Questions on UI for WPF Forum

1 answer

171 views

RadComboBox MultipleSelectionBoxTempalte converter per item

I have a RadComboBox  thats bind to an Enum list like so


<telerik:RadComboBox HorizontalAligment="Streatch"
                                        x:Nmae="RadComboBox"
                                         HorizontalAligmentContent="Left"
                                         Margin ="0 0 10 0"
                                         StayOpenOnEdit="True"
                                         AllowMultipleSelection= "True"
                                         ItemSource="{Binding SignalTypes}"
                                         behaviors:SelectedItemsBinding.SourceList = "{Binding SelectedSignalTypes}"
                                         BorderThickness ="1"
                                         VerticalContentAligment="Center"
                                         CanAutocompleteSelectItems="True"
                                         EmptyTexy =" Select Signal Type"
                                        TextSearchMode="Contains"
                                           >
    <telerik:RadComboBox.MultipleSelectionBoxTemplate>
         <DataTemplate>
             <TextBlock Text="{Binding ElementName=RadComboBox , Path=SelectionBoxItem, Converter={StaticResource EnumValueToDisplayTextConverter}"/>
         </DataTemplate>
     </telerik:RadComboBox.MultipleSelectionBoxTemplate>
</telerik:RadComboBox>

Where SourceList is MultiSelector and EnumValueToDisplayTextConverter is a IValueConverter which convert from Enum to its corresponding DescriptonAttribute
My Problem is that in the converter value I'm a getting a string list, separated by the separator (i.e item1, item2, etc.)
and im excepting 1 item inside my convertor, therefore my converter failed and I don't see any items at all at SelectionBox
i tried to use ItemsControl inside the template but for some reason i was getting 1 letter(char) of the Enum each time

P.S
I know i can create a new convertor and solve the problem, but i prefer not to

P.S2
I cant change my convertor

ComboBox

answered on 20 Apr 2023

1 answer

131 views

RadComboBox Flicker between two items when scrolling on Windows 11 Theme

Our QA Team identified a bug and we were able to replicated on Telerik Control Example Application. we have being trying to fixit but so far we have not found a solution to the problem.

Replication Steps(please see video and gif attached):

Open a RadComboBox
1. RadComboBox with many items (enough items to trigger the scrollbar or set a max width to trigger it)
2. RadComboBox using Windows 11 Theme
Place the mouse between two items
Scroll without moving the mouse

Is there any way of fixing this from our end?

Kind regard

Julio

ComboBox

answered on 24 Mar 2023

2 answers

126 views

Adding a name with underscore to a list of RadMenuGroupItem's itemsSource

Hey, I have using your control RadMenuGroupItem with ItemsSource that is Observable Collection of string. I noticed that for name with underscore in them, the underscore is removed from the name. Here an example:

telerik_123 will turn to telerik123

I use the same ItemsSource in a RadComboBox and in there I don't have this issue.

What can I do to solve this?

Sincerely, Omer

ComboBox

answered on 31 Jan 2023

1 answer

339 views

RadMultiColumnComboBox show selected item as a combination of multiple properties in a class

I have the following class

Class My Class

Class MyClass()
{
   public int Var1 {get; set; }
   public int Var2 {get; set; }
}

i want the selected item to show {var1}/{var2}
for now im doing (for now) is

DisplayMemberPath = "Var1"

but because its a String and a Dependency property i cannot attach a MultiBinding
and RadMultiColumnComboBox does not have itemTemplate property
how can i achieve it

P.S
I want the same behavior for the tooltip

p.s 2
i also want to center the selected text but it seems HorizontalContentAlignment is not working

Thanks in advance

answered on 30 Jan 2023

0 answers

125 views

How can set elements visibility?

When Program start, RadComboBox is Collapsed. 'cbType' RadComboBox item select, not visible. Why RadComboBox not visible?

<Control.Template>
	<ControlTemplate TargetType="{x:Type Mods_UiMod_FrameControls:UiFrameContent}">
		<StackPanel x:Name="Part_MainStack" DataContext="{Binding}">
			<telerik:RadComboBox Grid.Row="3"
								 Grid.Column="1"
								 Height="20"
								 Margin="5 0 5 0"
								 DisplayMemberPath="CODE_NAME"
								 FontSize="11"
								 ItemsSource="{Binding Source=
								 {x:Static Public_Code:CommonCodes.FormTypes}}"
								 SelectedIndex="{Binding SelectedIndexForm,
								 UpdateSourceTrigger=PropertyChanged}"
								 SelectedValuePath="CODE_ID"
								 SelectionBoxTemplate="{StaticResource CodeCBTemplate}"  
								 x:Name="cbType"/>
			<Label Grid.Row="4"
				   Grid.Column="0"
				   Content="Create Month"
				   FontSize="11"
				   Foreground="White" Name="lbCreateMonth">
				   <Label.Style>
					   <Style TargetType="Label">
						   <Setter Property="Visibility" Value="Collapsed"/>
						   <Style.Triggers>
								<DataTrigger Binding="{Binding ElementName=cbType, Path=SelectedIndex}" Value="0">
									<Setter Property="Visibility" Value="Visible"/>
								</DataTrigger>
						   </Style.Triggers>
					   </Style>
				   </Label.Style>
			</Label>
			<telerik:RadComboBox Grid.Row="4"
								 Grid.Column="1"
								 Height="20"
								 Margin="5 0 5 0"
								 DisplayMemberPath="CODE_NAME"
								 FontSize="11"
								 ItemsSource="{Binding Source={x:Static Public_Code:CommonCodes.TimeMonthCodes}}"
								 SelectedIndex="{Binding SelectedIndexCreateMonth,
														 UpdateSourceTrigger=PropertyChanged}"
								 SelectedValuePath="CODE_ID"
								 SelectionBoxTemplate="{StaticResource CodeCBTemplate}" Name="cbCreateMonth">
				<telerik:RadComboBox.Style>
					<Style TargetType="{x:Type telerik:RadComboBox}">
						<Setter Property="Visibility" Value="Collapsed"/>
						<Style.Triggers>
							<DataTrigger Binding="{Binding ElementName=cbType, Path=SelectedIndex}" Value="0">
								<Setter Property="Visibility" Value="Visible"/>
							</DataTrigger>
						</Style.Triggers>
					</Style>
				</telerik:RadComboBox.Style>
			</telerik:RadComboBox>
		<StackPanel x:Name="Part_MainStack" DataContext="{Binding}">
	</ControlTemplate>
</Control.Template>

ComboBox

updated question on 22 Dec 2022

1 answer

248 views

XAML designer is busy when I click on a RadComboBox

Hi

I'm getting error in the VS2022 designer when I click on a RadComboBox.
It shows a busy cursor and then a dialog with the message "XAML designer is busy"

When I cancel the dialog it shows a message that an unhandled exception has occurred with the option to reload the designer.
The only way to make the RadComboBox clickable is to switch on "only display platform controls"
Then it shows a generic looking control in the place of the RadComboBox

This is happening on version 2022.3.1109 but was also happening on 2022.2.621

Is this something you can fix? or is the problem something that you have to wait on Microsoft for

Thanks
Paul Mc

ComboBox

answered on 16 Nov 2022

1 answer

241 views

WPF : GridViewComboBoxColumn not showing dropdown until click

I'm trying to make my gridview box column show the dropdown tick without having to click

<telerik:GridViewComboBoxColumn Header="Active" DataMemberBinding="{Binding EnableCase}" UniqueName="Active" ItemsSource="{Binding Activeops}" DisplayMemberPath="Describe" SelectedValueMemberPath="ID" />

The Dropdown only shows up when i click on the header

ComboBox

General Discussions

GridView

answered on 08 Nov 2022

1 answer

227 views

How to customize Telerik RadComboBox in RadGridView (GridViewComboBoxColumn) Height in WPF?

Is it possible to reduce the Telerik RadComboBox in RadGridView (GridViewComboBoxColumn) Height?

We have an issue in our project, we cannot reduce the RadGridView RowHeight.

For your reference, in the below screenshot, Column3 is Telerik RadComboBox in RadGridView (GridViewComboBoxColumn).

After adding the Column3 (Telerik RadComboBox in RadGridView (GridViewComboBoxColumn)), RowHeight becomes larger.

> Can you please suggest how to reduce RadComboBox height in RadGridView (GridViewComboBoxColumn)?

Thanks in advance.

ComboBox

GridView

updated question on 31 Oct 2022

0 answers

157 views

I want to customize Combobox dropdown button(arrow goes up or down)

Hi,

I'm using a customized style for RadCombobox.

The problem is, I found it impossible to reverse the dropdown button(arrow) when it is clicked.

I want the arrow to go up when the combobox expands and go down when the combobox collapses.

Can Anyone give me an example code of this?

Buttons

ComboBox

Styling

asked on 27 Oct 2022

2 answers

110 views

Fulltextsearch behavior in custom Colums

We have a RadGridView which contains a combobox, bound to a collection of custom objects.

At the moment the full text search does not take the combobox items into consideration when searching.

How can i tell the fulltextsearch to search in the title of the, in the combobox chosen, object?

ComboBox

GridView

updated answer on 19 Oct 2022