Binding one dependency property to another
- by Gregory Dodd
I have a custom Tab Control that I have created, but I am having an issue. I have an Editable TextBox as part of the custom TabControl View.
<Controls:EditableTextControl x:Name="PageTypeName"
Style="{StaticResource ResourceKey={x:Type Controls:EditableTextControl}}" Grid.Row="0" TabIndex="0"
Uid="0"
AutomationProperties.AutomationId="PageTypeNameTextBox"
AutomationProperties.Name="PageTypeName"
Visibility="{Binding ElementName=PageTabControl,Path=ShowPageType}">
<Controls:EditableTextControl.ContextMenu>
<ContextMenu x:Name="TabContextMenu">
<MenuItem Header="Rename Page Type" Command="{Binding Path=PlacementTarget.EnterEditMode, RelativeSource={RelativeSource AncestorType=ContextMenu}}"
AutomationProperties.AutomationId="RenamePageTypeMenuItem"
AutomationProperties.Name="RenamePageType"/>
<MenuItem Header="Delete Page Type" Command="{Binding Path=PageTypeDeletedCommand}"
AutomationProperties.AutomationId="DeletePageTypeMenuItem"
AutomationProperties.Name="DeletePageType"/>
</ContextMenu>
</Controls:EditableTextControl.ContextMenu>
<Controls:EditableTextControl.Content>
<!--<Binding Path="CurrentPageTypeViewModel.Name" Mode="TwoWay"/>-->
<Binding ElementName="PageTabControl" Path="CurrentPageTypeName" Mode ="TwoWay"/>
</Controls:EditableTextControl.Content>
</Controls:EditableTextControl>
In the Content section I am binding to a Dependency Prop called CurrentPageTypeName. This Depedency prop is part of this custom Tab Control.
public static DependencyProperty CurrentPageTypeNameProperty = DependencyProperty.Register("CurrentPageTypeName", typeof(object), typeof(TabControlView));
public object CurrentPageTypeName
{
get { return GetValue(CurrentPageTypeNameProperty) as object; }
set { SetValue(CurrentPageTypeNameProperty, value); }
}
In another view, where I am using the custom TabControl I then bind my property, with the actual name value, to CurrentPageTypeName property as seen below:
<Views:TabControlView Grid.Row="0" Name="RunPageTabControl"
TabItemsSource="{Binding RunPageTypeViewModels}"
SelectedTab="{Binding Converter={StaticResource debugConverter}}"
CurrentPageTypeName="{Binding Path=RunPageName, Mode=TwoWay}"
TabContentTemplateSelector="{StaticResource tabItemTemplateSelector}"
SelectedIndex="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type UserControl}}, Path=DataContext.SelectedTabIndex}"
ShowPageType="Hidden" >
<!--<Views:TabControlView.TabContentTemplate>
<DataTemplate DataType="{x:Type ViewModels:RunPageTypeViewModel}">
<RunViews:RunPageTypeView/>
</DataTemplate>
</Views:TabControlView.TabContentTemplate>-->
</Views:TabControlView>
My problem is that nothing seems to be happening. It is grabbing its Content from the Itemsource, and not from my chained Dependency props. Is what I am trying even possible? If so, what have I done wrong.
Thanks for looking.
