Minimizing parent hierarchy when child is selected

[Casey]

Is there a way to minimize the parent hierarchy when a child is selected? Our users want only the header of the parent record(s) to be displayed without showing the rest of the rows for that hierarchy level.

For example:
We want to not show the rows for Category 2 and Category 3 when Category 1's children are displayed.

 

1. Category 1
   1. Category 1a
   2. Category 1b
2. Category 2
3. Category 3

[Princy]

Hello Casey,

Try the following code snippet in ItemCommand event to hide parent when child is selected.

C#:

protected void RadGrid2_ItemCommand(object sender, GridCommandEventArgs e)

{

        if (e.CommandName == RadGrid.ExpandCollapseCommandName)

        {

            GridDataItem currentItem = (GridDataItem)e.Item;

            if (!currentItem.Expanded)

            {

                int currentRowIndex = currentItem.ItemIndex;

                foreach (GridDataItem item in RadGrid2.MasterTableView.Items)

                {

                    if (currentRowIndex != item.ItemIndex)

                        item.Visible = false;                                  

                }

            }

            else

            {

                foreach (GridDataItem item in RadGrid2.MasterTableView.Items)

                {

                    item.Visible = true;

                      }

                }

         }

  }


Thanks,
Princy.

[Casey]

Hi Princy,

This worked great for the default level of hierarchy but not for subsequent levels of hierarchy. The data structure I am using has a self referencing hierarchy. Is there a way to loop through the rows of the selected hierarchy level?

1. Category 1
   1. Category 1a
      1. Category 1a1
      2. Category 1a2
   2. Category 1b
      1. Category 2a1
2. Category 2
3. Category 3