Questions tagged [uielement]

UIElement is a base class for most of the objects that have visual appearance and can process basic input as part of the user interface.

404 questions
0
votes
1 answer

How to copy an UIElement fast?

I need to copy an UIElement. I searched for a solution and found this example: string saved = XamlWriter.Save(canvas1); StringReader sReader = new StringReader(saved); XmlReader xReader = XmlReader.Create(sReader); Canvas newCanvas =…
yonit
  • 1
  • 3
0
votes
2 answers

Acess uiviewController element from another class

there is this project im working on, but there is a problem with the element in the viewcontroller of my storyboard which i want to change its property from another class! my first approach was instantiating an object from the viewcontroller in my…
sci3nt15t
  • 93
  • 1
  • 8
0
votes
2 answers

How can I find an UIElement using Linq?

I am trying like this, but I get only the first level textbox. How do I query and get all the textboxes IEnumerable textboxes = from c in this.LayoutRoot.Children where c.GetType() == typeof(TextBox) select…
coder
  • 4,121
  • 14
  • 53
  • 88
0
votes
1 answer

Selecting image from StackPanel C# UWP (Adding action listener to UIElement and Image to UIElement)

I am using C# and I am creating UWP app. I am using Windons.Ui.Xaml.Controls.Image and I have created follwoing code which lists my images UxHelpers.DispatchToASTAThread( async () => { imageIndex++; StackPanel stackPanel = new StackPanel(); …
0
votes
1 answer

Which events are suppressed by IsHitTestVisible

I cannot find the answer in MSDN documentation. All I want is a list of UIElement's events which are suppressed when IsHitTestVisible = false. It must be here somewhere but I can't find it. It is for a UWP project but I'm guessing it will be almost…
Paulustrious
  • 609
  • 1
  • 11
  • 17
0
votes
1 answer

Silverlight Drag and drop for any UIElement?

I see a great deal of writing about Silverlight 4's support for drag and drop. However, it is all about files. I want to just make normal user controls draggable. Is this possible, or is it limited to files?
Nick Heiner
  • 119,074
  • 188
  • 476
  • 699
0
votes
1 answer

C# - Click event on multiple UIElement types collection

I'm displaying a collection of UI elements of different types (Rectangles and Images) in the canvas. Both derive from the UIElement type.
xa19
  • 43
  • 1
  • 7
0
votes
1 answer

Render of UIElement Causes App To Hang For Several Seconds

I have a WPF application - using MVVM for the design pattern. In the Main View, there is a ContentPresenter that is bound to a property in the corresponding ViewModel. I have type-referential DataTemplate for the data type associated with that…
Chris
  • 2,148
  • 8
  • 31
  • 52
0
votes
1 answer

LINQ to delete UIElement in SilverLight Children

foreach (UIElement el in GridBoard.Children.ToList()) { if (el is Ellipse) { GridBoard.Children.Remove(el); } } Is there any LINQ equivalent to do the above? If yes, can please provide the code? Thanks
TechTravelThink
  • 3,014
  • 3
  • 20
  • 13
0
votes
1 answer

How can I reparent a WPF UIElement?

How can I reparent an UIElement to another Window? I have set Content to null prior to closing the Window. Afterwards a new Window is started and the UIElement is set to the Content of that Window. This gives an InvalidOperationException: "Het…
Wouter
  • 2,170
  • 1
  • 28
  • 58
0
votes
1 answer

Force a repaint of a custom drawn UIElement in a custom WPF control

I'm working on a custom WPF control. The main purpose of this control is to visualize thousands of graphical primitives in a scrollable area. The core part of the control's template looks like this:
TecMan
  • 2,743
  • 2
  • 30
  • 64
0
votes
1 answer

How do I bind touch manipulation to a UIElement property on Windows Phone 7?

I would like to have a property of a UIElement be modified when the user swipes vertically on the screen in Windows Phone 7. I can see how to do it using the OnManipulationDelta override but it seems like that should be a Xaml binding of some sort…
dkackman
  • 15,179
  • 13
  • 69
  • 123
0
votes
1 answer

Children of 'System.Windows.Controls.UIElementCollection' cannot be null. Object derived from UIElement expected

I got this exception and don't know what to do with it. I'm using a TreeListView that I found on the net: Has…
Erez
  • 6,405
  • 14
  • 70
  • 124
0
votes
1 answer

Route KeyUpEvent from UIElement to a TextBox

How do I route the KeyUpEvent event for a UIElement to a TextBox in WPF? For example with the following objects: If an 'A' is pressed on rectangleWPF then an 'A'…
Jannes
  • 1
0
votes
1 answer

Silverlight Binding properties of a UIElement to properties of another UIElement dynamically

A list of ellipses and lines are added as Children to LayoutRoot. Lines are connecting between ellipses. How can I bind these two elements together so that when ellipse moves lines should also move? How can I bind the…
async
  • 45
  • 1
  • 6