Creating and filtering a grid, then returning rowset

[scott]

Hi.  I have a grid with a DataTable as its ItemsSource.  I need to answer the question: What DataTable rows are left if I apply a bunch of saved filters to this DataTable ?  So I'm trying to:

public List<DataRow> GetList(DataTable dt)
{
    DataTable myTable = DupTable(dt);
    RadGridView myGrid = new RadGridView() { ItemsSource = myTable, Visibility = Visibility.Visible, EnableRowVirtualization=false };
    myGrid.Filtered += new EventHandler<GridViewFilteredEventArgs>(myGrid_Filtered);
    myGrid.Items.CollectionChanged += new System.Collections.Specialized.NotifyCollectionChangedEventHandler(Items_CollectionChanged);
    foreach (ColumnFilterDescriptor fd in myfilters)
        myGrid.FilterDescriptors.Add(fd);
    IList<GridViewRow> list = myGrid.ChildrenOfType<GridViewRow>();
    List<DataRow> results = new List<DataRow>();
    foreach (GridViewRow gvr in list)
        results.Add(gvr.Item as DataRow);
    return results;

The problem with this approach is that myGrid.ChildOfType<GridViewRow> is returning empty and I don't know why that is.  I've been playing with visibility and virtualization trying to get some data back but no success. Using the collection changed event I can see that the data are going into the grid and being filtered correctly... I just need to get the DataRows back out of the grid...

Can somebody please tell me why myGrid.ChildrenOfType<GridViewRow> might be empty ?

Thank you -
Scott

[scott]

Just hacking at this problem... This seems to work :)

 

//foreach (GridViewRow gvr in list)
//    results.Add(gvr.Item as DataRow);
for (int i = 0; i < myGrid.Items.Count; i++)
{
    DataRow row = myGrid.Items[i].GetType().GetProperty("DataRow").GetValue(myGrid.Items[i], null) as DataRow;
    results.Add(row);
}

Any big difference ?

[Vlad]

Hello,

Our DataTable will create dynamic objects with real properties from the original rows and that is why Items will return these object instead original. 

Best wishes,
Vlad
the Telerik team