![]() Var treeViewItem = VisualUpwardSearch(e. Private void MenuTreeView_OnPreviewMouseRightButtonDown(object sender, MouseButtonEventArgs e) For example, if you set the ItemTemplate property on a data-bound TreeView, each TreeViewItem that is generated uses the DataTemplate that was assigned to the ItemTemplate property of the TreeView. / Sets the selection of an item with the right click button before showing It tells WPF to use that character as the accelerator key, which means that the user can press the Alt key followed by the given character, to activate the menu item. This has been updated with nullable annotations in mind. To be clear, the OnPreviewMouseRightButtonDown event goes on the TreeView object in your XAML. You can use this snippet to have it select the item the mouse is over before showing the context menu (just be sure to have appropriate null checks in place). Add a trigger that changes the brush when ContextMenuOpened and IsSelected are both true. Hi, >There should be a specific context. WPFs default behavior is to change the TreeViewItem to gray when the ContextMenu opens, but like virtually everything else in WPF you can override this: In the TreeViewItem Style, bind ContextMenuOpened to 'ContextMenu.IsOpen'. ![]() I want to create a tree view like this: queues - queue1 - queue2. Furthermore I need a specific context menu for the different hierarchical points. This may not be required in your scenario though.The default behavior of a right click on a TreeView in WPF is that it shows the context menu if one is set but it does not select the item that the mouse is over. Hello, I want to create a dynamic tree view from a list in C WPF. Incidentally for TreeViews it is common to use a HierarchicalDataTemplate rather than a plain DataTemplate because this allows for multiple levels of items via the HierarchicalDataTemplate.ItemsSource property. So you should be able to just change your DataTemplate as follows: Integrating the ContextMenu shouldn't be an issue because TextBlock has a ContextMenu property too. Then the command should be placed inside Person. Lets say you have a list of object of type Person. That means it is not the ViewModel but instead the item itself. Therefore, using a TextBlock instead of a TreeViewItem should cure this. In your case the DataContext in ContextMenu is the same as for TreeViewItem. I suspect the use of TreeViewItem rather than TextBlock causes the excessive indenting because you have a (manually created) TreeViewItem in your DataTemplate (which incurs one level of indent) inside another (automatic) TreeViewItem (which incurs another level of indent). Find centralized, trusted content and collaborate around the technologies you use most. If there is no currently selected item, tell. In the click event of the menu (or any other event actually) get the current selected item var node tView.SelectedItem as TreeViewItem. Name the TreeView which the operation in question is occurring such as tView for this example. That's why the samples you've found use TextBlocks instead of TreeViewItems in the DataTemplate. A better way to get the actual treeview item is to do these steps. A TreeView consists of a hierarchy of TreeViewItem controls, which can contain simple text strings and also more complex content, such as Button controls or a StackPanel with embedded content. You would not normally create a DataTemplate containing a TreeViewItem, because the binding infrastructure will be creating the TreeViewItem for you - all your DataTemplate needs to do is specify what should be displayed as the content of the TreeViewItem. This example shows how to create simple or complex TreeView controls. The TreeView should have a context menu, which is specific for each object type.īut with this markup the behavior is as intended, but the child items (the rooms) are indented too much.Īnyway all the bining samples I could find use TextBlock instead of TreeViewItem in the DataTemplate, but wonder how to integrate the ContextMenu there. I'm pretty new to Xaml and need some advise.Ī TreeView should be bound to a hierarchical object structure.
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