nestedviewtemplate expanded

[Cres]

hello community,

is there a way so that my nestedviewtemplate is expanded by default?  related question is how can i expand and collapse all nestedview items.

thanks in advance!
-cris

[Shinu]

Hi Chris,

Try setting HierarchyDefaultExpanded property to true to expand all the nestedview items by default.

ASPX:

  <MasterTableView HierarchyDefaultExpanded="true"   >

You can also refer the following code library submission which explains how to implement ExpandAll/CollapseAll functionality with Grid hierarchy.
Custom expand/collapse column with ExpandAll/CollapseAll image button in the header

Thanks
Shinu.

[Cres]

hello shinu,

both approach did not expand my rows.  maybe, my radgrid is not grouped that is why hierarchy functions does not work.  as i trace the item.canexpanded is always false. any other ideas?

-cris

<telerik:RadGrid ID="CATE_rg" runat="server" DataSourceID="CATE_lds" OnItemDataBound="CateItemBound"
    AllowPaging="True" GridLines="None" AutoGenerateColumns="False" ShowHeader="false" OnPreRender=CatePreRender>
    <MasterTableView DataSourceID="CATE_lds" DataKeyNames="recgid" HierarchyDefaultExpanded="true">
        <Columns>
            <telerik:GridTemplateColumn>
                <ItemStyle Font-Bold="true" Font-Size="Larger" />
                <ItemTemplate>
                    <%# Eval("NAME") %>
                </ItemTemplate>
            </telerik:GridTemplateColumn>
        </Columns>
        <NestedViewTemplate>
            <asp:TextField ID="NAME_hf" Text='<%# Eval("NAME") %>' runat="server" />
            <br />show as expanded fails...
        </NestedViewTemplate>
        <CommandItemTemplate>
        </CommandItemTemplate>
    </MasterTableView>
</telerik:RadGrid>

   protected void CatePreRender(object sender, EventArgs e)
    {
        //Hiding the default expand/collapse image
        foreach (GridItem item in CATE_rg.MasterTableView.Controls[0].Controls)
        {
            if (item is GridNestedViewItem)
                  item.Expanded = true;

        }

    }

[Princy]

Hi Chris,

Can you try setting the HierarchyDefaultExpanded property in the PreRender event and see whether it working .

CS:

 protected void RadGrid1_PreRender(object sender, EventArgs e)
    {
        RadGrid1.MasterTableView.HierarchyDefaultExpanded = true;
        RadGrid1.Rebind();
    }

Thanks
Princy

[Cres]

hi princy,

expansion does not work entirely, i think, rebinding during prerenders resets the viewstate??? anyway, i will try to set the hierarchydefaultexpanded in other possible grid events.

telerik team,
any ideas? or should i file a ticket now?

best,
-cris

[Daniel]

Hi Cris,

We made a sample website for your convenience and it illustrates the needed approach. Please find it attached to this post.

Additionally the same effect can be achieved by the following code-snippet:

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        RadGrid1.MasterTableView.HierarchyDefaultExpanded = true;
        foreach (GridTableView gtv in RadGrid1.MasterTableView.DetailTables)
            gtv.HierarchyDefaultExpanded = true;
    }
}

Greetings,
Daniel
the Telerik team

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[Cres]

hi daniel,

thank you for taking some time to create a sample that works, but my requirement is a nestedview under the mastertableview as indicated in the code that i posted. my requirement is much simpler and is based on the detailtemplate example for ajax radgrids.

thanks again and will wait for your help.

-cris

[Daniel]

Hi Cris,

I made an example based on the Detail template demo and I also configured it to expand as you desired.

Please let me know whether this helps.

Best regards,
Daniel
the Telerik team

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[Cres]

hi daniel,

sorry, weve been very busy for past few weeks, its just this time that i started looking again at this.  forgot to tell the forum that my grid is a user control, so most calls does not work, what event should i set the flags then?

-cris

[Daniel]

Hello Cris,

What do you mean by 'flag'? I suppose you are wondering how to set the Hierarchy to expanded when your RadGrid resides in user control.

(UserGrid1.FindControl("RadGrid1") as RadGrid).MasterTableView.HierarchyDefaultExpanded = true;

The code above can be inserted in your Page_Load event.

Regards,
Daniel
the Telerik team

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