Problem with DisableProcessing()

Question

I'm trying to prevent a control from being rendered in Wpf because it takes too long to process the items. Since I haven't been able to achieve this, I'm now trying to prevent the screen Form from being rendered.

After doing MyDispatcher.DisableProcessing() of the Screen Process, when adding items to a screen control an error appears in Dispatcher.cs that says: "Error:2146233079 The dispatcher processing has been suspended, but the messages are still being processed."

System.Windows.Threading.Dispatcher MyDispatcher = System.Windows.Threading.Dispatcher.CurrentDispatcher;
System.IDisposable MyThread_IDisposable = MyDispatcher.DisableProcessing()

I haven't been able to prevent the control from being updated because it's already on the screen and I can't use BeginInit(). It doesn't have the required properties either. E.g. for ListBox:

<ListBox VirtualizingStackPanel.IsVirtualizing="True" VirtualizingStackPanel.VirtualizationMode="Recycling">

Answer 1

Hi,@zequion.

The UI has been written in XAML but is not needed for the time being. You could set the control as follows.

 

Visibility="Collapsed": The control will not be rendered.

IsEnabled="False": The control will not be able to accept user input, but will still be rendered.

Opacity="0": The control exists but will not be rendered.

IsHitTestVisible="False": The control will not respond to any mouse events.

 

When not needed

<Button x:Name="MyButton" Content="Click Me"  HorizontalAlignment="Center" VerticalAlignment="Center" IsEnabled="False" Opacity="0"

 IsHitTestVisible="False" Visibility="Collapsed"/>

When needed

MyButton.Visibility = Visibility.Visible;

MyButton.IsEnabled = true;

MyButton.IsHitTestVisible = true;

MyButton.Opacity = 1;

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