How do I get the selected value when I am using MVVM?

I have tried this:

<telerik:RadColorEditor SelectedColor="{Binding SelectedColor, Mode=TwoWay}" ColorMode="RGB" />

but it doesn't give me anything back.

I am using the "UI for WPF Q1 2016" release, WPF, .NET Framework 4.6.1, Windows 10 and C#.

I am trying to implement drag and drop within a single RadTreeView. The default drag visual has a great structure, but has some problems for me. (The background of the drag item is dark and I can't read the dragged item's name, and the drop tooltip seems to be calling ToString() on my viewmodel, and that is not the text that I want.)

Researching, the page "Customize the TreeViewDragVisual" (https://docs.telerik.com/devtools/wpf/controls/radtreeview/how-to/customize-treeviewdragvisual)
tells me to derive from RadTreeView and to modify the template. But I am using NoXaml binaries and this page indicates that I must set the control template in app.xaml. Therefore it will apply to all RadTreeViews, and this doesn't seem like what I want to do.

Then I find the forum post on modifying the tooltip (https://www.telerik.com/forums/treeview---how-to-modify-the-drag-drop-drag-tooltip-target-part)
which points me at the DragDropManager. The manager has a "Set Drag Visual" topic (https://docs.telerik.com/devtools/wpf/controls/dragdropmanager/how-to/dragdrompmanager-howto-set-drag-visual) which says to handle DragDropManager.AddDragInitializeHandler and create a new drag visual in
the handler. This seems better than modifying app.xaml.

Also DragDropManager has the topic "Customizing the DragVisual" (https://docs.telerik.com/devtools/wpf/controls/dragdropmanager/behaviors/customizingdragvisual) which talks about implementing IDragVisualProvider. But the example is for ListBox and I'm using a RadTreeView.

So I'm all kinds of confused.

First, I need to fix the drag visual. I like the Drop Preview Line, the Drag Preview, and the Drag Tooltip parts. I need to change the Drag Preview and the Drag Tooltip.

Then I need to handle the "drop", which I think is done by attaching my own handler to DragDropManager.Drop event.

Thanks for any help.

-John.

Hi,

I have List<Class> Classes, and List<Student> Students in each Class. I would like to show classes in different columns and students in different rows like the table below. Is it possible to do it by binding Classes to ItemsSource of RadGridView and make the items list horizontally?

Class 1   Class 2   Class 3   Class 4
Andy       Barry      Cathy      Darren
Eric         Frank     Gary        Helen
Iris          Jason     Kyle         Leon
Mary       Neil        Oscar      Peter

Thanks,

David

Hi,

I'm trying to create a vertical tree in the RadDiagram with two wings.

Both wings will consist of multiple items. I've looked at your example and it seems to me that it's randomized which items get displayed above and under.

One solution I had in mind was to make two trees. One with TreeUp and the other with TreeDown. Somehow combine the roots of both trees together, but I still haven't figured out how to do this / or if this is even possible.

Is there a solution to this?

Any help would be appreciated. Thanks

I'm using RadCartesianChart to display LineSeries. (How to attach the sample project?)

I'm implementing drag point for certain LineSeries, but always get null value. (See ConvertPointToData_Null.png)

Could anyone help on this?

--> Null data exception

--> Enable drag capability for specific line series only

--> Enable hide/show line series (like add checkboxes to the legend?)

Thanks.

Hi,

I need to bind the increasesmall and decreasesmal to 2 different smallchange.

Is it possible?if not there is a way that the increasesmall/decreasesmall will increase/decrease with 2 different stepvalue.

Thank you.

Hi,

I am using the following code for progressbar, but when I'm resizing it it clips the progressbar when I reduce the size, but when I'm increasing the size it stretches fine according to the window size but on reducing the size it does not resize itself according to the parent reduced size but instead clips itself.

Please let me know what I am doing wrong in the code, I have to use these colors in my progressbar.

Thanks,

Tayyaba Naz

I bound RadTileList's Tile Item with Number type field. and assigned ContentTemplateSelector. Idea is I want to load different Templates based on bound Content.

ContentTemplateSelector is working fine, and I am getting required result. Only minor issue I found that Content value (number) appears at bottom before Template loads i.e. before animation I can see Coent value which is (1,2,3,4).

I noticed the same issue in WPF demo NASDAQ tile. For reference I am attaching screenshot and yellow highlighted actual content value. Is there any way to hide actual Content value.