[Solved] Is Child GridViewTable limited to 58 records only?

[Vit100]

Hi Guys,
I faced issue with GridView and Child table - somehow child shows only 58 records. Idea is that Customer has list of Sites, and child table shows only 58 site.... must show 100, as I load 100 sites for each customer... Well, this is just example (i can upload test project)...
Pls have a look ...Looks like it is bug..

<telerik:RadGridView
  ItemsSource="{Binding PagedSource,ElementName=radDataPager}"
  RowIsExpandedChanging="RadTreeListView_RowIsExpandedChanging"
  RowLoaded="RadTreeListView_RowLoaded">
            <telerik:RadGridView.ChildTableDefinitions>
                <telerik:GridViewTableDefinition/>
            </telerik:RadGridView.ChildTableDefinitions>
            <telerik:RadGridView.HierarchyChildTemplate>
                <DataTemplate>
                    <telerik:RadGridView ItemsSource="{Binding Sites}"/>
                </DataTemplate>
            </telerik:RadGridView.HierarchyChildTemplate>
</telerik:RadGridView>

This is ViewModel:

public class VM : ModelBase
    {
        private ObservableCollection<CustomerSearchResult> _Customers = new ObservableCollection<CustomerSearchResult>();
        public ObservableCollection<CustomerSearchResult> Customers
        {   get { return _Customers; }
            set {
                if (_Customers != value)
                {_Customers = value;  RaisePropertyChangeEvent("Customers");}
            }
        }

//Here we load 100 record in main/parent table
        public void LoadCustomers()
        {
            for (int i = 0; i < 100; i++)
            {
                var csr = new CustomerSearchResult()
                {   Firstname = "Name" + i.ToString(),
                    SiteCount = i
                };
                Customers.Add(csr);
            }
        }

//and here we load child items. lets load 100 as well
        public void LoadSite(CustomerSearchResult customer)
        {
            for (int i = 0; i < 100; i++)
            {
                customer.Sites.Add(new SiteModel() { Commodity = "My commodity" + i });
            }
        }

This is my Code Behind to emulate LoadOnDemand behavior...

private void RadTreeListView_RowIsExpandedChanging(object sender, RowCancelEventArgs e)
        {
            var csr = e.Row.Item as CustomerSearchResult;
            if (csr != null && csr.SiteCount > 0 && csr.Sites.Count == 0)
            {
                vm.LoadSite(csr);
            }
        }

        private void RadTreeListView_RowLoaded(object sender, RowLoadedEventArgs e)
        {
            GridViewRow row = e.Row as GridViewRow;
            var csr = e.Row.Item as CustomerSearchResult;

            if (row != null && csr != null)
            {
                row.IsExpandable = csr.SiteCount > 0 ? true : false;
            }
        }

[Yavor Georgiev]

Hello Vit100,

 Could you please try setting an explicit height of the RadGridView inside the HierarchyChildTemplate so as to force the scrollbars on the child GridView to appear if needed? Perhaps that's the problem.

All the best,
Yavor Georgiev
the Telerik team

[Vit100]

Bingo!!!
Thanks Yavor!!!

Also it speeded up Grid... Nice -)

One more thing, need your advice.. In example above I emulate loadOnDemand behavior and wonder if it is possible to have loadOnDemand animation icon (like in tree) when child is loading... I don't want to use IsBusy for whole GridView, as user may start load on demand for more then one record at the same time..

[Yavor Georgiev]

Hello Vit100,

 Unfortunately that is not possible without a custom row template.

Kind regards,
Yavor Georgiev
the Telerik team