Questions considering DiagramConnectionElement

Hi guys,

I have a couple of questions considering DiagramConnectionElement.

First of all - is it possible to make the Content of DiagramConnectionElement 'breakable' with 'enter' button, like it is in DiagramNodeElements? And maybe also selectable with ctrl+A shortcut?

Socondly - could you enable to change StrokeDashArray of connections without applying custom styles to them? I tried to apply my own style to connections but I couldn't do it because my application was throwing an exception beacuse of this xaml code:

<ContentPresenter Name="DataPresenter" Content="{Binding Connection, RelativeSource={RelativeSource TemplatedParent}}" ContentTemplateSelector="{TemplateBinding ConnectionContentTemplateSelector}">
        <ContentPresenter.RenderTransform>
            <TransformGroup>
                <MultiBinding Converter="{StaticResource ConnectionContentTransformConverter}">
                    <Binding Path="FromConnectionPoint.Position" RelativeSource="{RelativeSource TemplatedParent}" />
                    <Binding Path="FromConnectionPoint.Edge" RelativeSource="{RelativeSource TemplatedParent}" />
                    <Binding Path="ActualWidth" Mode="OneWay" ElementName="DataPresenter" />
                    <Binding Path="ActualHeight" Mode="OneWay" ElementName="DataPresenter" />
                </MultiBinding>
            </TransformGroup>
        </ContentPresenter.RenderTransform>
 </ContentPresenter>

Without this part of the code my appliaction works but Content of DiagramConnectionElements is not placed where it should be.

I would really appreciate your help on this.

Cheers,

Przemo

Hello

I have attached a sample that demonstrates how to do all these things.

You can change the stroke dash array by providing a custom connection style without touching the control template. On line 13 of Window1.xaml is a style that sets the stroke dash array for a path. Line 34 has the custom connection style which simple sets the PathStyle property to be the custom path style. A FixedStyleSelector and a DiagramFormatter are then used to apply the custom connection style as normal. The generic connection style takes care of all the control template parts.

Lines 43 to 77 has a custom template with a text box for the connection content. On line 61 I have set the AcceptsReturn property to true to allow the 'enter' key to put a line break in the content. Then this custom connection template is applied by setting the ConnectionContentTemplateSelector property of the DiagramFormatter.

Let us know how it goes.
 - Jason 

Everything works prefectly now.

Thank you.