4/5/2024 0 Comments Wpf dynamic treeview example![]() Namespace WpfTutorialSamples.Misc_controls In the next example, I've added a couple of buttons to the firstĮxample which allows us to control the TabControl: Several properties which makes this possible, including SelectedIndex and SelectedItem. ![]() Sometimes you may wish to control which tab is selected programmatically or perhaps get some information about the selected tab. ![]() The tabs as well as customize the color of the text (we could have made it bold, italic or another size as well). This allows us to have an image on each of TabControl.Header element, which contains a StackPanel, which in turn contains an Image and a TextBlock control. The amount of markup might be a bit overwhelming, but as you can probably see once you dig into it, it's all very simple. It, but so can the tab headers! The Header property can be filled with anything you like, which we'll take advantage of in the next example: Obviously the content can be rendered any way you like Once again, WPF proves to be extremely flexible when you want to customize the look of your tabs. The panels with child controls inside of it. I used a Label in this example, but if you want to place more than one control inside of the tab, just use one of The TabItem element comes from the ContentControl class, which means that you may define a single element inside of it that will be shown if the Here's a very basic example: Īs you can see, each tab is represented with a TabItem element, where the text shown on it is controlled by the Header Just like with most other WPF controls, the TabControl is very easy to get started with. Tab controls are commonly used in Windows applications and even within Windows' own interfaces, like the properties dialog for SecondLevelItems.Add("Second Level " & i.The WPF TabControl allows you to split your interface up into different areas, each accessible by clicking on the tab header, usually positioned at the top Level2Items = New ObservableCollection(Of String)() Public ReadOnly Property SecondLevelItems() As ObservableCollection(Of String) Private level2Items As ObservableCollection(Of String) Item.TopLevelName = "item " & i.ToString() Inherits ObservableCollection(Of ItemsForTreeView) SecondLevelItems.Add("Second Level " + i.ToString()) Level2Items ?= new ObservableCollection() Public ObservableCollection SecondLevelItems ![]() public class TreeViewData : ObservableCollection The following example shows the data that the previous example uses. The following example creates a TreeView that sets the VirtualizingStackPanel.IsVirtualizing attached property to true and the VirtualizingStackPanel.VirtualizationMode attached property to VirtualizationMode.Recycling to optimize its performance. You can improve the performance of the TreeView when the user scrolls by setting the VirtualizingStackPanel.VirtualizationMode attached property to VirtualizationMode.Recycling. The UI might also be slow to react when a user scrolls the TreeView by using the mouse wheel or dragging the thumb of a scrollbar. You can improve the load time by setting the VirtualizingStackPanel.IsVirtualizing attached property to true. If a TreeView contains many items, the amount of time it takes to load may cause a significant delay in the user interface.
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