itemscontrol

I need to display something that shows a Week of days along the Columns, and a list of Categories along the Rows, and a list of Tasks that are due in the Cells (See sketch below) I feel like the solution should be simple, but I'm drawing a blank as to how to bind such a thing. Both the Rows, Columns, and data items in the Cells are dynamic based on what week the user is viewing, and ideally I'd like to hide categories that do not have any tasks for the currently viewed Week. I have collection properties for the currently Viewed Week, the list of Categories, and the list of Tasks, and each Task

I want to be able to implement an ItemsControl with dragable items. The reason for the ItemsControl is so I can bind to my ViewModel in the background. I've tried using a Thumb Control in a canvas and it works perfect, except as soon as I stick it in an ItemsControl it stops working. Here is what I tried: <ItemsControl ItemsSource="{Binding MyItems}"> <ItemsControl.ItemTemplate> <DataTemplate> <Thumb Canvas.Left="0" Canvas.Top="0" Width="50" Height="50" DragDelta="MyThumb_DragDelta"/> </DataTemplate> </ItemsControl.ItemTemplate> <ItemsControl.ItemsPanel> <ItemsPanelTemplate> <Canvas /> <

I have a ListBox with many objects displayed, each of which can be a variable height, based on the number of values each object has. See my previous question that was answered here. Many objects are 5-lines high, while others are 1. The scroll bar in the ListBox does not appear to like this, probably due to the virtualization. While you scroll through, the thumb on the scroll bar will change its size , based on how many items are actually fitting into the box at that current moment. This makes the thumb very big at times, and very small at other times. Since this ListBox is also contained

If i have a component derived from ItemsControl , can I access a collection of it's children so that I can loop through them to perform certain actions? I can't seem to find any easy way at the moment. A solution similar to Seb's but probably with better performance : for(int i = 0; i < itemsControl.Items.Count; i++) { UIElement uiElement = (UIElement)itemsControl.ItemContainerGenerator.ContainerFromIndex(i); } Seb Nilsson See if this helps you out: foreach(var item in itemsControl.Items) { UIElement uiElement = (UIElement)itemsControl.ItemContainerGenerator.ContainerFromItem(item); } There is

I have an (non-virtualized) ItemsControl that binds its ItemsSource to a ObeservableCollection of ViewModel instances. Now once the large amount Model instances is loaded all the ViewModel complemnents needs to be added to that ObservableCollection. How can I add a large amount of ViewModels without making the UI Thread hang? I suppose the UI Thread hangs because each time a new item is added the ItemsControl needs to update itself and does layout etc. over and over again. Should I suspend the binding add all items and then resume? If so, how? Should I override the ObservableCollection to

I cannot find any good documentation for the Panel.IstItemsHost attached property. I see plenty of examples of people setting it on the ItemsContainer template for an ItemsControl, but the un-documentation over at MSDN does not explain why or what advantages setting property confers. I have built plenty of containers that do NOT set this property, but have not yet noticed any ill effects. Say I have an ItemsControl. I want to use a custom panel that swoops items in and out as you scroll; its called a SwoopPanel. Now, how do I tell the ItemsControl to use my SwoopPanel to contain the templates

I am writing WPF code to show a real-time plot which is a connected line containing about 10,000 points. It takes about 5 seconds to show a picture in my computer. Does anyone have an idea to make it quicker and within 0.5 second? class eee : FrameworkElement { public eee() { _children = new VisualCollection(this); Random rand = new Random(); DrawingVisual dv = new DrawingVisual(); using (DrawingContext dx = dv.RenderOpen()) { Pen drawingPen = new Pen(Brushes.Black, 1); double x=rand.Next(300); double y = rand.Next(300); for (double i = 0; i < 1000; i = i + 0.1) { y = 100 + rand.Next(100); dx