GanttTaskMappingInfo.ParentKey Property

Specifies the name of the data field that contains information on the task’s parent ID.

Namespace: DevExpress.Web.ASPxGantt

Assembly: DevExpress.Web.ASPxGantt.v25.1.dll

NuGet Package: DevExpress.Web

Declaration

C#

[DefaultValue("ParentID")]
public string ParentKey { get; set; }

VB.NET

<DefaultValue("ParentID")>
Public Property ParentKey As String

Property Value

Type	Default	Description
String	"ParentID"	A data field name.

Remarks

ASPX

<dx:ASPxGantt ID="Gantt" runat="server" Width="100%" KeyFieldName="ID" ParentFieldName="ParentID" ...>
    <Mappings>
        <Task Key="ID" ParentKey="ParentID" Title="Subject" Start="StartDate" End="EndDate" Progress="PercentComplete" />
        <%-- ... --%>
    </Mappings>
    <%-- ... --%>
</dx:ASPxGantt>

Run Demo: ASPxGantt - Data Binding and Editing Run Demo: MVC Gantt - Data Binding and Editing

The Gantt control does not show the tasks whose parents are not present in the data source. To display a root task (without a parent), set its parent key value to one of the following values:

• String.Empty
• Guid.Empty
• null