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POusing the dispatcher to load usercontrols in WPF
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  1. POusing the dispatcher to load usercontrols in WPF
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    copied!<p>I have a user control that has a grid with like 2900 items in it, there is nothing I can do about this cause that is the way the business want's it... Obviously this is slow to load/render so I created this trick using the dispatcher, in the view model that handles the event (prism event... not a standard windows event). </p> <pre><code> public void ShowPopUp(Type viewType) { var waitScreen = new Controls.Views.SampleView(); var popUp = new ShellBlank(); popUp.Content = waitScreen; popUp.WindowStartupLocation = System.Windows.WindowStartupLocation.CenterScreen; popUp.Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Background, new Action(delegate() { popUp.Content = container.Resolve(viewType);}) ); popUp.ShowDialog(); } </code></pre> <p>It works just fine however on my SampleView (as it is called at the moment) there is an in-determinant progress bar however it never updates, like you know - the green bara going back and fourth... Here is the XAML for it. </p> <pre><code> &lt;Border&gt; &lt;Grid&gt; &lt;Grid.RowDefinitions&gt; &lt;RowDefinition/&gt; &lt;RowDefinition/&gt; &lt;/Grid.RowDefinitions&gt; &lt;Label Margin="12" FontSize="16" Foreground="WhiteSmoke" Content="Loading... Please wait"/&gt; &lt;ProgressBar Grid.Row="1" IsIndeterminate="True" Width="280" Height="24"/&gt; &lt;/Grid&gt; &lt;/Border&gt; </code></pre> <p>Is it something to do with the dispatcher not letting it update?</p> <p>Anyone ever done something like this? got any suggestions? </p> <p>Thanks!</p>
 

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