Databases
StackOverflow2013
Postsdbo
POHow to render usercontrols separately
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POHow to render usercontrols separately
    primarykey
    data
    text
    <p>I have a UserControl drawing the datacontext with Itemscontrol etc. I'm having three objects of the same usercontrol but with different datacontexts which is initialized on startup of the program. The problem is that the datacontext is so big so it's drawing about 2000 UIelements on each of the objects. This takes so much time and what really is annoying me is that WPF is running in a single UIThread, so my computer is using 1/8 of the total CPU power to draw this. How can I make this faster?</p> <p>The code (DynamicShelViewModel is a usercontrol)</p> <pre><code>dataContextBestSellers = new DynamicShelfViewModel(_config, dataRepository, ProductSelectionMode.BestSellers); dataContextNormal = new DynamicShelfViewModel(_config, dataRepository, ProductSelectionMode.Normal); dataContextFull = new DynamicShelfViewModel(_config, dataRepository, ProductSelectionMode.AllProducts); ScrollGrid = new Grid(); ScrollGrid.Children.Add(dataContextBestSellers); ScrollGrid.Children.Add(dataContextNormal); ScrollGrid.Children.Add(dataContextFull); </code></pre> <p>This takes about 2 minutes to accomplish.</p> <p>This is the XAML code of DynamicShelfViewModel</p> <pre><code>&lt;Grid&gt; &lt;ItemsControl x:Name="ShelvesControl" VirtualizingStackPanel.IsVirtualizing="True" VirtualizingStackPanel.VirtualizationMode="Recycling" DataContext="{Binding}" Width="{Binding Size.Width}" VerticalAlignment="Top" Height="{Binding Size.Height}" Grid.Column="0" Grid.Row="1" ItemsSource="{Binding ShelvesInViewPort}"&gt; &lt;ItemsControl.ItemsPanel&gt; &lt;ItemsPanelTemplate&gt; &lt;StackPanel VerticalAlignment="Stretch " HorizontalAlignment="Stretch" Orientation="Vertical" /&gt; &lt;/ItemsPanelTemplate&gt; &lt;/ItemsControl.ItemsPanel&gt; &lt;ItemsControl.ItemTemplate&gt; &lt;DataTemplate&gt; &lt;Grid Name="ShelfGrid" Height="{Binding Height}" MaxHeight="{Binding Height}" DataContext="{Binding}"&gt; &lt;Grid.Background&gt; &lt;SolidColorBrush Color="{Binding Color}" /&gt; &lt;/Grid.Background&gt; &lt;Grid.RowDefinitions&gt; &lt;RowDefinition Height="*" /&gt; &lt;RowDefinition Height="{Binding SplitterSize}" /&gt; &lt;/Grid.RowDefinitions&gt; &lt;TextBlock Name="stretchingLabel" Height="{Binding SplitterSize}" Padding="0" Grid.Row="1" VerticalAlignment="Stretch" HorizontalAlignment="Stretch"&gt; &lt;TextBlock.Background&gt; &lt;ImageBrush ImageSource="{Binding Converter={Utilities1:FancySourceConverter}, ConverterParameter=Images/ShelvesImages/shelfhorisontal.png}" /&gt; &lt;/TextBlock.Background&gt; &lt;Grid VerticalAlignment="Stretch" Width="{Binding ElementName=stretchingLabel,Path=ActualWidth}" Height="{Binding ElementName=stretchingLabel,Path=ActualHeight}" HorizontalAlignment="Stretch"&gt; &lt;Grid.RowDefinitions&gt; &lt;RowDefinition Height="0.24*" /&gt; &lt;RowDefinition Height="0.62*" /&gt; &lt;RowDefinition Height="0.24*" /&gt; &lt;/Grid.RowDefinitions&gt; &lt;my:CategoryLine VerticalAlignment="Stretch" HorizontalAlignment="Stretch" Grid.Row="1" DataContext="{Binding ElementName=ShelfGrid, Path=DataContext}"&gt; &lt;/my:CategoryLine&gt; &lt;/Grid&gt; &lt;/TextBlock&gt; &lt;TextBlock Name="stretchedLabel" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" Grid.Row="0" Padding="0"&gt; &lt;ItemsControl ItemsSource="{Binding Products}" VerticalAlignment="Stretch" HorizontalAlignment="Stretch"&gt; &lt;ItemsControl.ItemsPanel&gt; &lt;ItemsPanelTemplate&gt; &lt;UniformGrid DataContext="{Binding}" Width="{Binding ElementName=stretchedLabel, Path=ActualWidth}" MaxHeight="{Binding ElementName=stretchedLabel, Path=ActualHeight}" Height="{Binding ElementName=stretchedLabel, Path=ActualHeight}" Columns="{Binding Path=DataContext.Slots, RelativeSource={RelativeSource AncestorType={x:Type Grid}}}" Rows="1" VerticalAlignment="Stretch" Name="ParentUniformGrid" HorizontalAlignment="Stretch" /&gt; &lt;/ItemsPanelTemplate&gt; &lt;/ItemsControl.ItemsPanel&gt; &lt;ItemsControl.ItemTemplate&gt; &lt;DataTemplate&gt; &lt;ItemsControl&gt; &lt;Grid Height="{Binding ElementName=stretchedLabel, Path=ActualHeight}" VerticalAlignment="Stretch" HorizontalAlignment="Stretch"&gt; &lt;Grid.RowDefinitions&gt; &lt;RowDefinition Height="*" /&gt; &lt;RowDefinition Height="{Binding ElementName=ParentUniformGrid,Path=DataContext.SplitterSize}" /&gt; &lt;/Grid.RowDefinitions&gt; &lt;Image VerticalAlignment="Bottom" Grid.Row="0" HorizontalAlignment="Center" x:Name="ProductImage" Source="{Binding Converter={Utilities:ProductImageConverter}}" Height="{Binding ImageHeight}" MaxHeight="{Binding ImageHeight}" MouseLeftButtonUp="BuyProductUsingImage" /&gt; &lt;Label Padding="0" Margin="0 1 0 0" Grid.Row="1" Background="LightGray" VerticalAlignment="Stretch" VerticalContentAlignment="Center" HorizontalContentAlignment="Center" HorizontalAlignment="Stretch"&gt; &lt;Label VerticalAlignment="Center" Margin="1" HorizontalAlignment="Center" VerticalContentAlignment="Center" HorizontalContentAlignment="Center" Background="#fff" Padding="0" MaxWidth="{Binding ElementName=ShelvesControl, Path=DataContext.PriceLabelWidthSize}" Width="{Binding ElementName=ShelvesControl, Path=DataContext.PriceLabelWidthSize}"&gt; &lt;Viewbox VerticalAlignment="Center" HorizontalAlignment="Center"&gt; &lt;StackPanel Orientation="Horizontal" VerticalAlignment="Bottom" Margin="1" Background="#fff" HorizontalAlignment="Left"&gt; &lt;Label Background="Yellow" Padding="2 0 2 0" VerticalContentAlignment="Bottom" FontWeight="Bold" Content="{Binding Price}"&gt; &lt;/Label&gt; &lt;/StackPanel&gt; &lt;/Viewbox&gt; &lt;/Label&gt; &lt;/Label&gt; &lt;/Grid&gt; &lt;/ItemsControl&gt; &lt;/DataTemplate&gt; &lt;/ItemsControl.ItemTemplate&gt; &lt;/ItemsControl&gt; &lt;/TextBlock&gt; &lt;/Grid&gt; &lt;/DataTemplate&gt; &lt;/ItemsControl.ItemTemplate&gt; &lt;/ItemsControl&gt; &lt;/Grid&gt; &lt;/UserControl&gt; </code></pre>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USBenjamin
    1. USNumm3n
    plurals
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POHow to render usercontrols separately
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POHow to render usercontrols separately
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POHow to render usercontrols separately
      1. This table or related slice is empty.
      1. VTUpMod
    1. COCan you provide XAMl of the UserControl which bound to so large DataContext?
      singulars
      1. POHow to render usercontrols separately
      1. USsll
    2. CO@sll Updated the question with the XAML :)
      singulars
      1. POHow to render usercontrols separately
      1. USNumm3n
    3. COAre you using ListView for the root ItemsControl? Is there any ScrollViewer? Try out using ListView for root ItemsControl and set `<ListView ScrollViewer.IsDeferredScrollingEnabled="True"`
      singulars
      1. POHow to render usercontrols separately
      1. USsll
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload