GridView's hierarchy Performance Problem

[wang]

Use GridView as hierarchy. When GridView's row records extends 1000, browser response slowly (about 3 minutes). The same situation happen at RowDetails. Please help!

1. xaml code:
   <telerik:RadGridView Name="radGridView" ItemsSource="{Binding source}" IsReadOnly="True" AutoGenerateColumns="False"
           RowIndicatorVisibility="Collapsed">
               <telerik:RadGridView.ChildTableDefinitions>
                   <telerik:GridViewTableDefinition />
               </telerik:RadGridView.ChildTableDefinitions>
              
               <telerik:RadGridView.Columns>
                   <telerik:GridViewDataColumn DataMemberBinding="{Binding str1}"
                                                   Header="Test Hearder1"
                                                   Width="100" IsReadOnly="True" IsFilterable="true" IsSortable="True" />
                   <telerik:GridViewDataColumn DataMemberBinding="{Binding str2}"
                                                   Header="Test Hearder2"
                                                   Width="100" IsReadOnly="True" IsFilterable="true" IsSortable="True" />
                   <telerik:GridViewDataColumn DataMemberBinding="{Binding str3}"
                                                   Header="Test Hearder3"
                                                   Width="100" IsReadOnly="True" IsFilterable="true" IsSortable="True" />
                   <telerik:GridViewDataColumn DataMemberBinding="{Binding str4}"
                                                   Header="Test Hearder4"
                                                   Width="100" IsReadOnly="True" IsFilterable="true" IsSortable="True" />
               </telerik:RadGridView.Columns>
              
               <telerik:RadGridView.HierarchyChildTemplate>
                   <DataTemplate>
                       <telerik:RadGridView x:Name="RadGridView1" CanUserFreezeColumns="False" AutoGenerateColumns="False" ItemsSource="{Binding lstChild}"  ShowGroupPanel="False" IsReadOnly="True">
                           <telerik:RadGridView.Columns>
                               <telerik:GridViewDataColumn DataMemberBinding="{Binding str1}"
                                                   Header="Test Hearder1"
                                                   Width="100" IsReadOnly="True" IsFilterable="true" IsSortable="True" />
                               <telerik:GridViewDataColumn DataMemberBinding="{Binding str2}"
                                                   Header="Test Hearder2"
                                                   Width="100" IsReadOnly="True" IsFilterable="true" IsSortable="True" />
                               <telerik:GridViewDataColumn DataMemberBinding="{Binding str3}"
                                                   Header="Test Hearder3"
                                                   Width="100" IsReadOnly="True" IsFilterable="true" IsSortable="True" />
                               <telerik:GridViewDataColumn DataMemberBinding="{Binding str4}"
                                                   Header="Test Hearder4"
                                                   Width="100" IsReadOnly="True" IsFilterable="true" IsSortable="True" />
                           </telerik:RadGridView.Columns>
                       </telerik:RadGridView>
                   </DataTemplate>
               </telerik:RadGridView.HierarchyChildTemplate>
           </telerik:RadGridView>
2. cs code:
   public partial class MainPage : UserControl
       {
           public MainPage()
           {
               InitializeComponent();

               List<DataEnt> source=new List<DataEnt>();
               for (int i = 0; i < 50; i++)
               {
                   DataEnt obj=new DataEnt();
                   obj.str1 = "test string";
                   obj.str2 = "test string";
                   obj.str3 = "test string";
                   obj.str4 = "test string";

                   obj.lstChild = new List<DataEnt>();
                   for (int j = 0; j < 1000; j++)
                   {
                       DataEnt obj1 = new DataEnt();
                       obj1.str1 = "test string";
                       obj1.str2 = "test string";
                       obj1.str3 = "test string";
                       obj1.str4 = "test string";
                       obj.lstChild.Add(obj1);
                   }
                   source.Add(obj);
               }

               radGridView.ItemsSource = source;
           }
       }

       public class DataEnt
       {
           public string str1 { get; set; }
           public string str2 { get; set; }
           public string str3 { get; set; }
           public string str4 { get; set; }
           public List<DataEnt> lstChild { get; set; }
       }

    

    

[Vlad]

Hello,

 You need to define Height for your child grid. 

Kind regards,
Vlad
the Telerik team