[Solved] Unselect HierarchyItem rows

[Jurjen Ladenius]

Hi,

I'm trying to programmatically unselecting rows in a hierarchy item of a row in my grid. 

I've defined my hierarchy as:
 <telerik:RadGridView.ChildTableDefinitions>
                        <telerik:GridViewTableDefinition>
                            <telerik:GridViewTableDefinition.Relation>
                                <telerik:PropertyRelation ParentPropertyName="Successor" />
                            </telerik:GridViewTableDefinition.Relation>
                        </telerik:GridViewTableDefinition>
                    </telerik:RadGridView.ChildTableDefinitions>

I can expand/collapse using myGrid.CollapseHierarchyItem, but I cannot do myGrid.Unselect(dataItem), nor can I find any method to retrieve hierarchyitem rows.

How can I either find the rows (not data!) associated with the hierarchy item, or unselect the rows?

Thanks in advance!

[Maya]

Hello Jurjen Ladenius,

In order to deselect the items in the child grids, you need firstly to find them. You may do the following:

var rows = this.clubsGrid.ChildrenOfType<GridViewRow>();
            foreach(GridViewRow row in rows)
            {
                var childGrid = row.ChildrenOfType<GridViewDataControl>().FirstOrDefault();
                if(childGrid != null)
                {
                    childGrid.UnselectAll();
                }

            }

However, this will be valid approach if the rows and the child grids are visible, i.e. created. Once you find the child control, you may find its rows as shown above. 
I am sending you a sample project illustrating the suggested approach. Please take a look at it and let me know whether it corresponds to your requirements.
  Regards,
Maya
the Telerik team