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The nature of simulating nature: A Q&A with IBM Quantum researcher Dr. Jamie We've added a "Necessary cookies only" option to the cookie consent popup. wpf - How to set the datacontext of a user control - Stack Overflow The starting markup looks a bit different though: Nothing too strange though - a root UserControl element instead of the Window element, and then the DesignHeight and DesignWidth properties, which controls the size of the user control in design-time (in runtime, the size will be decided by the container that holds the user control). Use of this site constitutes acceptance of our, Copyright 1998-2023 Developer Express Inc. All trademarks or registered trademarks are property of their respective owners, Only Visible to You and DevExpress Support. The upper part of the Grid contains two labels, one showing the title and the other one showing the stats. DataContext should not be set to Self at UserControl Element level. Navigate to other page IocContainers and MVVM light, UWP:Uncheck checkboxes inside ListView on Button Click Event, WPF Design error ( VerticalScrollBarVisibility) and ( HorizontalScrollBarVisibilty ) does not exist in the icsharpcode.net/sharpdevelop/avalonedit. The nature of simulating nature: A Q&A with IBM Quantum researcher Dr. Jamie We've added a "Necessary cookies only" option to the cookie consent popup. This is why our Value binding is failing. Do I need a thermal expansion tank if I already have a pressure tank? You can also try I was cleaning the code slightly and made a typo. Two questions regarding porting WPF code to WinUI: Window Datacontext solved the issue. Download and install snoop. The current character count is obtained by binding to the Text.Length property directly on the TextBox control, which uses the lower part of the user control. Dim vm As New WpfApp030.ViewModel Me.DataContext = vm Call (New Window030Child With {.DataContext = vm}).Show () End Sub End Class Namespace WpfApp030 Public Class ViewModel Implements INotifyPropertyChanged Private _info As String Public Property Info As String Get Return Me._info End Get Set (value As String) Me._info = value OnPropertyChanged Now because we've hardcoded our data-context in the control it will instead attempt to lookup ColorToUse property on the ColorWithText object not your ViewModel, which will obviously fail. Window in WinUI isn't a FrameworkElement like it is in WPF, and so doesn't inherit the DataContext property. Is it correct to use "the" before "materials used in making buildings are"? UserControlWPF. http://www.nbdtech.com/Blog/archive/2009/02/02/wpf-xaml-data-binding-cheat-sheet.aspx, How Intuit democratizes AI development across teams through reusability. For the desperate souls, who are trying to make pdross's answer work and can't: It's missing an essential detail - Path=DataContext. What is a word for the arcane equivalent of a monastery? The following articles describe design-time data binding in detail: The most important of the design-time attiributes is d:DataContext.