Hello,
when I try to open the DropDownContent of a RadDropDownButton in code behind then the DropDownContent is not shown after change visibility of the RadDropDown Button from collapsed to visible.

See following code example:

in code behind:

 

Result:

The btnDropDown appears on the window and act like opened but the DropDownContent is not shown.

  <telerik:RadTreeListView.ChildTableDefinitions>
                <telerik:TreeListViewTableDefinition ItemsSource="{Binding Children}" />
            </telerik:RadTreeListView.ChildTableDefinitions>
            <telerik:RadTreeListView.Columns>
                <telerik:GridViewDataColumn DataMemberBinding="{Binding Path=Item.Name}" Header="Name" SortMemberPath="Item.Name" DataType="{x:Type sys:String}"  />

            </telerik:RadTreeListView.Columns>

    public class Node
    { 
        public object Item { get; set; }

        //public WarehouseItem Item { get; set; } this line works fine

        public ObservableCollection<Node> Children { get; set; } = new ObservableCollection<Node>();
    }

 

If my Node.Item is object or dynamic type, sorting and filtering do not work, if it is a specific entity type like WarehouseItem they works fine.

The same thing happens to RadGridView.

Hello,

I ran into a crash when updating the Docking.for.Xaml nuget to the latest stable 2021.1.119 version. This doesn't crash in the previous stable 2020.3.1020 version.

Steps to reproduce: create a .NET Core (did not try with .NET Framework because my actual program uses Core) WPF solution in Visual Studio, copy the PaneGroupExtensions class from https://github.com/telerik/xaml-sdk/blob/master/Docking/PaneGroupItemsSource/PaneGroupExtensions.cs and fix the namespace, and also around lines 48-55 don't bother with content or datacontext for the pane. The important thing just is to create a pane and added to the Group.Items collection. Add the Docking nuget package to the project. Then create a simple ViewModel class for your MainWindow with an collection property named "ForExtension" and set it as the DataContext for the MainWindow.

 

Then add the following simple RadDocking inside your MainWindow.xamls Grid:

 

Hi

 

I tried the dark Fluent style for RadTreeView but it didn't work well.

where is the problem from?

Look at the pictures

Hi,

a simple question. 

I work with no-xaml dll's applying a theme choosed by user dinamically.

Now, I have simple forms with caption/control list.

When the control receive the focus I want apply to relatative caption (that is a textblock) a different foreground.

A good ipothesys is to apply current AccentHighBrush but I don't know the current theme.

Another idea is set a style in code-bihind for the textblock when control is focused and remove style wen focus lost.

But, wath style I can apply to textblock?

Other ideas?

marc.

 

Hello !
I want to Edit Numeric Values with 2 digits in an GridView.

My First Solution:
Using an GridViewDataColumn and set the CellEditTemplate to a
RadMaskedNumericInput like this (SelectionOnFocus="SelectAll" (Important!))
<telerik:GridViewDataColumn Header="Listenpreis" Width="80" TextAlignment="Right" HeaderTextAlignment="Right"
                            DataMemberBinding="{Binding Path=Listenpreis}" DataFormatString="F2">
  <telerik:GridViewDataColumn.CellEditTemplate>
     <DataTemplate>
        <telerik:RadMaskedNumericInput Margin="0" SelectionOnFocus="SelectAll" HorizontalAlignment="Stretch"
               Value="{Binding Path=Listenpreis, Mode=TwoWay, ValidatesOnExceptions=true, NotifyOnValidationError=true, ValidatesOnDataErrors=True, UpdateSourceTrigger=PropertyChanged}"
               SpinMode="None"
               FormatString="n2"/>
     </DataTemplate>
  </telerik:GridViewDataColumn.CellEditTemplate>
</telerik:GridViewDataColumn>
This works well for Editing, but the Enter Key doesn't work as expected to go to the next Row in the same Column.
I can Only change the Column with the Tab Key.

My Second Solution:
Using an GridViewMaskedInputColumn like this:
<telerik:GridViewMaskedInputColumn Header="Listenpreis3" Width="80" TextAlignment="Right" HeaderTextAlignment="Right"
                                   MaskType="Numeric"
                                   DataMemberBinding="{Binding Path=Listenpreis}" DataFormatString="{} {0:N2}"  />

But here i'am missing the 2 Digits Mask on Editing and "SelectAll" on Enter the Cell.

How can i get this working as expected ?

Hello, i am regulary wondering if there is a recommended way to create a window is: create an usercontrol or create an instance in code-behind? 

The documention gives me the impression that the code-behind is the way to go and the usercontrol is just a work-around, but in most examples the usercontrol method is used.

Or it does not matter at all and one should use the method that fits best at the moment?

 

many greetings :-)

I have a few RadButton controls where I would like a different command to execute if the user "long presses" on the button.

For instance a single simple click would do 1 thing and a long click and hold then release would do something else.

How would I do that?

Hello

If I update, build and run as usual, I get an error. (2020.3.1221.45 -> 2021.1.215.45)

 

 

 

System.Windows.Markup.XamlParseException'(PresentationFramework.dll)

Cannot find resource named 'CardView_DropDownButton_Foreground_Focused'. Resource names are case sensitive

 

I don't use CardvView. I just update and I get an error.

(My environment is NoXaml and Themes is Window7)

Use Reference : Telerik.Windows.Controls,  Telerik.Windows.Controls.Chart, Telerik.Windows.Controls.Data, Telerik.Windows.Controls.GridView,  Telerik.Windows.Controls.Input,  Telerik.Windows.Controls.Navigation, Telerik.Windows.Data,

Thnaks.

I have a gridview with a databound datetime column in it.

I can change its dataformatstring (or stringformat in binding) so that it shows the date in a short format (dd-mm-yyyy in dutch).

However, when those cells merge, it changes its format to include the time. This means I have a lot of cells that show something like '1-1-2021 00:00:00'.

How can I change that stringformat as well? I could only find a property called contentstringformat, which doesnt do anything.