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Expand/Collapse

Expand/Collapse the RadOrgChart hierarchical tree

RadOrgChart supports Expand/Collapse of the RadOrgChart hierarchical tree. The functionality could be enabled by setting EnableCollapsing property to true. DataCollapsedField property gets or sets the data field holding the Collapsed property for the currently bound Node. You can set Node's Expand/Collapse state by setting Collapsed property.

Expand/Collapse

To further customize the functionality of the RadOrgChart control there are also several server-side methods:

  • CollapseAllNodes()– collapse all nodes in the RadOrgChart

  • CollapseNodes() - collapse nodes in the RadOrgChart by criteria (lambda)

  • ExpandAllNodes() – expand all nodes in the RadOrgChart

  • ExpandNodes() - expand nodes in the RadOrgChart by criteria (lambda)

Here is an example how to enable the Expand/Collapse functionality from the markup.

<telerik:RadOrgChart RenderMode="Lightweight" ID="RadOrgChart1" runat="server" EnableCollapsing="true">
    <Nodes>
        <telerik:OrgChartNode>
            <GroupItems>
                <telerik:OrgChartGroupItem Text="Item1">
                </telerik:OrgChartGroupItem>
                <telerik:OrgChartGroupItem Text="Item1">
                </telerik:OrgChartGroupItem>
            </GroupItems>
            <Nodes>
                <telerik:OrgChartNode>
                    <GroupItems>
                        <telerik:OrgChartGroupItem Text="Item1">
                        </telerik:OrgChartGroupItem>
                        <telerik:OrgChartGroupItem Text="Item1">
                        </telerik:OrgChartGroupItem>
                    </GroupItems>
                </telerik:OrgChartNode>
                <telerik:OrgChartNode Collapsed="true">
                    <GroupItems>
                        <telerik:OrgChartGroupItem Text="item1">
                        </telerik:OrgChartGroupItem>
                    </GroupItems>
                    <Nodes>
                        <telerik:OrgChartNode>
                            <GroupItems>
                                <telerik:OrgChartGroupItem Text="Item1">
                                </telerik:OrgChartGroupItem>
                                <telerik:OrgChartGroupItem Text="Item1">
                                </telerik:OrgChartGroupItem>
                            </GroupItems>
                        </telerik:OrgChartNode>
                    </Nodes>
                </telerik:OrgChartNode>
            </Nodes>
        </telerik:OrgChartNode>
    </Nodes>
</telerik:RadOrgChart>

Bind Node's Collapsed property in simple binding scenario:

<telerik:RadOrgChart RenderMode="Lightweight" runat="server" ID="RadOrgChart2" EnableCollapsing="true">
</telerik:RadOrgChart>
var nodes = new DataTable();
nodes.Columns.Add("ID");
nodes.Columns.Add("ParentID");
nodes.Columns.Add("Collapsed");
nodes.Rows.Add(new string[] { "1", null, "1" });
nodes.Rows.Add(new string[] { "2", "1", "0" });
nodes.Rows.Add(new string[] { "3", "2", "1" });
nodes.Rows.Add(new string[] { "4", "3", "0" });

RadOrgChart2.DataFieldID = "ID";
RadOrgChart2.DataFieldParentID = "ParentID";
RadOrgChart2.DataCollapsedField = "Collapsed";

RadOrgChart2.DataSource = nodes;
RadOrgChart2.DataBind();

Dim nodes = New DataTable()
nodes.Columns.Add("ID")
nodes.Columns.Add("ParentID")
nodes.Columns.Add("Collapsed")
nodes.Rows.Add(New String() {"1", Nothing, "1"})
nodes.Rows.Add(New String() {"2", "1", "0"})
nodes.Rows.Add(New String() {"3", "2", "1"})
nodes.Rows.Add(New String() {"4", "3", "0"})

RadOrgChart2.DataFieldID = "ID"
RadOrgChart2.DataFieldParentID = "ParentID"
RadOrgChart2.DataCollapsedField = "Collapsed"

RadOrgChart2.DataSource = nodes
RadOrgChart2.DataBind()

'#End Region

'#Region "expandcollapse_groupenabled_binding_1"

Dim employees = New DataTable()
employees.Columns.Add("EmployeeID")
employees.Columns.Add("TeamID")
employees.Columns.Add("Name")
employees.Rows.Add(New String() {"1", "1", "Ken"})
employees.Rows.Add(New String() {"2", "2", "Arnold"})
employees.Rows.Add(New String() {"3", "3", "Tim"})
employees.Rows.Add(New String() {"4", "4", "David"})

Dim teams = New DataTable()
teams.Columns.Add("TeamID")
teams.Columns.Add("ReportsTo")
teams.Columns.Add("Team")
teams.Columns.Add("Collapsed")
teams.Rows.Add(New String() {"1", Nothing, "Management", "1"})
teams.Rows.Add(New String() {"2", "1", "Dev", "1"})
teams.Rows.Add(New String() {"3", "2", "QA", "1"})
teams.Rows.Add(New String() {"4", "1", "Support", "0"})

RadOrgChart3.GroupEnabledBinding.NodeBindingSettings.DataFieldID = "TeamID"
RadOrgChart3.GroupEnabledBinding.NodeBindingSettings.DataFieldParentID = "ReportsTo"
RadOrgChart3.GroupEnabledBinding.NodeBindingSettings.DataCollapsedField = "Collapsed"

RadOrgChart3.RenderedFields.NodeFields.Add(New Telerik.Web.UI.OrgChartRenderedField() With {.DataField = "Team"})
RadOrgChart3.GroupEnabledBinding.NodeBindingSettings.DataSource = teams

RadOrgChart3.GroupEnabledBinding.GroupItemBindingSettings.DataFieldID = "EmployeeID"
RadOrgChart3.GroupEnabledBinding.GroupItemBindingSettings.DataFieldNodeID = "TeamID"
RadOrgChart3.GroupEnabledBinding.GroupItemBindingSettings.DataTextField = "Name"
RadOrgChart3.GroupEnabledBinding.GroupItemBindingSettings.DataSource = employees

RadOrgChart3.DataBind()

'#End Region

'#Region  "group_expandcollapse_1"

Dim employeesData = New DataTable()
employeesData.Columns.Add("EmployeeID")
employeesData.Columns.Add("TeamID")
employeesData.Columns.Add("Name")
employeesData.Rows.Add(New String() {"1", "1", "Ken"})
employeesData.Rows.Add(New String() {"2", "1", "Kate"})
employeesData.Rows.Add(New String() {"3", "2", "Arnold"})
employeesData.Rows.Add(New String() {"4", "2", "Peter"})
employeesData.Rows.Add(New String() {"5", "3", "Tim"})
employeesData.Rows.Add(New String() {"6", "3", "John"})
employeesData.Rows.Add(New String() {"7", "4", "David"})
employeesData.Rows.Add(New String() {"8", "4", "Joe"})

Dim teamsData = New DataTable()
teamsData.Columns.Add("TeamID")
teamsData.Columns.Add("ReportsTo")
teamsData.Columns.Add("Team")
teamsData.Columns.Add("GroupCollapsed")
teamsData.Rows.Add(New String() {"1", Nothing, "Management", "1"})
teamsData.Rows.Add(New String() {"2", "1", "Dev", "1"})
teamsData.Rows.Add(New String() {"3", "2", "QA", "1"})
teamsData.Rows.Add(New String() {"4", "1", "Support", "0"})

RadOrgChart5.GroupEnabledBinding.NodeBindingSettings.DataFieldID = "TeamID"
RadOrgChart5.GroupEnabledBinding.NodeBindingSettings.DataFieldParentID = "ReportsTo"
RadOrgChart5.GroupEnabledBinding.NodeBindingSettings.DataGroupCollapsedField = "GroupCollapsed"

RadOrgChart5.RenderedFields.NodeFields.Add(New Telerik.Web.UI.OrgChartRenderedField() With {.DataField = "Team"})
RadOrgChart5.GroupEnabledBinding.NodeBindingSettings.DataSource = teamsData

RadOrgChart5.GroupEnabledBinding.GroupItemBindingSettings.DataFieldID = "EmployeeID"
RadOrgChart5.GroupEnabledBinding.GroupItemBindingSettings.DataFieldNodeID = "TeamID"
RadOrgChart5.GroupEnabledBinding.GroupItemBindingSettings.DataTextField = "Name"
RadOrgChart5.GroupEnabledBinding.GroupItemBindingSettings.DataSource = employeesData

RadOrgChart5.DataBind()

'#End Region

Bind Node's Collapsed property in group-enabled binding scenario:

<telerik:RadOrgChart RenderMode="Lightweight" runat="server" ID="RadOrgChart3" EnableCollapsing="true">
</telerik:RadOrgChart>
Dim employees = New DataTable()
employees.Columns.Add("EmployeeID")
employees.Columns.Add("TeamID")
employees.Columns.Add("Name")
employees.Rows.Add(New String() {"1", "1", "Ken"})
employees.Rows.Add(New String() {"2", "2", "Arnold"})
employees.Rows.Add(New String() {"3", "3", "Tim"})
employees.Rows.Add(New String() {"4", "4", "David"})

Dim teams = New DataTable()
teams.Columns.Add("TeamID")
teams.Columns.Add("ReportsTo")
teams.Columns.Add("Team")
teams.Columns.Add("Collapsed")
teams.Rows.Add(New String() {"1", Nothing, "Management", "1"})
teams.Rows.Add(New String() {"2", "1", "Dev", "1"})
teams.Rows.Add(New String() {"3", "2", "QA", "1"})
teams.Rows.Add(New String() {"4", "1", "Support", "0"})

RadOrgChart3.GroupEnabledBinding.NodeBindingSettings.DataFieldID = "TeamID"
RadOrgChart3.GroupEnabledBinding.NodeBindingSettings.DataFieldParentID = "ReportsTo"
RadOrgChart3.GroupEnabledBinding.NodeBindingSettings.DataCollapsedField = "Collapsed"

RadOrgChart3.RenderedFields.NodeFields.Add(New Telerik.Web.UI.OrgChartRenderedField() With {.DataField = "Team"})
RadOrgChart3.GroupEnabledBinding.NodeBindingSettings.DataSource = teams

RadOrgChart3.GroupEnabledBinding.GroupItemBindingSettings.DataFieldID = "EmployeeID"
RadOrgChart3.GroupEnabledBinding.GroupItemBindingSettings.DataFieldNodeID = "TeamID"
RadOrgChart3.GroupEnabledBinding.GroupItemBindingSettings.DataTextField = "Name"
RadOrgChart3.GroupEnabledBinding.GroupItemBindingSettings.DataSource = employees

RadOrgChart3.DataBind()

'#End Region

'#Region  "group_expandcollapse_1"

Dim employeesData = New DataTable()
employeesData.Columns.Add("EmployeeID")
employeesData.Columns.Add("TeamID")
employeesData.Columns.Add("Name")
employeesData.Rows.Add(New String() {"1", "1", "Ken"})
employeesData.Rows.Add(New String() {"2", "1", "Kate"})
employeesData.Rows.Add(New String() {"3", "2", "Arnold"})
employeesData.Rows.Add(New String() {"4", "2", "Peter"})
employeesData.Rows.Add(New String() {"5", "3", "Tim"})
employeesData.Rows.Add(New String() {"6", "3", "John"})
employeesData.Rows.Add(New String() {"7", "4", "David"})
employeesData.Rows.Add(New String() {"8", "4", "Joe"})

Dim teamsData = New DataTable()
teamsData.Columns.Add("TeamID")
teamsData.Columns.Add("ReportsTo")
teamsData.Columns.Add("Team")
teamsData.Columns.Add("GroupCollapsed")
teamsData.Rows.Add(New String() {"1", Nothing, "Management", "1"})
teamsData.Rows.Add(New String() {"2", "1", "Dev", "1"})
teamsData.Rows.Add(New String() {"3", "2", "QA", "1"})
teamsData.Rows.Add(New String() {"4", "1", "Support", "0"})

RadOrgChart5.GroupEnabledBinding.NodeBindingSettings.DataFieldID = "TeamID"
RadOrgChart5.GroupEnabledBinding.NodeBindingSettings.DataFieldParentID = "ReportsTo"
RadOrgChart5.GroupEnabledBinding.NodeBindingSettings.DataGroupCollapsedField = "GroupCollapsed"

RadOrgChart5.RenderedFields.NodeFields.Add(New Telerik.Web.UI.OrgChartRenderedField() With {.DataField = "Team"})
RadOrgChart5.GroupEnabledBinding.NodeBindingSettings.DataSource = teamsData

RadOrgChart5.GroupEnabledBinding.GroupItemBindingSettings.DataFieldID = "EmployeeID"
RadOrgChart5.GroupEnabledBinding.GroupItemBindingSettings.DataFieldNodeID = "TeamID"
RadOrgChart5.GroupEnabledBinding.GroupItemBindingSettings.DataTextField = "Name"
RadOrgChart5.GroupEnabledBinding.GroupItemBindingSettings.DataSource = employeesData

RadOrgChart5.DataBind()

'#End Region

Expand/Collapse Groups

RadOrgChart also supports Expand/Collapse of a Group. The functionality could be enabled by setting EnableGroupCollapsing property to true. The functionality is available when a Node has more than one GroupItem. DataGroupCollapsedField property (in the group-enabled binding settings) gets or sets the data field holding the GroupCollapsed property for the currently bound Node. You can set Group’s Expand/Collapse state by setting GroupCollapsed property of the Node.

Expand/Collapse Group

To further customize the functionality of the RadOrgChart control there are also several server-side methods:

  • CollapseAllGroups()– collapse all groups in the RadOrgChart

  • CollapseGroups()- collapse groups in the RadOrgChart by criteria (lambda)

  • ExpandAllGroups()– expand all groups in the RadOrgChart

  • ExpandGroups()- expand groups in the RadOrgChart by criteria (lambda)

Here is an example how to enable the Expanding/Collapsing of a Group from the markup.

<telerik:RadOrgChart RenderMode="Lightweight" runat="server" ID="RadOrgChart4" EnableGroupCollapsing="true">
    <Nodes>
        <telerik:OrgChartNode>
            <GroupItems>
                <telerik:OrgChartGroupItem Text="Item1">
                </telerik:OrgChartGroupItem>
                <telerik:OrgChartGroupItem Text="Item1">
                </telerik:OrgChartGroupItem>
            </GroupItems>
            <Nodes>
                <telerik:OrgChartNode GroupCollapsed="true">
                    <GroupItems>
                        <telerik:OrgChartGroupItem Text="Item1">
                        </telerik:OrgChartGroupItem>
                        <telerik:OrgChartGroupItem Text="Item1">
                        </telerik:OrgChartGroupItem>
                    </GroupItems>
                </telerik:OrgChartNode>
            </Nodes>
        </telerik:OrgChartNode>
    </Nodes>
</telerik:RadOrgChart>

Bind Node's GroupCollapsed property in group-enabled binding:

<telerik:RadOrgChart RenderMode="Lightweight" runat="server" ID="RadOrgChart5" EnableGroupCollapsing="true">
</telerik:RadOrgChart>

Persist Expand/Collapse State of the Nodes

When the PersistExpandCollapseState property is set to true the nodes in RadOrgChart persist their Collapsed and GroupCollapsed state after postback. The default value of the PersistExpandCollapseState is true so if such functionality is not wanted it should be set to false.

See Also