Bad experince with RadComboBox and IsEditable

[Daniel]

Hello,
i have some trouble with the RadComboBox control.

Window is Loaded, see Screenshot 001
I clicked in RadComboBox, see Screenshot 002
I typed in "14" and pressed Enter, see Screenshot 003

I clicked again in RadComboBox and I have severell problems. (see Screenshot 004)

• Marked Text cannot be overriden
• DropDown doesn't show up, even if I clicked clear
• No caret appears

The Code is very minimalistic
<Window x:Class="RadComboBoxSample.MainWindow"
        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"
        Title="MainWindow" Height="220" Width="220">
    <Window.Resources>
        <Style x:Key="RadComboBoxContentUserControlStyle" TargetType="telerik:RadComboBox">
            <Setter Property="Margin" Value="10" />
            <Setter Property="Padding" Value="10" />
            <Setter Property="HorizontalAlignment" Value="Stretch" />
            <Setter Property="IsReadOnly" Value="True" />
            <Setter Property="IsEditable" Value="True" />
            <Setter Property="IsFilteringEnabled" Value="True" />
            <Setter Property="CanAutocompleteSelectItems" Value="True" />
            <Setter Property="CanKeyboardNavigationSelectItems" Value="True" />
            <Setter Property="OpenDropDownOnFocus" Value="True" />
            <Setter Property="TextSearchMode" Value="Contains" />
            <Setter Property="ClearSelectionButtonVisibility" Value="Visible" />
            <Setter Property="ClearSelectionButtonContent" Value="Clear" />
            <Setter Property="EmptyText" Value="Please select" />
        </Style>
    </Window.Resources>
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto" />
            <RowDefinition />
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto" MinWidth="200" />
            <ColumnDefinition />
        </Grid.ColumnDefinitions>
        <telerik:RadComboBox Grid.Column="0" Grid.Row="0" Style="{StaticResource RadComboBoxContentUserControlStyle}">
            <telerik:RadComboBoxItem Content="14 - Car" />
            <telerik:RadComboBoxItem Content="15 - Airplane" />
            <telerik:RadComboBoxItem Content="16 - Boat" />
            <telerik:RadComboBoxItem Content="17 - Bike" />
        </telerik:RadComboBox>
    </Grid>
</Window>

[Masha]

Hello Daniel,

Please try to remove IsReadOnly property of RadComboBoxContentUserControlStyle and everything should work as expected. That is the main reason that the caret brush is not appear and the text can not be overridden.

I hope this helps.

Regards,
Masha
Telerik

 

 

[Daniel]

thx for your reply.

But there is still the problem, that, once selected, the DropDown only appears if focused another element.

[Kalin]

Hello Daniel,

I've tested the provided sample and after removing the IsReadOnly property as Masha has suggested our previous post everything works as expected. I have attached a video of my tests - check it and let me know there something I'm missing here. However I assume the issues you face are caused by some other style affecting the elements in the ComboBox - please try to isolate the ComboBox in a separate project to see whether the issues still exist.

Hope this helps.

Regards,
Kalin
Telerik