I have a Usercontrol: SnazzyForm, which in addition to a couple of borders and and a header area and whatnot, also has a Content Presenter which under .NET Framework 3.5 presented content passed to it in other forms that used the control just fine.
However after moving the project to 4.0 I am greeted with "Cannot add content to object of type" blah blah blah.
The codebehind for the control is thus:
Imports System
Imports System.IO
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Data
Imports System.Windows.Media
Imports System.Windows.Media.Animation
Imports System.ComponentModel
Public Class SnazzyForm
Inherits ContentControl
Public Shared TitleProperty As DependencyProperty = DependencyProperty.Register("Title", GetType(String), GetType(SnazzyForm))
<Description("Title to display"), _
Category("Custom")> _
Public Property Title() As String
Get
Return CType(GetValue(TitleProperty), String)
End Get
Set(ByVal value As String)
SetValue(TitleProperty, value)
End Set
End Property
Shared Sub New()
' Insert code required on object creation below this point.
DefaultStyleKeyProperty.OverrideMetadata(GetType(SnazzyForm), New FrameworkPropertyMetadata(GetType(SnazzyForm)))
End Sub
End Class
The template in the resourcedictionary that governs this control is thus:
<Style TargetType="{x:Type local:SnazzyForm}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type local:SnazzyForm}">
<ControlTemplate.Resources>
<Style TargetType="{x:Type Border}" x:Key="formOuterBorderStyle">
<Setter Property="Margin" Value="22,22,22,3" />
<Setter Property="Padding" Value="0" />
<Setter Property="BorderBrush" Value="{StaticResource BrushBorder}" />
<Setter Property="BorderThickness" Value="3" />
<Setter Property="Background" Value="{StaticResource BrushBackgroundDark}" />
<Setter Property="CornerRadius" Value="20,20,0,0" />
</Style>
<Style TargetType="{x:Type TextBlock}" x:Key="formTitleStyle">
<Setter Property="Foreground" Value="{StaticResource BrushWhiteSmoke}" />
<Setter Property="FontFamily" Value="Verdana" />
<Setter Property="FontSize" Value="16" />
<Setter Property="Padding" Value="11,7,7,7" />
<Setter Property="VerticalAlignment" Value="Stretch" />
<Setter Property="HorizontalAlignment" Value="Stretch" />
</Style>
<Style TargetType="{x:Type TextBlock}" x:Key="formBreadcrumbStyle">
<Setter Property="Foreground" Value="{StaticResource BrushWhiteSmoke}" />
<Setter Property="FontFamily" Value="Verdana" />
<Setter Property="FontSize" Value="11" />
<Setter Property="Padding" Value="7" />
<Setter Property="VerticalAlignment" Value="Stretch" />
<Setter Property="HorizontalAlignment" Value="Stretch" />
</Style>
<Style TargetType="{x:Type Rectangle}" x:Key="formBackgroundRectangleStyle">
<Setter Property="Fill" Value="{StaticResource BrushABCLight}" />
</Style>
<Style TargetType="{x:Type Border}" x:Key="formTitleBorderStyle">
<Setter Property="BorderBrush" Value="{StaticResource BrushBlack}" />
<Setter Property="BorderThickness" Value="0,0,0,2" />
</Style>
</ControlTemplate.Resources>
<AdornerDecorator d:DesignWidth="640" d:DesignHeight="480">
<Grid Width="Auto" Height="Auto">
<Grid.RowDefinitions>
<RowDefinition Height="40"/>
<RowDefinition Height="40"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="40"/>
</Grid.ColumnDefinitions>
<TextBlock HorizontalAlignment="Left" Margin="0" VerticalAlignment="Top" FontFamily="Arial" FontSize="18.667" Foreground="#FFE0E0E0" Text="{TemplateBinding Title}" TextWrapping="Wrap" Panel.ZIndex="2" Visibility="Collapsed"/>
<Path Fill="Black" Stretch="Fill" Stroke="{x:Null}" Margin="0" VerticalAlignment="Stretch" Height="Auto" Grid.Column="1" Grid.Row="0" Data="M0.5,0.5 L39.5,39.5 0.5,39.5 z"/>
<Border Background="Black" Margin="0" VerticalAlignment="Stretch" Height="Auto" Grid.Row="0" CornerRadius="10,0,0,0"/>
<!-- <Rectangle Fill="Black" Stroke="Black" Margin="0" VerticalAlignment="Stretch" Height="Auto" Grid.Row="0"/> -->
<Rectangle Stroke="{x:Null}" Margin="0" Height="Auto" Opacity="0.5" Grid.ColumnSpan="2" Grid.Row="3" Grid.RowSpan="1">
<Rectangle.Fill>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FF222222" Offset="0"/>
<GradientStop Color="#FFB3B3B3" Offset="1"/>
</LinearGradientBrush>
</Rectangle.Fill>
</Rectangle>
<Rectangle Fill="Black" Stroke="Black" Margin="0" Grid.ColumnSpan="2" Grid.Row="1"/>
<Rectangle Fill="{TemplateBinding Background}" Stroke="Black" Margin="0" Height="Auto" Panel.ZIndex="-7" Grid.ColumnSpan="2" Grid.Row="2" Grid.RowSpan="1"/>
<Border x:Name="bdr" Style="{StaticResource formOuterBorderStyle}" Margin="0" Grid.ColumnSpan="2" Grid.RowSpan="3" d:LayoutOverrides="Width, Height" d:IsHidden="True" Visibility="Collapsed"/>
<Grid Margin="3" Grid.ColumnSpan="2" Grid.RowSpan="3">
<Grid.RowDefinitions>
<RowDefinition Height="Auto" MinHeight="77" />
<RowDefinition MinHeight="400" />
</Grid.RowDefinitions>
<Border Style="{StaticResource formTitleBorderStyle}" BorderBrush="{x:Null}">
<StackPanel Margin="0">
<TextBlock Text="{Binding ViewModelFriendlyName}" Style="{StaticResource formTitleStyle}" />
<TextBlock Margin="11,0,0,0" Text="{Binding BreadcrumbTrail}" Style="{StaticResource formBreadcrumbStyle}" />
</StackPanel>
</Border>
<Rectangle Grid.Row="1" Style="{StaticResource formBackgroundRectangleStyle}" Visibility="Collapsed" />
<!--Put the form below here-->
<ContentPresenter x:Name="ContentPresenterX" Grid.Row="1" Margin="0" />
<!--Put the form above here-->
</Grid>
</Grid>
</AdornerDecorator>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
I guess I really just want to know why I now have to tell the control to use the contentpresenter to present the content, when previously it know that is what I wanted, and also how I do it.
Any thoughts?
Cory
Added Content={TemplateBinding Property=Content} to ContentPresenter.
MSDN Forum post regarding this issue suggested adding the ContentPropertyAttribute setter to the controls codebehind, but I could not get that to work.
Cory