Hello,

I'm using the RadTreeView with only ONE root node. My ItemsSource is FolderData. FolderData has only one Item - the root node. I'm using

​ for allowing the dropping in special nodes. 

How can I disable the dropping next to root node? I want to avoid to have more than one root nodes. Is it possible?

I have a ​gridview with two grouping columns. I want to add some images to the group column header

<t:RadGridView x:Name="WorksGridView" Grid.Column="1"

AutoGenerateColumns="False"

ShowGroupPanel="False"

IsFilteringAllowed="False"

CanUserSortColumns="False"

IsReadOnly="True"

SelectionMode="Single"

SelectionUnit="FullRow"

RowIndicatorVisibility="Visible"

IsSynchronizedWithCurrentItem="True"

RowLoaded="RadGridView_RowLoaded"

GroupRenderMode="Flat"

ItemsSource="{Binding WorksGridBinding, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"

SelectedItem="{Binding WokrSelectedItem, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"

CurrentItem="{Binding WorkCurrentItem, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" >

<t:RadGridView.GroupDescriptors>

<t:GroupDescriptor Member="Groups" SortDirection="Ascending" />

<t:GroupDescriptor Member="Subgroups" SortDirection="Ascending" >

<t:GroupDescriptor.AggregateFunctions>

<t:CountFunction Caption="Entries count: " />

</t:GroupDescriptor.AggregateFunctions>

</t:GroupDescriptor>​

</t:RadGridView.GroupDescriptors>

<t:RadGridView.Columns>

<t:GridViewDataColumn Width="*" HeaderTextAlignment="Center" Header="Works" HeaderCellStyle="{StaticResource HeaderStyle}">

<t:GridViewDataColumn.CellTemplate>

<DataTemplate>

<DataGridCell>

<TextBlock Text="{Binding Title}" FontSize="14" HorizontalAlignment="Left" />

</DataGridCell>

</DataTemplate>

</t:GridViewDataColumn.CellTemplate>

</t:GridViewDataColumn>

</t:RadGridView.Columns>

</t:RadGridView>

​

I add one polygon, which is about 10km wide and high, and consists of around 20 points. I add it to a VisualizationLayer and zoom in, and at zoom level 17 the application pretty much hangs (extremely slow update). When this happens, the desktop also becomes extremely slow. The polygon is a PolygonData object. This problem does not occur if I zoom in to a location outside the polygon.

It does not matter if I add it to the Items collection or if I use virtualization, the result is same.

Hi.

I tried to use ExportToXlsx to export a grid to Excel. I used your example (below), but it will only export the last item of the grid. Do you have any idea what can be wrong? I have sold it by using Spreadsheet and building the xlsx by looping through each item, but it would be nicer and easier to use ExportToXlsx.

- Odd

Hi,

I'm working on a WPF application. I have a rad docking that contains radpane groups with unpinned docked radpanes. When these fly out and a button is pressed on them, I want to display a sort of overlay like rectangle. My rectangle covers everything in the MainWindow except the radpane that is activated which seems to always show up over my rectangle. Nothing can be clicked on the Mainwindow except that active radpane but I need everything to be under the rectangle without exception AND I need the active radpane to stay visible. Is there a way to have my rectangle be the absolute topmost thing over the unpinned radpane? I've attempted using the ZIndex of the rectangle and putting it on the highest level of the xaml. It works for all the controls of my app except, like I mentionned, the currently active radpane. 

Cheers!

I'm having some trouble binding to a dynamically created generic collection, I don't get the expanding icon for any rows, even though I double and triple checked the bindings, but my setup is a bit complex. This behavior happens when I'm creating the columns manually (GridViewDataColumn), when I use autogenerated columns the behavior is a bit different, but still not working.

The type of the collection is:

MyDataSourceGeneric<ElementType> : 
     IQueryable<ElementType>, IQueryable, IEnumerable, IEnumerable<ElementType>,
     IOrderedQueryable<ElementType>, IOrderedQueryable​


where ElementType will be a type generated at runtime which inherits a MyRecordBase, so instances of this collection are created by:

Type recordType =  /*... generate type that inherits MyRecordBase ....  */ ;
var genericDs = typeof(MyDataSourceGeneric<>);
var dsType = genericDs.MakeGenericType(recordType);
var queriable = (IQueryable)Activator.CreateInstance( /*​.....*/ );

And this queriable is used as datasource of the TreeListView.

I experimented with 4 approaches to expose the Children, implemented as a property in the generated recordType: coerce to object, coerce to IEnumerable, coerce to IEnumerable<ElementType> and return a plain MyDataSourceGeneric<ElementType>; due to the fact that the ElementType is generated at runtime, the typed-collection properties need to be generated at runtime also.

Hi,

When making a large diagram it's nice to have the RadDiagram scroll along when you drag a shape or a connector.
I'm not really sure what the best approach is here though, I know how to implement it with a regular ScrollView but this is slightly different.

I found some information here: here and here regarding autoscrolling but when I apply it to a diagram like this:

The following error appears in VS:
Error Value cannot be null.
Parameter name: scrollingService

Can autoscroll be enabled for RadDiagrams? Or am I doing something wrong here.

Hey,

Im using the RadScheduleView Control with different ViewDefinitions as below.

If i start my Programm on a monitor with high resolution there is a white space on the right side of the scheduler in each ViewDefinition ( see attached image ).

Is it possible to stretch the ScheduleView over the complete Monitor and get rid of this white field?

Thanks

Thomas