[Solved] Dynamic expand item server-side

[Marco]

Hi,

I have a RadGrid with a detailtable.
Given a certain condition i would like to expand an item dynamically usiong the following code

protected void customerRadGrid_ItemDataBound(object sender, GridItemEventArgs e)
{
  if (e.Item is GridDataItem)
  {
    if (MyExpandCondition((e.Item as GridDataItem)))
    {
      item.Expanded = true;
    }
  }
}

Just setting the Expanded property to true doesn't seem to work. I debugged it and CanExpand is still false (because the ChildItem is still null) at this time.
The HierarchyLoadMode is set to the default one (ServerOnDemand)

I found out that when the user clicks the expand button a firecommand method is called with "ExpandCollapse" and the

ItemIndexHierarchical

 as parameters.
So i changed the "item.Expanded = true" line into "item.FireCommandEvent(RadGrid.ExpandCollapseCommandName, item.ItemIndexHierarchical)" but that doesn't seem to do what i expected.

Does anybody know how to expand this server-side? Or is there a Telerik demo that shows how to do this?

Thanks in advance!

 

[Princy]

Hello Marco,

You can try expanding the row based on your condition in the PreRender event of the grid:
c#:

 protected void customerRadGrid_PreRender(object sender, EventArgs e)
    {
        foreach (GridDataItem dataItem in customerRadGrid.MasterTableView.Items)
        {
             if (condition is satisfied)
                {
                    dataItem.Expanded = true;
                }
        }
    }

Regards
Princy.