Questions tagged [visualtreehelper]

92 questions
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WPF | VisualTreeHelper.GetChildrenCount(this) on collapsed parent

I have a "huge" Control where ~50% of it is collapsed. You can switch by a property to hide the visible part and show the collapsed one. Now when the Control is loaded, I try to find all FooControls in the visible and collapsed part of the control.…
Dominic Jonas
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Getting ListBox Items Silverlight

I have tried to get the listbox items using VisualTreeHelper class. When I do VisualTreeHelper.GetChildrenCount((DependencyProperty)listBox1) it returns count as 0. But the listbox has lot of listboxitems in it.Can someone let me know if I am doing…
Lalith
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chart series not saved in the image

In my WPF project I use the Control.Datavisualization.Charting.Chart control to plot some line series. I also would like to store the Chart into an image, so I do the following (after series creation): this.chart.Series.Clear(); …
FrancescoDS
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media element from visual tree does not display video just audio in 8.1 store app

I have a video to play in 8.1 windows store app and wanna to keep audio playing after navigating to other page .. i did it using visualTreeHelper so i declare a media element in app.xaml and add it to frame in app.xaml.cs , and get it in the…
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Finding a control in WPF sometimes works and sometimes doesn't. Why?

I have a datagrid with a button in each column header. Here's the XAML: