Telerik Forums
UI for WPF Forum
1 answer
12 views

1. Go to the GridView | Filtering Configuration example in the Telerik WPF Demo app.

2. Choose Popup for Filtering Mode.

3. Open filtering for Company Name.

4. Alt-Tab to another app window.

5. Observe as filter window appears on top of the app's window.

Is this expected behaviour?

Martin Ivanov
Telerik team
 answered on 29 Apr 2025
0 answers
17 views

Hello

Please check the attached file: contextmenu.png
I want the 1st row icon column to have Padding=0,0 and Margin=0,0,0,0

Waiting for your reply

anna
Top achievements
Rank 1
Bronze
Iron
 updated question on 28 Apr 2025
2 answers
16 views

Hi,

how can we hide the Navigation Options from the RadOfficeNavigationBar?

<telerik:RadOfficeNavigationBar>
    <telerik:RadOfficeNavigationBarItem Content="{lex:Loc Key=EditCommandText}" 
                                        Command="{Binding EditCommand}" >
        <telerik:RadOfficeNavigationBarItem.Style>
            <Style TargetType="telerik:RadOfficeNavigationBarItem">
                <Setter Property="Visibility" Value="Visible" />
                <Style.Triggers>
                    <DataTrigger Binding="{Binding FormMode}" Value="{x:Static tim:FormMode.Modify}">
                        <Setter Property="Visibility" Value="Collapsed" />
                    </DataTrigger>
                </Style.Triggers>
            </Style>
        </telerik:RadOfficeNavigationBarItem.Style>
    </telerik:RadOfficeNavigationBarItem>
    <telerik:RadOfficeNavigationBarItem Content="{lex:Loc Key=SaveCommandText}" 
                                        Command="{Binding SaveCommand}" >
        <telerik:RadOfficeNavigationBarItem.Style>
            <Style TargetType="telerik:RadOfficeNavigationBarItem">
                <Setter Property="Visibility" Value="Collapsed" />
                <Style.Triggers>
                    <DataTrigger Binding="{Binding FormMode}" Value="{x:Static tim:FormMode.Modify}">
                        <Setter Property="Visibility" Value="Visible" />
                    </DataTrigger>
                </Style.Triggers>
            </Style>
        </telerik:RadOfficeNavigationBarItem.Style>
    </telerik:RadOfficeNavigationBarItem>
    <telerik:RadOfficeNavigationBarItem Content="{lex:Loc Key=CancelCommandText}" 
                                        Command="{Binding CancelCommand}" >
        <telerik:RadOfficeNavigationBarItem.Style>
            <Style TargetType="telerik:RadOfficeNavigationBarItem">
                <Setter Property="Visibility" Value="Collapsed" />
                <Style.Triggers>
                    <DataTrigger Binding="{Binding FormMode}" Value="{x:Static tim:FormMode.Modify}">
                        <Setter Property="Visibility" Value="Visible" />
                    </DataTrigger>
                </Style.Triggers>
            </Style>
        </telerik:RadOfficeNavigationBarItem.Style>
    </telerik:RadOfficeNavigationBarItem>
</telerik:RadOfficeNavigationBar>

Regards,

Andreas

Andreas
Top achievements
Rank 1
Iron
 answered on 28 Apr 2025
1 answer
20 views
We build using the Telerik UI for WPF NuGet Packages from your NuGet server.  Since I updated all our Telerik NuGet package references from a 2024 version to the most current 2025 version, I am now receiving licensing messages during my build process.  A lot of licensing messages.  They tend to look like this:


17>[Telerik and Kendo UI Licensing]
17>      Telerik and Kendo UI License Key found at: C:\Users\joe\AppData\Roaming\Telerik\telerik-license.txt (UserDirectory)
17>      License issued at 2025-02-25 to j*******@g*******.com.
17>[Telerik and Kendo UI Licensing]

And they are all over the place.

Please tell me that there is a way that I can silence these messages

They make it more difficult to locate the build output lines that I am truly interested in.  I don't need this information but if it must be output I don't need it this many times.
Martin Ivanov
Telerik team
 answered on 28 Apr 2025
1 answer
24 views

Hello

Question  about ===> public ControlTemplate SeparatorTemplateKey {get;set}

 

I don't know how to use (public ControlTemplate SeparatorTemplateKey {get;set}

). Please teach me.
I don't know how to use (public ControlTemplate SeparatorTemplateKey {get;set}

), so it's very difficult for me.

 

 

<Window.Resources
        <ControlTemplate x:Key="SeparatorTemplate" TargetType="telerik:RadMenuItem"
            <Grid HorizontalAlignment="Stretch">                 
                    <Rectangle Fill="Red" Height="20" Width="1" VerticalAlignment="Stretch"/> 
                    <Rectangle Fill="Blue" Height="20" Width="1" VerticalAlignment="Stretch"/>               
            </Grid
        </ControlTemplate>   
</Window.Resources>     
    
<Grid x:Name="LayoutRoot" Background="White"
        <telerik:RadMenu x:Name="radMenu" ClickToOpen="False" VerticalAlignment="Top" HorizontalAlignment="Left" Margin="8,8,0,0"
            <telerik:RadMenuItem Header="File"/> 
            <telerik:RadMenuItem Header="Edit" IsSeparator="True" Template="{StaticResource SeparatorTemplate}" />              
            <telerik:RadMenuItem Header="View" />            
        </telerik:RadMenu

</Grid>

 

 

--------

using System.Windows.Controls;
public override ObservableCollection<MenuItem> GetMenu()
{
    var contextmenuitem = new ObservableCollection<MenuItem>(); 
    var eRNode = crateMenuItem("Report");
    eRNode.Items.Add(createMenuItem("Sub"));
  
    contextmenuitem.Add(Separate); <===
    ControlTemplate template = new ControlTemplate();
    template.key = "Tamplate";
    contextmenuitem.Add(SeparatorTemplateKey(template)); <===ControlTemplate x:Key="Template" OF XAML.xaml File .... <==I don't know grammar. How do I write code?
    contextmenuitem.Add(eRNode);
}

 

 

 

 

Martin Ivanov
Telerik team
 answered on 28 Apr 2025
0 answers
26 views

WPF, RadContextMenu

Is there a way to display different colors in the RadContextMenu ?

Display RadContextMenu various colors based on the Separator of RadContextMenu.

In RadContextMenu,

Also, can you set the image margin(or icon margin) to 0?

Please check the attached file : RadContextMenu2WPF.png, RadContextMenu1WPF.png

anna
Top achievements
Rank 1
Bronze
Iron
 asked on 17 Apr 2025
1 answer
25 views

Hi Team,

We have developer license for the Telerik UI for WPF product, however we are unable to get the developer MSI for the Telerik UI for WPF 2024.1.130.45. Only the trial version is visible now.

Could you please guide us to get the dev  version of 2024.1.130.45? 

Martin Ivanov
Telerik team
 answered on 16 Apr 2025
0 answers
13 views

Hello Telerik Team,

I'm working with the RadDiagram control and have a scenario where I need certain RadDiagramShapes to display their AdditionalContent persistently â€“ meaning the content should remain visible even when the shape is not selected. Additionally, I want to achieve this behavior and customize the AdditionalContent's styling purely through MVVM binding approaches.

Could you please provide guidance or code examples demonstrating:

  1. How to keep AdditionalContent visible for specific shapes regardless of selection state.
  2. How to dynamically style AdditionalContent (e.g., colors, templates) using MVVM properties.

Any suggestions for binding strategies or relevant Shape/Style properties would be greatly appreciated. Thank you!

Joey
Top achievements
Rank 1
 asked on 16 Apr 2025
1 answer
18 views

Hi,

I tried to combine the 2 telerik examples related to RadTreeviews - the RadTreeView as File Explorer and that from SDK repo related to drag and drop between 2 Radtreeview.

I finally succeeded to make an working short program, but I don't know why by dragging a file from one tree to another, the UI of the second tree shows the dropped file twice - even the Tree ItemsSource is correct (only one file dragged and dropped)

after Puplating the trees,I used DragDropMAnager and the following classes (as they are defined in telerik example, adapted to files/folder structure)

DragDropManager.AddDragOverHandler(this.tree1, OnTree1DragOver, true);
DragDropManager.AddDragOverHandler(this.tree2, OnTree2DragOver, true);
DragDropManager.AddDropHandler(this.tree2, OnTree2Drop, true);

My OnTree2DragOver function:

var options = DragDropPayloadManager.GetDataFromObject(e.Data, TreeViewDragDropOptions.Key) as TreeViewDragDropOptions;
if (options == null)
    return;

// The condition after the first OR operator is needed to deny the drop of items in Application File. (sub-items)
RadTreeViewItem dropTargetItem = options.DropTargetItem;

var draggedItem = options.DraggedItems.First();
if (dropTargetItem == null ||
(dropTargetItem != null &&
     options.DropTargetItem.DataContext is File &&
     options.DropPosition == DropPosition.Inside) ||
    draggedItem is Folder)
{
    options.DropAction = DropAction.None;
}

options.UpdateDragVisual();

 

 

my OnTree2Drop function is:

 var options = DragDropPayloadManager.GetDataFromObject(e.Data, TreeViewDragDropOptions.Key) as TreeViewDragDropOptions;
 if (options == null)
     return;
 File draggedItem = options.DraggedItems.FirstOrDefault() as File;
 if (draggedItem == null)
     return;
 RadTreeViewItem dropTargetItem = options.DropTargetItem;
 if (dropTargetItem == null)
     return;
 var dropItemModel = dropTargetItem.DataContext;
 if (dropItemModel == null)
     return;
 var dropTree = sender as RadTreeView;
 if (dropTree != null)
 {
     // Disable drop in tree2 File.
     if (dropItemModel is File && options.DropAction == DropAction.None)
     {
         e.Handled = true;
         return;
     }
     //Drop in tree2
     if (dropItemModel is Folder || dropItemModel is File)
     {
         options.DropAction = DropAction.Copy;
         //options.UpdateDragVisual();
         Folder destinationFolder = null;
         if (dropItemModel is Folder)
         {
             // Dropping inside Application.
             destinationFolder = dropItemModel as Folder;
         }
         else
         {
             // Dropping Before or After an Application Resource.
             destinationFolder = options.DropTargetItem.ParentItem.DataContext as Folder;
         }
         if (destinationFolder == null)
         {
             return;
         }
         File file = new File()
         {
             Name = draggedItem.Name
         };
         destinationFolder.Items.Add(file);
    
         //options.UpdateDragVisual();
     
         System.IO.File.Copy(@draggedItem.FullPath, System.IO.Path.Combine(@destinationFolder.FullPath, System.IO.Path.GetFileName(@draggedItem.FullPath)));
         options.UpdateDragVisual();

My OnTree1DragOver:

var options = DragDropPayloadManager.GetDataFromObject(e.Data, TreeViewDragDropOptions.Key) as TreeViewDragDropOptions;
if (options != null)
{
    options.DropAction = DropAction.None;
    options.UpdateDragVisual();
    var draggedFile = options.DraggedItems.First() as File;
    e.Handled = true;
}

In the attached picture you'll see Adeliatte Italic.ttf twice, even I dragged and drpped it only once.

Could you please take a short look and tell me what I'm doing wrong?

Or, if it is not too much time consuming for you to come back with an example of 2 treeviews acting as explorer and with d&d functionality?

 

Thank you in advance for your support.

Danny

Danny
Top achievements
Rank 1
Iron
 answered on 14 Apr 2025
0 answers
15 views


This is how my RadStepProgressBar appears for some of the steps.

When I change the Height (or StepSpacing or Margin) of the RadStepProgressBar control in XAML hot reload, the appearance corrects itself.



This doesn't always happen, but only sometimes. I have set the binding for the ItemsSource property of RadStepProgressBar to my steps collection, and set the SelectedIndex using binding whenever a step is completed

What am I doing wrong?
Nikhil
Top achievements
Rank 1
 asked on 14 Apr 2025
Narrow your results
Selected tags
Tags
+? more
Top users last month
Anislav
Top achievements
Rank 6
Silver
Bronze
Bronze
Jianxian
Top achievements
Rank 1
Iron
Marco
Top achievements
Rank 3
Iron
Iron
Iron
Jim
Top achievements
Rank 2
Iron
Iron
Nurik
Top achievements
Rank 2
Iron
Iron
Want to show your ninja superpower to fellow developers?
Top users last month
Anislav
Top achievements
Rank 6
Silver
Bronze
Bronze
Jianxian
Top achievements
Rank 1
Iron
Marco
Top achievements
Rank 3
Iron
Iron
Iron
Jim
Top achievements
Rank 2
Iron
Iron
Nurik
Top achievements
Rank 2
Iron
Iron
Want to show your ninja superpower to fellow developers?
Want to show your ninja superpower to fellow developers?