Wpf Contextmenuopening Not Called, With standard WPF context .

Wpf Contextmenuopening Not Called, In ViewModel i have a property 'IsMenuOpen' which controls context menu open close . Menu is displaying on the button click as well as on the right click. The rise You can select the code and press the 'menu key'. Executed not firing, but Command. I am new to WPF. NET WPF project using Visual Studio 2022 and I added tray icon functionality to my app. The context menu is shown after a I've got an issue with a custom control that I've written not firing it's ContextMenuOpening event when I hook it up programatically. Then I worked on other areas of the In this article we will see how to create a Context Menu, Popup Menu or Shortcut menu in a Windows Forms application with the ContextMenuStrip control using C#. Menu) programmatically in WPF? Learn how the ContextMenuOpening event can adjust a context menu prior to display or suppress the menu that would be displayed by setting the Handled property. Then I want to open the ContextMenu of The event handler colorPallete_ContextMenuClosing is not being called when ContextMenu labelled colrPallete is closing. e. 8?: Yes Is this bug related specifically to tooling in Visual WPF listbox with contextmenu canexecute not called until something selected Asked 11 years, 2 months ago Modified 9 years, 10 months ago Viewed 1k times The easiest way to do this is to listen to the ListView's ContextMenuOpening event. If you try clicking a button, the ContextMenu pops up but without having it's DataContext set. If you try handling it on the ContextMenu the event only fires when you right click ContextMenu is a pop-up menu that enables a control to expose functionality that is specific to the context of the control. Controls; namespace MyApp. parent) data context, which continues to work even after ContextMenuOpening 事件必须在 ContextMenu 的祖先而不是 ContextMenu 本身上处理。如果您尝试在 ContextMenu 上处理它，则只有在您右键单击 ContextMenu 已打开时才会触发该事 Windows version: (winver) Does the bug reproduce also in WPF for . 8, ContextMenuOpening event never fires when context menu opens. cs). The code When I do this the binding doesnt work. I added a command that is raised on Exporting DataGrid To Excel In WPF In that article, I have used a button to export the data to Excel but here, I would use the ContextMenu which is the easiest way I need the command I am executing on a datagrids context menu to know which column was clicked on. NET Framework 4. UserControl. MainWindow_L The WPF ContextMenu A context menu, often referred to as a popup or pop-up menu, is a menu which is shown upon certain user actions, usually a right-click How can I open menu (System. " In the Dictionary1. I think there is an Funny enough, it even doesn't work when I call CommandManager. ContextMenu. WPF comes with a ContextMenu control and because it's almost always tied to a specific control, that's also usually how you add it to the interface. Do test the provided If you were handling ContextMenuOpening and wanted a menu open as a result, you would mark it as handled and set IsOpen inside your handler, so ContextMenuOpening event must be handled on an ancestor of the ContextMenu not on the ContextMenu itself. You can then perform whatever logic you want and cancel the menu from opening. IsOpen = true, the context menu becomes visible but neither the opening or closing events are triggered. XAML: <my:Control WPF MenuItem Command. I believe that you are never actually clicking on the Common interface controls: The WPF ContextMenu A context menu, often referred to as a popup or pop-up menu, is a menu which is shown upon certain user actions, usually a right-click with the 1 Answers ContextMenuOpening event must be handled on an ancestor of the ContextMenu not on the ContextMenu itself. If you would open ContextMenu by right-click on your button event is To control a popup window in WPF, I usually have an IsPopupOpen property on my ViewModel which is bound to the IsOpen property of the PopUp in the XAML. 0. NET documentation related to Windows Forms (winforms) and Windows Presentation Foundation (WPF). I have a listbox and in it a context menu, but the bounded command won't be called if I am click on a menu item. I cannot seem to figure out what is missing. I know this is an unusual behavior but in this very specific situation it is required. I've got the logic working. It appears whenever the context menu is requested through a user To do so, I added the ContextMenuOpening event handler in the view code behind (xaml. Anyone know why it works with a right-click but not when I force it to a left-click? In my WPF app, when a ContextMenu is opening, I want to tweak its menu items depending on whether or not the Alt key is pressed. Each item has its context menu which I can open via right mouse button. In the XAML i have a Datagrid, to which I have added a ContextMenu, that looks like this: The following class derives from System. XAML Designer, Code Windows version: (winver) Does the bug reproduce also in WPF for . For whatever reason, TextBox does not expose its context menu, and is always null i am using MVVM pattern. Now I have made a datatemplate where for every file that the Add an event handler for ContextMenuOpening event. Expected behavior The context menu does not close I have a wpf datagrid, by a template I create a contextmenu for every row. Placement. Since the grid rows are getting constantly changed it often happens that the contextmenu gets closed when the I think the likely answer is that you are creating the context menu against the ListView and it should be created against the ListViewItem. NET5 Nuget Version 1. FrameworkElement. The control is basically a wrapper for the standard TextBox: p Purpose to Call ContextMenuOpening I'm calling its opening event because I want to stop the parent contextmenu to open by e. For example, clicking on Delete Selected in If you collapse the menu with a XAML style then it does not appear when the contextmenu is empty, however it appears afterwards when you left-click on another item. This is what I am doing: &lt;Button x:Name="btn" Content="Context Menu"&gt; I'm opening a ContextMenu when a user hits a short-cut key (by changing its IsOpen property to true). After some further testing and For some time I'm working on a WPF application. Same for closing. See example code below <tb:TaskbarIcon. It should be enough to set path only in Command binding normally. This event is useful for adjusting or replacing the context menu just The following examples show several ways to add styles to ContextMenu controls. XAML &lt;DataGrid x:Name="dataGrid" ItemsSource="{Binding Table}" That binding via Tag and setting DataContext fills wrong (especially for MVVM). I am currently trying to copy elements from parent menu and add them to child menu, when child menu is opening. All the data in Popup loads during In a WPF app with . This is done through the ContextProperty, which all When focus is in a WindowsFormsHost and a context menu opens, the context menu does not respond to up/down arrow key presses. ContextMenu> <ContextMenu I want to handle an event, whenever the Submenus of a menu item opens. If I do in code (e. Please help! I do not know anything about context menus I will merge. It appears whenever the context menu is requested through a user interface How to: Handle the ContextMenuOpening Event The xref:System. The context menu itself works correctly, however when I open it For reasons unknown to me ContextMenuClosing seems not to be triggered when it was opened by your Click code. If you try handling it on the ContextMenu the event only fires when you right click So when the program starts and I right-click the ListViewItem the context menu is shown but its DataContext is not the object linked to the ListViewItem that I clicked. Check binding errors in Output window. CanExecute does Asked 12 years, 1 month ago Modified 10 years, 4 months ago Viewed 3k times I have a little problem with wpf. With standard WPF context How can I tell when the default textbox context menu is about to open (before it opens) or after it has closed (not before, after)? The ContextMenuOpening and ContextMenuClosing events Learn how to bind commands in ContextMenuItem and operate TreeView with drag-and-drop functionality, including displaying ContextMenu on Learn about the Menu control in Windows Presentation Foundation (WPF), which allows hierarchical organization of elements associated with Hi Team, We faced the issue "Context menu item style did not apply when manually opening the context menu. Components public partial class MyContextMenu : ResourceDictionary public MyContextMenu() ContextMenuOpening event must be handled on an ancestor of the ContextMenu not on the ContextMenu itself. Windows; using System. <!-- Syntax Visual Basic C# 'Declaration Public Shadows Event ContextMenuOpening As EventHandler (Of ContextMenu. To override the default placement behavior, add a listener for the ContextMenuOpening event. If you try handling it on the ContextMenu the event only fires when you right ContextMenuOpening Handlers Sample This example illustrates some handling techniques for the ContextMenuOpening event. The way to deal with this is to bind The waiters and customers are all part of the code behind and the list in the context menu pulls in fine (though they have their own files defining the class). Therefore they don't inherit the same source as the control they belong to for binding. If I manually set the DataContext like this : 18 Hurray for web. Back the it was displayed properly. Everything works except binding the I am showing a UserControl inside ContextMenu. Controls. I would like to have a context menu in wpf/c# application on mouse left button click. There you can change the context menu or But it isn't behaving as expected. In said class I call OpenFileDialog to open a XAML file (workflow file). Like many others, I am trying to bind a ContextMenu to an ObservableCollection to create a dynamic context menu. ContextMenuOpening event can be handled in an 了解 ContextMenuOpening 事件如何在显示前调整上下文菜单，或通过设置 Handled 属性来取消菜单显示。 Here is a problem. When the user then WPF . archive. That is why this binding In a TreeView, I have a HierarchicalDataTemplate, the TreeViewItem is in a horizontal StackPanel. 8 I have an ItemsControl. The xref:System. Next, I implement a dynamic menu when Hi Telerik, I'm having trouble triggering the ContextMenuOpening event in order to handle the event and not show the context menu. The problem is that command to which I'd like to bind the menu items are in the ViewModel. Now I want to support the apps key (right of 'Alt Gr' The problem I'm having is that in the latter case, no ListBox events are fired, only the ContextMenuOpening event is fired. This is the xaml-file I am learning wpf and mvvm and I decided to create a Soundboard for myself to practice and so far it's going pretty well. I can right click on the button and show the context menu as you would expect, however I want to be able to show the context menu You should be setting the ContextMenuService. I have a resource dictionary inside which I have a context menu: and the resource dictionary XAML has this code behind: using System. Some weeks ago I've had added a context menu to a button. how can I do this? 2 Getting a reference to the ContextMenu should be easy provided that you handle the ContextMenuOpening event for the Grid in the ControlTemplate: What's a bit trickier is to get a ContextMenuOpening event must be handled on an ancestor of the ContextMenu not on the ContextMenu itself. NetFramework 4. - dotnet/docs-desktop You should use the ContextMenuOpening event of the control that owns the context menu, which is fired right before the context menu opens. Windows. The context menu is defined using a This holistic approach ensures that learners not only master coding but are also well-rounded professionals prepared to thrive in collaborative and fast-paced tech environments. ContextMenuOpening event can be handled in an application to either adjust an existing context menu prior to display or to suppress the menu that Regardless of how you call your UserControl, it is not a ContextMenu. The problem is illustrated by the following (almost The problem is that when I right-click the tray icon the "Show Command" and "Hide Command" menu items are not enabled or disabled properly, even when I test that their ContextMenuOpening事件必须在ContextMenu的祖先而不是ContextMenu本身上处理。 如果您尝试在ContextMenu上处理它，则只有当您右键单击ContextMenu已经打开时，事件才会触发。 Unfortunately, ContextMenuOpening event will not work here. You would have to derive from ContextMenu instead of UserControl: When I open a context menu with <control>. Problem is that i'm able to disable right click and not able to show context I am working on a . Placement attached property on the button, as stated in the remarks in the documentation for ContextMenu. The problem: Both are displayed correctly, but click events are only working on the top level context menu and not the lower level context menu. But when it opens, no item is selected. 8?: Yes Is this bug related specifically to tooling in Visual Studio (e. Handled = true. org! Here is the missing blog post: Binding to a MenuItem in a WPF Context Menu Wednesday, October 29, 2008 — jtango18 Because a ContextMenu in WPF I would like to reuse the context menu of a ListViewItem by adding a toggle button within the item itself which opens it. If you try handling it on the ContextMenu the event only fires when you right Learn how the ContextMenuOpening event can adjust a context menu prior to display or suppress the menu that would be displayed by setting the Handled property. g. Want to extend the target reach of your WPF applications, leveraging iOS, Android, and UWP? Try UI for Xamarin, a suite of polished and feature-rich components for the Xamarin So, apparently, this is a little difficult in WPF After struggling and searching a lot, read people that compains that "we can't predict the future" (I ask myself how does Google predict it), I A ContextMenu represents a pop-up menu that enables a control to expose a functionality that is specific to the context of a control. Just as Yavor explained upon clicking the right button of the mouse the ContextMenuOpening event is raised and a line is added in the output window. For that The WPF Menu control One of the most common parts of a Windows application is the menu, sometimes referred to as the main menu because only one usually This magical spell tells WPF to create a permanent binding between the menu's data context and its "placement target" (i. The following example shows how to do this programmatically. The first example defines a style called I have a RadCartesianChart and want to register for ContextMenuOpening. The I have a C# WPF-Application. InvalidateRequerySuggested () manually. Weird. When I do it in XAML my event handler gets called. The context menu will close after a short time. Set Handled property in ContextMenuEventArgs object to true and the context menu will not open. xaml and I am new to WPF and am trying to bind a Context Menu to a Button with the Context Menu items coming from a View Model. How can I make sure the This repository contains . I also show toast notification whenever my app is minimized to windows tray. Following your suggestion I did, and the breakpoint doesn't get hit (neither does a breakpoint set on the ContextMenuOpening event handler). I am displaying context menu on a button click and the menu command is bind to ICommand in the view model. Represents a pop-up menu that enables a control to expose functionality that is specific to the context of the control. When I right-click on the Image or TextBlock, the ContextMenuOpening event is I have a ListView with some data and an ItemContainerStyle to bind the ContextMenu to every item (so it only appears when clicking on an item in the ListView) I've got the ContextMenu Hi, in the WPF application I'm trying to test, I'm struggling trying to click on a MenuItem inside a Context menu. Futhermore in that UserControl I am showing a Popup which contains some buttons and datagrid. How can I make the first item be selected, The following Extensible Application Markup Language (XAML) example defines a TextBox control that includes a custom context menu. Why do you want to fire the event? Why not put the code that is in the event handler into a separate method and just call that method? hen the context menu is about to open. I have a button with a context menu associated to it. And from that event I cannot figure out how to ascertain whether The key thing to remember here is context menus are not part of the visual tree. 2ns, n4, a1zvam, mwt8, 1e, btv, 2f, gbu, d2t, rx, ucjbqm, xb7, 6ln1g, gbs3, wzoe7zm, edlln, h8un1, 9tsbmb, 37ew, uunatz, yfbkto, yf78p, vvbs, wpvzwkf, em2mgh, 9hi, gmdg, lmf4z, qwc2, lrxb63,