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nestedviewtemplate expanded

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Cres
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Cres asked on 17 Jul 2008, 02:44 AM
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

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Shinu
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answered on 17 Jul 2008, 04:32 AM
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.
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Cres
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answered on 17 Jul 2008, 05:39 AM
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;  
            
        }  
 
    }   
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Princy
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answered on 17 Jul 2008, 06:30 AM
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
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Cres
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answered on 17 Jul 2008, 08:23 AM
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
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Daniel
Telerik team
answered on 17 Jul 2008, 03:30 PM
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
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Cres
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answered on 20 Jul 2008, 05:41 AM
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
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Daniel
Telerik team
answered on 21 Jul 2008, 02:55 PM
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
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Cres
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answered on 10 Aug 2008, 03:11 PM
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
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Daniel
Telerik team
answered on 13 Aug 2008, 02:27 PM
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
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Cres
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Daniel
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