DiagramEdgeMappingInfo.FromKey Property

Specifies the name of a data source field that provides an edge’s start node key.

Namespace: DevExpress.Web.ASPxDiagram

Assembly: DevExpress.Web.ASPxDiagram.v24.2.dll

Declaration

C#

[DefaultValue("FromID")]
public string FromKey { get; set; }

VB.NET

<DefaultValue("FromID")>
Public Property FromKey As String

Property Value

Type	Default	Description
String	"FromID"	The field name.

Remarks

Tip

Use the FromKey property to change the start node of an edge after it is bound to a data source (in the EdgeDataBound event).

Online Demo

Diagram - Data Binding

Example

ASPX

<dx:ASPxDiagram ID="Diagram" runat="server" Width="100%" Height="600px" Units="Px"
    NodeDataSourceID="FlowNodeDemoDataSource" EdgeDataSourceID="FlowEdgeDemoDataSource" >
    <SettingsAutoLayout Type="Layered" Orientation="Vertical" />
    <Mappings>
        <Node Key="ID" Type="Type" Width="Width" Height="Height" Left="Left" Locked="Locked" Style="Style" 
        Text="Text" TextStyle="TextStyle" Top="Top" ZIndex="ZIndex"/>
        <Edge Key="ID" FromKey="FromID" ToKey="ToID" Text="Text" FromLineEnd="StartTip" FromPointIndex="StartPoint" 
        LineType="Type" Locked="Locked" Style="Style" TextStyle="TextStyle" ToLineEnd="EndTip" 
        ToPointIndex= "EndPoint" ZIndex="ZIndex"/>
    </Mappings>
</dx:ASPxDiagram>