Binding Errors

[ManniAT]

Hi,

using RadDiagram shows binding errors at debug:

System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for target element. BindingExpression:Path=StartPoint; DataItem=null; target element is 'PathFigure' (HashCode=17749809); target property is 'StartPoint' (type 'Point')
System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for target element. BindingExpression:Path=StartBezierPoint; DataItem=null; target element is 'LineSegment' (HashCode=40121966); target property is 'Point' (type 'Point')
System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for target element. BindingExpression:Path=EndPoint; DataItem=null; target element is 'PathFigure' (HashCode=45256881); target property is 'StartPoint' (type 'Point')
System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for target element. BindingExpression:Path=EndBezierPoint; DataItem=null; target element is 'LineSegment' (HashCode=41585520); target property is 'Point' (type 'Point')

I ran the "custom connector" from Xaml-skd to check that I have no mistake in my application - shows the same errors.

Manfred

[Petar Mladenov]

Hello ManniAT,

This is a bug in our RadDiagram. We updated your telerik account points as a thanks for your cooperation. We also resolved it and the fixed version will be reflected in Q2 2013 SP that is about to come till the end of this month.
 
Regards,
Petar Mladenov
Telerik

[Joel Palmer]

I just encountered these errors again.  I had a working RadDiagram that followed closely to your X example.  However, when I wrapped the diagram and a RadPropertyGrid into your RadDocking control, I began getting these errors:

System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for target element. BindingExpression:Path=StartPoint; DataItem=null; target element is 'PathFigure' (HashCode=26673201); target property is 'StartPoint' (type 'Point')
System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for target element. BindingExpression:Path=StartBezierPoint; DataItem=null; target element is 'LineSegment' (HashCode=13045638); target property is 'Point' (type 'Point')
System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for target element. BindingExpression:Path=EndPoint; DataItem=null; target element is 'PathFigure' (HashCode=50063735); target property is 'StartPoint' (type 'Point')
System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for target element. BindingExpression:Path=EndBezierPoint; DataItem=null; target element is 'LineSegment' (HashCode=28630766); target property is 'Point' (type 'Point')

What Worked:

<Border
            Grid.Row="1"
            Margin="0 4 0 0"
            Background="White"
            BorderBrush="#FFD6D4D4"
            BorderThickness="0 0 1 1">

            <Grid
                Grid.Row="1"
                Margin="0 4 0 0">
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="*"/>
                    <ColumnDefinition Width="250"/>
                </Grid.ColumnDefinitions>

                <Grid
                    Grid.Column="0">
                    <Grid.RowDefinitions>
                        <RowDefinition Height="3*" />
                        <RowDefinition Height="1*" />
                    </Grid.RowDefinitions>

                    <telerik:RadDiagram
                        Grid.Row="0"
                        Margin="5,0,0,0"
                        ScrollViewer.HorizontalScrollBarVisibility="Auto"
                        ScrollViewer.VerticalScrollBarVisibility="Auto"
                        x:Name="diagram"
                        MinWidth="500"
                        BorderThickness="1"
                        IsResizingEnabled="False"
                        IsRotationEnabled="False"
                        ShapeStyleSelector="{StaticResource CustomShapeStyleSelector}"
                        ConnectionStyleSelector="{StaticResource CustomConnectionStyleSelector}"
                        SelectedItem="{Binding SelectedShapeModel, Mode=TwoWay}"
                        primitives:DrawingAdorner.StrokeThickness="3"
                        GraphSource="{Binding GraphSource}">

                        <primitives:ItemInformationAdorner.AdditionalContent>
                            <telerik:SettingsPane Diagram="{Binding ElementName=diagram}"/>
                        </primitives:ItemInformationAdorner.AdditionalContent>
                    </telerik:RadDiagram>

                    <GridSplitter
                        Height="5"
                        Grid.Row="1"
                        HorizontalAlignment="Stretch"
                        VerticalAlignment="Top"
                        IsTabStop="False" />

                    <telerik:RadPropertyGrid
                        x:Name="groupProperties"
                        Grid.Row="1"
                        Margin="0,5,0,0"/>

                </Grid>

                <GridSplitter
                    Width="5"
                    Grid.Column="1"
                    HorizontalAlignment="Left"
                    VerticalAlignment="Stretch"/>

                <Grid
                    Grid.Column="1"
                    Margin="5,0,0,0">

                    <GroupBox
                        Header="User List">

                        <telerik:RadGridView
                        x:Name="peopleGrid"
                        ItemsSource="{Binding People}"
                        AutoGenerateColumns="False"
                        EnableColumnVirtualization="False">

                            <telerik:RadGridView.Columns>

                                <telerik:GridViewImageColumn
                                Header="Image"
                                DataMemberBinding="{Binding Image}"
                                ImageHeight="32"
                                ImageWidth="32"
                                IsGroupable="False"/>

                                <telerik:GridViewDataColumn
                                Header="First Name"
                                DataMemberBinding="{Binding FirstName}"
                                IsGroupable="True"/>

                                <telerik:GridViewDataColumn
                                Header="Last Name"
                                DataMemberBinding="{Binding LastName}"
                                IsGroupable="True"/>

                                <telerik:GridViewDataColumn
                                Header="Job Title"
                                DataMemberBinding="{Binding JobTitle}"
                                IsGroupable="True"/>

                            </telerik:RadGridView.Columns>
                        </telerik:RadGridView>

                    </GroupBox>
                </Grid>
            </Grid>
        </Border>

Generated Errors:

<Border
            Grid.Row="1"
            Margin="0 4 0 0"
            Background="White"
            BorderBrush="#FFD6D4D4"
            BorderThickness="0 0 1 1">

            <telerik:RadDocking>
                <telerik:RadDocking.DocumentHost>

                    <telerik:RadSplitContainer>
                        <telerik:RadPaneGroup>
                            <telerik:RadPane
                                Header="Group Diagram"
                                CanFloat="False">

                                <telerik:RadDiagram
                                    Grid.Row="0"
                                    Margin="5,0,0,0"
                                    ScrollViewer.HorizontalScrollBarVisibility="Auto"
                                    ScrollViewer.VerticalScrollBarVisibility="Auto"
                                    x:Name="diagram"
                                    MinWidth="500"
                                    BorderThickness="1"
                                    IsResizingEnabled="False"
                                    IsRotationEnabled="False"
                                    ShapeStyleSelector="{StaticResource CustomShapeStyleSelector}"
                                    ConnectionStyleSelector="{StaticResource CustomConnectionStyleSelector}"
                                    SelectedItem="{Binding SelectedShapeModel, Mode=TwoWay}"
                                    primitives:DrawingAdorner.StrokeThickness="3"
                                    GraphSource="{Binding GraphSource}">

                                    <primitives:ItemInformationAdorner.AdditionalContent>
                                        <telerik:SettingsPane Diagram="{Binding ElementName=diagram}"/>
                                    </primitives:ItemInformationAdorner.AdditionalContent>
                                </telerik:RadDiagram>

                            </telerik:RadPane>
                        </telerik:RadPaneGroup>
                    </telerik:RadSplitContainer>
                </telerik:RadDocking.DocumentHost>

                <telerik:RadSplitContainer
                    InitialPosition="DockedRight">
                    <telerik:RadPaneGroup>
                        <telerik:RadPane
                            Header="Group Properties">

                            <telerik:RadPropertyGrid
                                x:Name="groupProperties"
                                Grid.Row="1"
                                Margin="0,5,0,0"/>

                        </telerik:RadPane>

                        <telerik:RadPane
                            Header="People">

                            <GroupBox
                                Header="User List">

                                <telerik:RadGridView
                                    x:Name="peopleGrid"
                                    ItemsSource="{Binding People}"
                                    AutoGenerateColumns="False"
                                    EnableColumnVirtualization="False">

                                    <telerik:RadGridView.Columns>

                                        <telerik:GridViewImageColumn
                                            Header="Image"
                                            DataMemberBinding="{Binding Image}"
                                            ImageHeight="32"
                                            ImageWidth="32"
                                            IsGroupable="False"/>

                                        <telerik:GridViewDataColumn
                                            Header="First Name"
                                            DataMemberBinding="{Binding Person.FirstName}"
                                            IsGroupable="True"/>

                                        <telerik:GridViewDataColumn
                                            Header="Last Name"
                                            DataMemberBinding="{Binding Person.LastName}"
                                            IsGroupable="True"/>

                                        <telerik:GridViewDataColumn
                                            Header="Domain"
                                            DataMemberBinding="{Binding Person.DomainName}"
                                            IsGroupable="True"/>

                                        <telerik:GridViewDataColumn
                                            Header="User Name"
                                            DataMemberBinding="{Binding Person.LoginName}"
                                            IsGroupable="True"/>
                                    </telerik:RadGridView.Columns>
                                </telerik:RadGridView>

                            </GroupBox>
                        </telerik:RadPane>
                    </telerik:RadPaneGroup>

                </telerik:RadSplitContainer>

            </telerik:RadDocking>
        </Border>

[Joel Palmer]

For my above post, I am using Version 2014.1.331.40.  Path:

C:\Program Files (x86)\Telerik\UI for WPF Q1 2014\Binaries\WPF40\Telerik.Windows.Controls.Docking.dll

[Joel Palmer]

X Example referred to:

 StyleSelectors_WPF which uses a ModelView to populate the Grid and Node/Link StyleSelectors.

[Petar Mladenov]

Hello Joel,

Please excuse me if my previous post have mislead you. Actually this issue is still present and it is not fixed in the RadDiagram. It is tightly coupled with the way how and when bindings are evaluated when the template is applied on the RadDiagramShapes and RadDiagramConnections. Currently we are not aware of a possible way to fix this output error or workaround it. 

Regards,
Petar Mladenov
Telerik