Expand Collapse function

[Eric]

I want to implement radio buttons called “Expand/Collapse Selected” which would toggle depending on the state of what is selected.

 If you chose to Expand on the root (grandparent/first) level, it should drill in all the way.  If you are on the second level, it should expand all the way also, but just for that record. It should not expand the other records on the grid, only the selected (clicked) one.
How do I achieve this?

[Shinu]

Hi Eric,

I implemented the requested functionality on my side using a GridTemplateColumn with a radiobutton in its ItemTemplate. Here is the code I tired.

ASPX:

 <telerik:GridTemplateColumn UniqueName="TempCol" DataField="TimeSpan"  >
                      <ItemTemplate>
                          <asp:RadioButton ID="RadioButton1" AutoPostBack="true"  runat="server" OnCheckedChanged="RadioButton1_CheckedChanged" />
                      </ItemTemplate>
                    </telerik:GridTemplateColumn>

CS:

 protected void RadioButton1_CheckedChanged(object sender, EventArgs e)
    {
        RadioButton radbtn = (RadioButton)sender;
        GridDataItem item = (GridDataItem)radbtn.NamingContainer;
        item.Expanded = true;
        if (item.Expanded)
        {
            GridTableView nestedView = ((GridDataItem)item).ChildItem.NestedTableViews[0];
            foreach (GridItem childitem in nestedView.Items)
            {
                childitem.Expanded = true;
                if (childitem.Expanded)
                {
                    GridTableView nestedView2 = ((GridDataItem)childitem).ChildItem.NestedTableViews[0];
                    foreach (GridItem childitem2 in nestedView2.Items)
                    {
                        childitem2.Expanded = true;
                    }

                }
            }

        }
    }

Thanks
Shinu.