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>
I would suggest you to check the Missing Controls in the UI article that describes possible reasons why Telerik controls are not displayed in the view.
Oh my god! Thanks you. insert BasedOn Property and resolved this problem.