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DisplayContent of GroupDescriptor problem

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Alexander Urbanec
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Alexander Urbanec asked on 10 Jul 2010, 12:56 PM
Hello,

I specified a default GroupDescriptor in XAML with a custom DisplayContent which should be shown in the group panel as far as I understood.
The problem is while the designer shows the specified DisplayContent correctly, at runtime the displayed text is the one of the Member Property set for the GroupDescriptor, which results in a bad end user experience.

I hope you can help me with this issue! Thanks,
Alex

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Veselin Vasilev
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answered on 12 Jul 2010, 07:54 AM
Hello Alexander Urbanec,

I could not reproduce the problem in a sample project. Please find it attached and let me know if I am missing something.

Sincerely yours,
Veskoni
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Alexander Urbanec
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answered on 13 Jul 2010, 01:13 PM
Hello,

this is really strange. Here is the XAML I'm using, the scenario is a little more complex but I think it should work that way.
<telerik:RadGridView Grid.Column="0" IsReadOnly="True" SelectionMode="Single" AutoGenerateColumns="False" AutoExpandGroups="True" CanUserDeleteRows="False" CanUserFreezeColumns="False" CanUserInsertRows="False" CanUserReorderColumns="False" CanUserSortColumns="True" GridLinesVisibility="None" AlternationCount="2" RowIndicatorVisibility="Collapsed">
 
  <telerik:RadGridView.GroupDescriptors>
    <telerik:GroupDescriptor Member="AssignmentType.ShortValue" DisplayContent="Type"/>
  </telerik:RadGridView.GroupDescriptors>
 
  <telerik:RadGridView.Columns>
    <telerik:GridViewDataColumn Width="Auto" Header="Date Start" DataMemberBinding="{Binding Path=DateStart}" DataFormatString="{}{0:d}"/>
    <telerik:GridViewDataColumn Width="Auto" Header="Date End" DataMemberBinding="{Binding Path=DateEnd}" DataFormatString="{}{0:d}"/>
    <telerik:GridViewDataColumn Width="Auto" Header="Type" DataMemberBinding="{Binding Path=AssignmentType.ShortValue}" GroupMemberPath="AssignmentType.Value"/>
    <telerik:CustomGridViewDataColumn Width="*" Header="Text" DataMemberBinding="{Binding Path=Value}"/>
  </telerik:RadGridView.Columns>
</telerik:RadGridView>

When I launch my app I get group byAssignmentType.ShortValue in the Group Header. Maybe there is a smarter way to mark a column as default grouping column, one that also recognises the GroupMemberPath setting.

Thanks,
Alex
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Veselin Vasilev
Telerik team
answered on 13 Jul 2010, 01:53 PM
Hi Alexander Urbanec,

I admit that this is strange since it is working in the sample app I sent you.

What is the version of the Telerik assemblies in your project?
Can you try to group by DateStart instead, just for the test:

<telerik:RadGridView.GroupDescriptors>
    <telerik:GroupDescriptor Member="DateStart" DisplayContent="Type"/>
  </telerik:RadGridView.GroupDescriptors>


Greetings,
Veskoni
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Alexander Urbanec
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answered on 13 Jul 2010, 02:38 PM
Hello,

the version I'm using is 2010.1.603.35.
I also experimented with default grouping by other columns (DateStart, Value) with the same result.
I removed all unnecessary code with no effect.

Thanks,
Alex
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Veselin Vasilev
Telerik team
answered on 14 Jul 2010, 03:06 PM
Hello Alexander Urbanec,

Can you try to reproduce the problem in the test project I sent you?

I cannot tell what could be the reason unless I debug it locally.

Sincerely yours,
Veskoni
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JJ Loubser
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answered on 20 Feb 2012, 03:25 PM
where does type come from is it a struct? can I use a struct for the groupdescriptor?
like

struct province
{

float value;

string type;

}

then we can set the Member to the value and the displaycontent to the type
like this

<telerik:GroupDescriptor Member="Province.value"
                                     SortDirection="Descending"
                                     DisplayContent="Type"
                                    />

??
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Alexander Urbanec
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Veselin Vasilev
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Alexander Urbanec
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JJ Loubser
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