriptor()
                {
                    Member = "OwnerContainer",
                    SortDirection = ListSortDirection.Ascending
                });
            MainGrid.GroupDescriptors.Add(
                new GroupDescriptor()
                {
                    Member = "ParameterCategory",
                    SortDirection = ListSortDirection.Ascending
                });

This has worked great in Q3 2009. Now that we've moved over to Q3 SP2, we're getting an exception when the grid loads:

"Specified method is not supported"

This appears to be associated with a call to a Reset function on a LINQ wrapper to our CollectionView. The CollectionView itself hasn't changed.

Any idea what causes this and how to overcome it?

Thanks,

yonadav

[Stefan Dobrev]

Hello yonadav,

We have addressed this issue in our latest internal build. We are not calling IEnumerator.Reset() anymore. Can you please download the latest internal binaries and verify the state of this problem?

All the best,
Stefan Dobrev
the Telerik team

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[yonadav]

Hi Stefan,

Thank you for the answer.

Where can we find the internal build for downloading? Also, is there a list of changes from the SP2 release to the internal build so we know what else has changed?

Thanks,
yonadav

[Hristo]

Hello yonadav,

You can download the TRIAL latest internal build from Your Account->Free Trials->RadControls for WPF->Latest Internal Builds. You can follow this link.

You can find a detailed list of all changes following Q3 2009 SP2 here.

Sincerely yours,
Hristo
the Telerik team

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[yonadav]

Hi Hristo,

The internal build has indeed solved the problem.

When will this fix make it into an SP or another formal release?

Thanks,

yonadav

[Hristo]

Hi yonadav,

Our next official release Q1 2010 is scheduled for the first half of March.

Sincerely yours,
Hristo
the Telerik team

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