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Performance issue on HierarchyChildTemplate

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Ramesh asked on 01 Mar 2012, 08:31 AM

Hello,

I am trying to fix a performance issue when using HierarchyChildTemplate to create a hierarchical grid. Its having a huge performance issue when there are large amount of data / large strings in cells.
Here is the xaml code given .

<UserControl x:Class="GridBuildingBlock"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:telerikGrid="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.GridView" 
             xmlns:telerikGridView="clr-namespace:Telerik.Windows.Controls.GridView;assembly=Telerik.Windows.Controls.GridView"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:telerik="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls"
             xmlns:telerikNs="http://schemas.telerik.com/2008/xaml/presentation"
             xmlns:Core="clr-namespace:System;assembly=mscorlib"
             Margin="0,0,0,5"
             xmlns:igWindows="http://infragistics.com/Windows"
             xmlns:buildingBlock="clr-namespace:BuildingBlocks"
             Width="Auto"
             Height="Auto"
             
             HorizontalAlignment="Stretch"
             VerticalAlignment="Stretch" SizeChanged="UserControl_SizeChanged">
    <UserControl.Resources>
        <telerik:Office_SilverTheme x:Key="Theme" />

        <DataTemplate x:Key="Child1" >
            <telerikGrid:RadGridView x:Name="rgvChid1" ShowGroupPanel="False" CanUserSortColumns="False" telerik:StyleManager.Theme="{StaticResource Theme}"
                                     IsFilteringAllowed="False" AutoGenerateColumns="False" CanUserDeleteRows="False"  
                                 CanUserInsertRows="False"  Loaded="rgvChid_Loaded"  Width="{Binding ElementName=rdgView,Path=ActualWidth}"     >
            </telerikGrid:RadGridView>
        </DataTemplate>
    </UserControl.Resources>


    <StackPanel Name="stkMain" 
                Height="Auto">
         
        <Grid Margin="0,5,0,7"  >
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*"></ColumnDefinition>
                <ColumnDefinition MaxWidth="20" Width="{Binding Path=ActualWidth,ElementName=rgvMainSB}" ></ColumnDefinition>
            </Grid.ColumnDefinitions>
            <telerikGrid:RadGridView x:Name="rdgView" DataLoadMode="Synchronous" CanUserFreezeColumns="False"    telerik:StyleManager.Theme="{StaticResource Theme}" 
 
                          AutoGenerateColumns="False" ColumnWidth="*"   ShowGroupPanel="False" 
                         CanUserInsertRows="False"        CanUserSortColumns="True" Sorting="rdgView_Sorting" VirtualizingStackPanel.VirtualizationMode="Recycling"
                          CanUserDeleteRows="False" ScrollViewer.HorizontalScrollBarVisibility="Hidden" IsSynchronizedWithCurrentItem="True">
            </telerikGrid:RadGridView>
            <ScrollBar  x:Name="rgvMainSB" Width="20"  Grid.Column="1" Orientation="Vertical" Visibility="Collapsed" ></ScrollBar>
        </Grid>
    </StackPanel>
</UserControl>





And in the Main grid loaded event we are dynamically adding the columns to the main grid + setting the HierarchyChildTemplate property.
And in the child gridview loaded the child grids columns are being set. 
  Private Sub rgvChid_Loaded(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs)
            Dim rgv As RadGridView = DirectCast(sender, RadGridView)
            rgv.Width = rdgView.ActualWidth - 30
            If TypeOf rgv.DataContext Is GenericPresentationObject Then
                rgv.ItemsSource = DirectCast(rgv.DataContext, GenericPresentationObject).Properties(_LayoutIdentityCollection.Values(0))
            End If
            rgv.UpdateLayout()
            If rgv.Columns.Count = 0 Then
                Dim colConstruct As Reflection.ConstructorInfo
                For Each col In GetColumnCollectionForLayout(1)
                    Dim grdcolumn As GridViewColumn
                    colConstruct = col.GetType.GetConstructor(System.Type.EmptyTypes)
                    If colConstruct IsNot Nothing Then
                        grdcolumn = DirectCast(colConstruct.Invoke(Nothing), GridViewColumn)
                        grdcolumn.CopyPropertiesFrom(col)
                        rgv.Columns.Add(grdcolumn)
                    End If
                Next
                If UseChildGridRowSelection Then
                    AddHandler rgv.SelectionChanged, AddressOf rdgView_SelectionChanged
                End If
                CheckAndSetNewLayout(rgv, 2)
            End If
        End Sub


Please help me.

Performance issue on HierarchyChildTemplate

4 Answers, 1 is accepted