Org Chart Expand / Collapse doesn't work with no absolute hierarchy

[JP]

Hi,

I am trying to use Expand / Collapse feature of Org Chart control. My data source not necessarily have absolute hierarchy as shown in example ( Record with id 1 and 7 doesn't have manager id).

My data binds with the control perfectly, but the expand / collapse feature doesn't work.

Protected Sub Test_TestOrgChart_Load(sender As Object, e As System.EventArgs) Handles Me.Load
        BindOrgChart()
    End Sub

    Private Sub BindOrgChart(Optional ByVal ExpandAll As Boolean = True)

        Dim employees = CreateEmployees()

        RadOrgChartEmployees.DataFieldID = "EmployeeID"
        RadOrgChartEmployees.DataTextField = "EmployeeName"
        RadOrgChartEmployees.DataFieldParentID = "ManagerID"
        RadOrgChartEmployees.DataSource = employees

        RadOrgChartEmployees.DataBind()


        If ExpandAll Then
            RadOrgChartEmployees.ExpandAllNodes()
        Else
            RadOrgChartEmployees.CollapseAllNodes()
        End If
    End Sub

    Private Function CreateEmployees() As DataTable
        Dim employees = New DataTable()

        employees.Columns.Add("EmployeeID")
        employees.Columns.Add("ManagerID")
        employees.Columns.Add("EmployeeName")
        employees.Columns.Add("JobTitle")

        employees.Rows.Add(New String() {"1", Nothing, "Emp CEO", "CE0"})
        employees.Rows.Add(New String() {"2", "1", "Emp President BSS", "President BSS"})
        employees.Rows.Add(New String() {"3", "1", "Emp COO", "COO"})
        employees.Rows.Add(New String() {"4", "2", "Emp VP ST", "VP Software Tech"})
        employees.Rows.Add(New String() {"5", "2", "EMP Director SD", "Director Software Development"})
        employees.Rows.Add(New String() {"6", "5", "EMP Developer", "Developer"})

        employees.Rows.Add(New String() {"7", Nothing, "EMP CFO", "CFO"})
        employees.Rows.Add(New String() {"8", "7", "EMP President IT", "President IT"})

        Return employees

    End Function

[Plamen]

Hi Jean-Pierre,

 
The issue is observed because by design RadOrgChart does not support multiple root items and multiple parents  because it illustrates a strongly hierarchical relationship. In your particular case because of the second root there is a javascript error and that is why the control can not work properly.

Hope this will explain the issue.

Kind regards,
Plamen
the Telerik team