DiagramContentItem Class

Represents a diagram item with custom content.

Namespace: DevExpress.Xpf.Diagram

Assembly: DevExpress.Xpf.Diagram.v20.1.dll

Declaration

public class DiagramContentItem :
    DiagramItem,
    IDiagramContentItem,
    IDiagramItem
Public Class DiagramContentItem
    Inherits DiagramItem
    Implements IDiagramContentItem,
               IDiagramItem

Remarks

Simple shapes in a DiagramControl display only their content as an editable string. Use the DiagramContentItem class to add custom elements to diagram items. DiagramContentItem has the DiagramContentItem.ContentTemplate property, which can be used to put any elements into the item.

<Style x:Key="formattedTextContentItem" TargetType="dxdiag:DiagramContentItem">
    <Setter Property="ContentTemplate">
        <Setter.Value>
            <DataTemplate>
                ...
            </DataTemplate>
        </Setter.Value>
    </Setter>
</Style>

To register a DiagramContentItem in the toolbox, use the DiagramStencil.RegisterTool method with FactoryItemTool as a parameter:

stencil.RegisterTool(new FactoryItemTool(
    "Calendar",
    () => "Calendar",
    diagram => new DiagramContentItem() {
        CustomStyleId = "formattedTextContentItem"
    },
    new Size(230, 110), true));

After that, register the stencil using DiagramToolboxRegistrator.RegisterStencil.

NOTE

To properly deserialize a DiagramContentItem, it's necessary to set its DiagramItem.CustomStyleId property, which accepts a key of a Style applied to the item.

Examples

The following example shows how to create diagram items that display custom content.

Imports System
Imports System.Collections.Generic
Imports System.Linq
Imports System.Text
Imports System.Windows

Namespace DXDiagram.ContentItem
    Public Class ButtonItemModel
        Public Sub ShowMessage()
            MessageBox.Show("This command has been created by our POCO machanism based on the ShowMessage method")
        End Sub
    End Class
End Namespace
See Also