Expand/Collapse All Groups?

[Random]

We're using a Grid with fixed Grouping (so the GroupPanel is not accessible) and want to enable expand and collapse all via buttons outside the grid. Is this possible?

I've looked through all the examples I could find, and couldn't find anything that will allow me to do it.

On the Client Settings, we've got both AllowExpandCollapse and AllowGroupExpandCollapse set to true. HierarchyLoadMode is ServerBind. We can do the expand/collapse either on the client or server side, we don't mind which.

ASPX code for the grid is as follows:

<telerik:RadGrid ID="grdMyProcesses" runat="server" AllowPaging="False"
    AutoGenerateColumns="False" AllowCustomPaging="False" BackColor="White"
    Height="600px">
    <GroupingSettings ExpandTooltip="Expand" CollapseTooltip="Collapse"  />
    <ClientSettings AllowExpandCollapse="True" AllowGroupExpandCollapse="True" >
        <Selecting AllowRowSelect="True" />
        <Scrolling AllowScroll="true" UseStaticHeaders="true" />
    </ClientSettings>
    <MasterTableView DataKeyNames="ProcessID" NoDetailRecordsText="No Processes."
        NoMasterRecordsText="No Processes." ShowHeadersWhenNoRecords="False" AllowCustomPaging="False"
        HierarchyLoadMode="ServerBind" BackColor="White">
        <ExpandCollapseColumn Resizable="False" >
            <HeaderStyle Width="20px" />
        </ExpandCollapseColumn>
        <Columns>
            <telerik:GridBoundColumn DataField="ID" UniqueName="colID" Visible="False" />
            <telerik:GridTemplateColumn HeaderText="Process" SortExpression="ProcessName" ItemStyle-Width="459px" HeaderStyle-Width="459px">
                <ItemTemplate>
                    <asp:HyperLink ID="lnkProcessName" runat="server" NavigateUrl='<%# Eval("ProcessSummaryURL") %>' Text='<%# Eval("ProcessName") %>' ToolTip='<%# Eval("ProcessDefinition") %>'></asp:HyperLink>
                </ItemTemplate>
            </telerik:GridTemplateColumn>
            <telerik:GridTemplateColumn HeaderText="Process Owner" SortExpression="ProcessOwnerName" ItemStyle-Width="100px" HeaderStyle-Width="100px">
                <ItemTemplate>
                    <asp:HyperLink ID="lnkProcessOwner" runat="server" NavigateUrl='<%# Eval("EmailToProcessOwnerURL") %>' Text='<%# Eval("ProcessOwnerName") %>' ToolTip="Send a message to the Process Owner about this Process."></asp:HyperLink>
                </ItemTemplate>
            </telerik:GridTemplateColumn>
        </Columns>
        <SortExpressions>
            <telerik:GridSortExpression FieldName="ProcessDisplayOrder" />
        </SortExpressions>
        <GroupByExpressions>
            <telerik:GridGroupByExpression>
                <SelectFields>
                  <telerik:GridGroupByField HeaderText="Group" FieldAlias="Group" FieldName="GroupName" FormatString="" />
                </SelectFields>
                <GroupByFields>
                    <telerik:GridGroupByField FieldAlias="GroupID" FieldName="GroupID" />
                </GroupByFields>
            </telerik:GridGroupByExpression>
            <telerik:GridGroupByExpression>
                <SelectFields>
                    <telerik:GridGroupByField HeaderText="Enterprise Process" FieldAlias="EP" FieldName="EnterpriseProcessName" FormatString="" />
                </SelectFields>
                <GroupByFields>
                    <telerik:GridGroupByField FieldAlias="EnterpriseProcessDisplayOrder" FieldName="EnterpriseProcessDisplayOrder" />
                    <telerik:GridGroupByField FieldAlias="EnterpriseProcessID" FieldName="EnterpriseProcessID" />
                </GroupByFields>
            </telerik:GridGroupByExpression>
        </GroupByExpressions>
    </MasterTableView>
</telerik:RadGrid>

Anyone know?

Enjoy
Random

[Vasil]

Hello Random,

You could set HierarchyDefaultExpanded to "true" or to "false" for the grid during the post-back, based on which button was clicked. This will result in expanding or collapsing all items.

Regards,
Vasil
the Telerik team