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9 answers
251 views
Hello everybody :)

My scenario is the following: 

I have a TreeView with services grouped by category just like this:

Cateogory 1:
Service 1
Service 2
Category 2:
Service 3
Service 4:

And another empty TreeView. The user can drag and drop services from the "services-tree" to the "empty-tree".
I have set the IsDragDropEnable = true, and the default behavior is great but I want to customize the default behavior of the TreeView to achieve the following:

1.- When the user drag an drop successfully a service, this service should not be removed from the "service-tree".
2.- Prevent that the user drop the same service into the "empty-tree" more than once. The "empty-tree" cannot host the same item more than once.
3.- Allow that the user reorder the services on the "empty-tree", i.e. allow drag and drop for the items of the "empty-tree" before or after it current position but no inside of each other.

Can you tell me please which events I have to handle to achieve this behavior? If possible I really appreciate if you add some code snippets.  

Is this possible?
I hope you can help me.

Best Regards
Jorge

Petar Mladenov
Telerik team
 answered on 17 May 2012
10 answers
440 views
Good afternoon,

I'm trying to build my own Autocomplete (intellisense) RadRichTextBox. For the autocomplete popup I'm using your RadListView.

<
Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition />
</Grid.ColumnDefinitions>
<!-- RichTextBox -->
<telerik:RadRichTextBox x:Name="radRichTextBox" AcceptsReturn="True" Width="800" Margin="10" Grid.Column="0" DocumentContentChanged="radRichTextBox_DocumentContentChanged">
<telerik:RadRichTextBox.Effect>
<DropShadowEffect ShadowDepth="10" Color="Gray" Opacity=".4" Direction="320" RenderingBias="Performance" />
</telerik:RadRichTextBox.Effect>
<telerik:RadRichTextBox.LayoutTransform>
<ScaleTransform ScaleX="{Binding ElementName=Scale, Path=Value}" ScaleY="{Binding ElementName=Scale, Path=Value}" />
</telerik:RadRichTextBox.LayoutTransform>
<telerik:RadDocument x:Name="radDocument" />
</telerik:RadRichTextBox>
<!-- AutoCompltete ListBox-->
<telerik:RadListBox Width="100" Height="100">
<ListBoxItem Content="Item 1" />
<ListBoxItem Content="Item 2" />
<ListBoxItem Content="Item 3" />
<ListBoxItem Content="Item 4" />
</telerik:RadListBox>
</Grid>

Do you know how I can get the caret position and set the RadListBox position next to it / slightly offset?

Thank you very much for your time,

Rob
Robert
Top achievements
Rank 1
 answered on 16 May 2012
1 answer
92 views
We are using HtmlFormatProvider to export the content of a RichTextBox, you can set the styles to be exported Inline instead of creating classes, but, is there a way to export it on Html markup only? 
<i>tag</i>
instead of 
<span style="font-style: italic"> tag</span>
Thanks in advance

Mihail
Telerik team
 answered on 16 May 2012
2 answers
371 views
I know this is an odd request and probably not Ideal but is there anyway to set a wpf checkbox to be checked when the binding value is false and unchecked when it is true?  The checkbox is bound to a field in a database object and because of a legacy application I can't just reverse the values in the table. 
Dev
Top achievements
Rank 1
 answered on 16 May 2012
2 answers
112 views
Good morning,
I've followed the example provided by BreadCrumb control, but when I try to enter in TextMode text path isn't display (BreadCrumb is white).
In my output console there are two strange errors:
1) "System.Windows.Data Error: 25 : ItemTemplate and ItemTemplateSelector are not valid for item.; Type='RadBreadcrumbBarItem'"; it occurs at application startup.
2) "System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for target element. BindingExpression:Path=(0); DataItem=null; target element is 'RotateTransform' (HashCode=36078627); target property is 'Angle' (type 'Double')"; it occurs if I try to enter in TextMode.

Could you help me?

NOTE: problems occur with dlls version 2012.1.0326.35 and also with the last nightly build 2012.1.0507.35 
NOTE 2: my program is build on Framework 3.5 and I'm using telerik dll for 3.5 (but I've tested also with 4.0 but problems persist)
Elfo
Top achievements
Rank 1
 answered on 16 May 2012
1 answer
606 views
Hi 

I am having issues setting the RadWindow.Alert window from Code. The method I tried is as follows:

RadWindow.Confirm(
                new DialogParameters
                    {
                        Content = new ContentControl { Width = 800, Height = 600, Content = editorView },
                        DialogStartupLocation = WindowStartupLocation.CenterScreen,
                        Closed = (sender, e) => this.AddChartSeriesGroupClosed(sender, e, newChartSeriesGroup),
                    });

The window size using the above code seems to be 400x600 which is coincidental i.e. it is the size regardless of the Width and Height values used above. I have tried MinWidth and MinHeight as well.

Any ideas?
Yana
Telerik team
 answered on 16 May 2012
7 answers
580 views
Hello,

I'm using WPF RadGridView which loades a large database table (about 200000 rows).
I bind the GridView to VirtualQueryableCollectionView object which makes async calls to WCF service in the ItemsLoading  event.
The data from the WCF web service is, of course, retured after the VirtualQueryableCollectionView.ItemsLoading event is ended.
When the data is retured from the WCF web service I load the data to the VirtualQueryableCollectionView using the VirtualQueryableCollectionView.Load method.
The problem is when I drag the scroller, for example, to the middle of the grid it doens't show the loaded data, because the data is loaded a little later after the VirtualQueryableCollectionView.ItemsLoading is finished.
When I scroll to other point in the grid and return back to that place, the data which was loaded earliear is shown correctly.
It seems like it needs to send some notify to the GUI that the data is loaded after the VirtualQueryableCollectionView.ItemsLoading is finished (like INotifyPropertyChanged interface or something).

BTW, when I use sync WCF web service, it works correctly because the data is loaded within the VirtualQueryableCollectionView.ItemsLoading event.

How can I resolve this problem?

Thanks,
Alex Vr.
Rolf
Top achievements
Rank 2
 answered on 16 May 2012
3 answers
207 views
Hi,

Is there any reason why the richtextbox TextInput event doesn't fire? Does it have something to do with it hosting a document?

DocumentContentChanged etc events fire. I am just wondering why TextInput doesnt?... mainly for reference purposes.

Thanks,

Rob
Boby
Telerik team
 answered on 16 May 2012
0 answers
150 views
I've added a resource file to my WPF application and in it I have:

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation">

<Style TargetType="telerik:RadGridView" BasedOn="{StaticResource {telerik:ThemeResourceKey ThemeType=telerik:Office_BlueTheme, ElementType=telerik:RadGridView}}" />
</ResourceDictionary>

and in App.xaml I have:
<Application.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="Dictionary1.xaml" />
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Application.Resources>


And in a usercontrol I've added a RadGridView; Now the group section and gridline borders are blue but the header remains black.
why the theme dosen't apply to column header?
Mehrdad
Top achievements
Rank 1
 asked on 16 May 2012
4 answers
290 views
Hello!

I have a grid with columns and columngroups, which I declare in XAML. According to the time periods of the data, which should be displayed, I have to change to header of the columngroups.

I tried something like ...

GridViewColumnGroup colGrp = rgvAbsaetze.FindName("xcolGrpMon" + i) as GridViewColumnGroup;
colGrp.Header = aktueller_Monat;

... but the colGrp stays null.

How can I achieve this?

Kind regards

Michael

P.S.: I'm new to WPF!
Michael
Top achievements
Rank 1
 answered on 16 May 2012
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