Hi!
I have a problem, and I have not found the solution yet. I woud like to create a base custom control and use it in another custom control. The base control work fine when I use in a window, but when I use in the other custom control, the binding does not work.
What's wrong with my code?
Code:
Model:
public class ElementModel
{
public string Name { get; set; }
public string FullName { get; set; }
}
The base control:
public class ListControl : Control
{
static ListControl()
{
DefaultStyleKeyProperty.OverrideMetadata(typeof(ListControl), new FrameworkPropertyMetadata(typeof(ListControl)));
}
public ListControl()
{
SetValue(ElementListProperty, new List<ElementModel>());
}
public static readonly DependencyProperty ElementListProperty =
DependencyProperty.Register(
"ElementList",
typeof(List<ElementModel>),
typeof(ListControl),
new FrameworkPropertyMetadata(new List<ElementModel>())
);
public List<ElementModel> ElementList
{
get { return (List<ElementModel>)GetValue(ElementListProperty); }
set { SetValue(ElementListProperty, value); }
}
}
The Wrapper Control:
public class ListWrapper : Control
{
static ListWrapper()
{
DefaultStyleKeyProperty.OverrideMetadata(typeof(ListWrapper), new FrameworkPropertyMetadata(typeof(ListWrapper)));
}
public ListWrapper()
{
SetValue(EMListProperty, new List<ElementModel>());
}
public static readonly DependencyProperty EMListProperty =
DependencyProperty.Register(
"EMList",
typeof(List<ElementModel>),
typeof(ListWrapper),
new FrameworkPropertyMetadata(new List<ElementModel>())
);
public List<ElementModel> EMList
{
get { return (List<ElementModel>)GetValue(EMListProperty); }
set { SetValue(EMListProperty, value); }
}
}
Generic.xaml
<ResourceDictionary
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:UIControl">
<Style TargetType="{x:Type local:ListControl}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type local:ListControl}">
<Border Background="{TemplateBinding Background}"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}">
<ListBox ItemsSource="{TemplateBinding ElementList}">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel>
<Label Content="Name:"/>
<TextBlock Text="{Binding Path=Name}" />
<Label Content="Full name:"/>
<TextBlock Text="{Binding Path=FullName}" />
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="{x:Type local:ListWrapper}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type local:ListWrapper}">
<Border Background="{TemplateBinding Background}"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}">
<local:ListControl ElementList="{TemplateBinding EMList}" />
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
If I put the controls in the window and binding properties, than the ListControl works fine and shows the elements, but the WrapperList does not.
<Window x:Class="MainApplication.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:ui="clr-namespace:UIControl;assembly=UIControl"
Title="Window1" Height="304" Width="628">
<Grid>
<ui:ListControl x:Name="listCtr" ElementList="{Binding Path=EList}" HorizontalAlignment="Left" Width="300" />
<ui:ListWrapper x:Name="listWrp" EMList="{Binding Path=EList}" HorizontalAlignment="Right" Width="300" Background="Gray"/>
</Grid>
Project archive
