DiagramNode Class

A diagram node.

Namespace: DevExpress.Web.ASPxDiagram

Assembly: DevExpress.Web.ASPxDiagram.v20.2.dll

NuGet Package: DevExpress.Web

Declaration

C#

public class DiagramNode :
    DiagramItem

VB.NET

Public Class DiagramNode
    Inherits DiagramItem

Related API Members

The following members return DiagramNode objects:

• DiagramNodeEventArgs.Node

Remarks

When the ASPxDiagram control is bound to a data source (NodeDataSource), the control creates a DiagramNode object and raises the NodeDataBound event for every data item in the source.

You can access the processed DiagramNode object via the event argument’s Node property. Use the object’s properties to customize the node before it is finally rendered.

ASPX

<dx:ASPxDiagram ID="Diagram" runat="server" Width="100%" Height="600px"
    NodeDataSourceID="DepartmentDemoDataSource" OnNodeDataBound="Diagram_NodeDataBound" >
    <Mappings>
        <Node Key="ID" ParentKey="ParentID" Text="DepartmentName" />
    </Mappings>
    <SettingsToolbox>
        <Groups>
            <dx:DiagramToolboxGroup CustomCategoryName="Departments" DisplayMode="Texts" />
        </Groups>
    </SettingsToolbox>
</dx:ASPxDiagram>

C#

protected void Page_Load(object sender, EventArgs e) {
    if(!IsPostBack) {
        Diagram.CustomShapes.AddRange(GetDepartmentShapes());
    }
}
static IEnumerable<DiagramCustomShape> GetDepartmentShapes() {
    return DepartmentDataProvider.GetDepartments().Select(d =>
        new DiagramCustomShape {
            Category = "Departments",
            DefaultText = d.DepartmentName,
            Type = "dep" + d.ID,
            BaseType = DiagramShapeType.Rectangle,
        }
    );
}
protected void Diagram_NodeDataBound(object sender, DiagramNodeEventArgs e) {
    e.Node.Type = "dep" + e.Node.Key;
}

VB.NET

Class SurroundingClass
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
        If Not IsPostBack Then
            Diagram.CustomShapes.AddRange(GetDepartmentShapes())
        End If
    End Sub

    Private Shared Function GetDepartmentShapes() As IEnumerable(Of DiagramCustomShape)
        Return DepartmentDataProvider.GetDepartments().[Select](Function(d) New DiagramCustomShape With {
            .Category = "Departments",
            .DefaultText = d.DepartmentName,
            .Type = "dep" & d.ID,
            .BaseType = DiagramShapeType.Rectangle
        })
    End Function

    Protected Sub Diagram_NodeDataBound(ByVal sender As Object, ByVal e As DiagramNodeEventArgs)
        e.Node.Type = "dep" & e.Node.Key
    End Sub
End Class

Inheritance

Object

DiagramItem

DiagramNode