[Solved] How to expand/collapse all groups

[Jani]

How can I expand/collapse all RadGridView groups?

ExpandAllGroups() expands only the first group!?

Using this sequence, expands only the visible groups:

foreach ( object item in radGridView.Items )
{
    GridViewGroupRow groupRow = radGridView.ItemContainerGenerator.ContainerFromItem( item ) as GridViewGroupRow;
    if ( groupRow != null )
    {
        groupRow.IsExpanded = true;
    }
}

Using both in combination

foreach ( object item in radGridView.Items )
{
    GridViewGroupRow groupRow = GridView.ItemContainerGenerator.ContainerFromItem( item ) as GridViewGroupRow;
    if ( groupRow != null )
    {
        groupRow.IsExpanded = true;
    }
}
GridView.ExpandAllGroups();

does the job but after scrolling and opening/closing some groups manually, I have a NullReferenceException in Telerik.Windows.Controls.GridView.GrtidVIewVIrtualizingPanel.GetIsCached.

Any suggestions?

Cheers,
Jani

[Pavel Pavlov]

Hi Jani,
This is a known issue. Later today  a fix will be available.
Please download the latest internal build. It will be available for download  in your Client.NET account  in a few hours

Please excuse us for the inconvenience caused.

Kind regards,
Pavel Pavlov
the Telerik team

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[Sébastien ISINGRINI]

Hi,
I use a trial for the moment and I do not have access to this last internal build.

Latest Internal Builds (Trial)

Rss Feed

No internal builds for RadControls for Silverlight 2009.3 1103 Trial have been uploaded recently.

If you do not see any downloads for latest internal builds you need to download a current official release first. Please visit Free Trials or Downloads (if you have a purchase)


Do you have the corrective to see the result for expanding/collapsing bug ?

Thanks,

Seb

[Hristo]

Hello Sébastien,

According to your account info you have not downloaded any version of RadControls for Silverlight. Maybe you obtained your trial copy through some other account. In order to see the latest internal builds you have to download the latest official version of RadControls for Silverlight (Trial or Dev version) using this account. Once this is accomplished you should see the latest internal build version 2009.3.1127.

I believe the fix for the mentioned bug is already included in this latest internal build.

Please let me know if I can be of further assistance

Sincerely yours,
Hristo
the Telerik team

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[Sébastien ISINGRINI]

Thank you Hristo,
You're right. I could download now. I tested the CollapseAllGroups() and ExpandAllGroups() methods.

It seems to work better but there is yet bugs when collapsing/expanding a few times.

I have a System.IndexOutOfRangeException into the method (stack) :
. Telerik.Controls.GridView.IndexTree.CumlativeValue(Int32 endIndex)
. Telerik.Controls.GridView.GridViewVirtualizingPanel.ExtendDesiredSize(Int32 itemsCount, Size stackDesiredSize, Int32 pivotIndex, Boolean before)
. Telerik.Controls.GridView.GridViewVirtualizingPanel.MeasureOverride(Size constraint)
. ...

Do you have any suggestion/issue ?

Seb

[Vlad]

Hello Seb,

Can you send us an example (via support ticket) where we can reproduce and debug this?

Greetings,
Vlad
the Telerik team

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