Wpf context menu binding. WPF XAML - MenuItem with ItemSource Jul 9, 2015 · In my xaml, I have used wpf ContextMenu to display the menu items in wpf datagid. Then you can access this property through the PlacementTarget property on the context menu, which is set to the corresponding TreeViewItem. Open Buttons ContextMenu on Left Click. For information on how to associate a command with a menu item, see Command. My Xaml looks something like this: <ItemsControl ItemsSource="{Binding Markers"}>. My problem is that I can't seem to connect my menu to my data context. This is why you always need to check for null or use a flag if you open a context menu from within a ContextMenuOpening event handler. I'm not able to get the ContextMenu part right. Thanks in advance for help. Because of this, setting a binding on the property will not work - it will be changed. Data bound ContextMenu. I have searched high and low across the web for this, and the most common answer seems to be “just do it in the code behind”. Apr 9, 2011 · I found a solution. 2. Tag. You want context sensitive menus to appear under certain conditions. Apr 6, 2011 · I'm fearing that a ContextMenu for each row is overkill even though I'm creating the menu using the ContextMenuOpening event, sort of a "lazy load" for the context menu. . WPF binding command to ContextMenu. May 20, 2016 · I'm trying to construct context menus for a WPF datagrid which are header-specific (in other words, each column header could have it's own context menu different from the other headers). 1 Data bound ContextMenu. DataContext problem: The ContextMenu is displayed in a different visual tree to the rest of the UI. The solution is to utilise a Tag property in the item DataTemplate to hold the data item. A MenuItem can have other MenuItem elements within it as child/sub menus and can go up to several levels. Oct 11, 2013 · How to add menu items to menu control (not contextmenu) in WPF from a database table with Bindings and Observable collections?. The final scenario, writing a handler that suppresses a menu totally, is uncommon. Context Menus Overview But context menu inherit DataContext from its "container", in this case it is Button. Text: Represents the text value for the item. Contextual menus are often used to offer functionality that's relevant within a single control. Apr 17, 2015 · Firstly, just check your parameter values for null:. – Jul 3, 2017 · Set the ContextMenu property of the window. In a submenu ("Colors"), I want to have static entries ("Reset color" and "Custom color") as well a dynamic values. Often, if you need to get to a specific element, the Tag property is used as a temporary storage for the element in order to make binding simpler. Basically, Context Menu is binding to the PackageCM. 18. ParentTaskbarIcon Jan 9, 2010 · Thanks! The problem is that in the end (I mean your code example) we get "g"-the reference to Grid (where my Context Menu XAML declaration is placed), but I need the reference to clicked object which is inside the Grid (inside the Grid I have hundreds of similar objects, each of them can be right-clicked to get a context menu). I can also get the items to show in the submenu if I add them in code, Binding a context menu to a ListBox's Feb 5, 2018 · WPF XAML - Bind Context Menu Item to Main Window DataContext. I also prefer to declare the menus in XAML. Feb 16, 2022 · I feel as though I am rally not getting WPF and particularly MVVM. @VitalyB: As the MSDN docs states, the PlacementTarget property is changed when the context menu opens (to either MousePoint or Center, depending on how the user opens the menu). I have solved this by using the {x:Reference} Markup-Extension which is similar to the 'ElementName' binding but resolves the binding differently, bypassing the visual tree. The below code example shows the context menu with command bindings. 1 WPF binding command to ContextMenu Context menu in WPF DataGrid (SfDataGrid) 4 Apr 2024 24 minutes to read. Nov 18, 2011 · Context Menu Binding in C# WPF. Viewed 1k times 3 When you set an observable collection From the reference: "This property does not associate the input gesture with the menu item; it simply adds text to the menu item. WPF Bind to Element From ContextMenu. I tried the following but its not working. These context menus can be customized. In addition, I'd like to create third kind of context menu if among the selected item is at least one that has some property set. But if I bind the CommandParameters as the {Binding ElementName=TreeViewName} or whatever for that matter, it is always null unless the binded element is a property in the DataContext. I am attempting to do this by binding the IsOpen property of the context menu to the view model, but this is not working as expected. In addition, the data backing the context menu is bound data. First, let's add this part: <DataTemplate DataType="{x:Type YourDataTypeXmlNamespace:YourDataType}"> <Border Tag="{Binding DataContext, RelativeSource={RelativeSource AncestorType={ x:Type YourViewsXmlNamespace:YourViewWhereThisIsDeclared}}}"> Oct 6, 2014 · You need to bind to the PlacementTarget property of the ContextMenu. Jun 21, 2023; 8 minutes to read; The GridControl can display pop-up menus that allow users to manage data (apply grouping and sorting, display summaries, and so on) and customize the View (show or hide its UI elements). Ask Question Asked 8 years, 3 months ago. Jul 3, 2009 · Context Sensitive Menus. It therefore has no access to a DataContext from the main UI visual tree. Each row has a right-click ContextMenu with its own commands. Before reading this tutorial you should get familiar with the Visual Structure of the standard RadContextMenu control. microsoft. WPF has a mechanism for that: the DataTrigger. The context menu itself consists of a series of MenuItem elements and Separator elements. I'm binding the ItemsSource of my MenuItem to an ObservableCollection in my ViewModel. Oct 11, 2013 · What I would like to do is display different menu items within the context menu when the user right clicks one of these list view items. Nov 28, 2016 · WPF Context Menu command Binding. You can create context menu for different rows in an efficient manner. 하지만 WPF에 더욱 적절한 방법은 Commands를 사용하는 것입니다. Should I only use one ContextMenu for the datagrid? But with this I would have some more work regarding the click event, to determine the correct row, etc. This tutorial will walk you through the creation of a RadContextMenu and will show you how to:. You should also set the IsCheckable property to true if you want to be able to check the menu items. Feb 24, 2017 · I want to display context menu for each ListBoxItem (I want to click with right mouse button on ListBoxItem for display menu and then select operation for example deleting ListBoxItem) – radzio Commented Sep 26, 2011 at 11:59 Bind Context Menu inside ItemsControl? 0. – Sep 3, 2013 · Specifying explicitly, without binding a collection you can add sub menus by nesting them. The context menu is defined using a ContextMenu element. That is the route by which elements in the context menu can reach the visual tree. Mar 18, 2010 · Im trying to make the contents of a List thats a dependency property show up in a WPF context menu. Members with has a list of Category object and I want to display the CategoryName on the Context Menu root. DataContext> The MenuItem class holds the information for the menu items. I need to hide the menu items based on the condition. A command to obtain the current temperature from the sensor. Hence the best bet is to walk up the RelativeSource to the context's parent and pull the header text from there: <Window. how to use MenuItem in another MenuItem in wpf. <ContextMenu x Jun 24, 2013 · Context Menu Binding in C# WPF. Sep 4, 2013 · This is a common problem in WPF. Aug 7, 2012 · WPF XAML - Bind Context Menu Item to Main Window DataContext. Viewed 5k times 0 I have tried few solutions given in SO Jun 21, 2023 · Context Menus. The MenuItems in that ContextMenu need to bind to a command on the view model, but the PlacementTarget of the ContextMenu is pointing to the individual item. The application must handle the user's input to carry out the action. ItemsSource - and put a text into a ItemTemplate. WPF data binding with MenuItem in ContextMenu. – Sep 8, 2010 · Because ContextMenu is not in visual tree, binding will not work. Open Context Menu by ctrl+menu. ParentTaskbarIcon from the TaskbarIcon, so i binded the ContextMenu's DataContext to the TaskbarIcon. So far, so good. Apr 20, 2015 · Context Menu Binding in C# WPF. Please help. ContextMenu with Commands and icons. In this case, we want to set a MenuItem's Visibility property to Hidden when the data property IsFileOpen is False. I have it working on a grid ContextMenu but dont see any reason why this wont work on a button. On right click of this image I have a context menu. <ItemsControl. The menu items displayed is dependent on the type of the item selected (i. Can anyone help me with a solution because I think, I have tried all the possible things such as RelativeSource and AncestorType etc but its always null. I'd like to show regular context menu if only one item is selected but to show other context menu (eg. The data source is a ViewModel which has a property EntityCollection (an ObservableCollection) as the ItemsSource of the DataGrid and another collection ContextMenu. It's complaining that "ContextMenu cannot have a logical or visual parent. MVVM binding command to contextmenu item. 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. ItemTemplate>. Setting the context menu's 'NameScope' as suggested by the accepted answer only works if the context menu is not defined in a 'DataTemplate'. This is what I am doing: <Button x:Name="btn" Content="Context Menu"> Aug 8, 2014 · I had a similar problem before and solved it by passing the datacontext through the tag property of the container as below. Aug 28, 2020 · Bind the Tag property of a TreeViewItem to the DataContext of the parent TreeView instead. 5. I saw that in the visual tree, the ContextMenu didn't have its PlacementTarget to point to its parent, the TaskbarIcon (Weird. I have this menu: <Menu HorizontalAlignment="Left" Height="27" Nov 16, 2020 · I have a Contextmenu which contains MenuItems. 0. WPF MVVM ContextMenu binding IsOpen to Model. WPF Command Binding of ContextMenu Item Nov 17, 2015 · Ok, I have found the problem thanks to Ilan's suggestion in the comments of using snoop utility. Context Menu Binding to Parent Feb 28, 2014 · Your problem is that the ContextMenu is displayed in a different visual tree to the rest of the UI. – Sep 21, 2020 · Hi. the type of the underlying view model). IsSeparator: Indicates whether the item is a separator. return parameter == null ? false : _canExecuteMethod((T)parameter); Secondly, this is the old ContextMenu. Aug 27, 2010 · Because a ContextMenu in WPF does not exist within the visual tree of your page/window/control per se, data binding can be a little tricky. Feb 6, 2023 · If you reenter your handler, it becomes infinitely recursive. DataContext> <local:MainVM HeaderText="Jabberwocky" /> </Window. Implementing the ICommand interface manually. com Feb 6, 2023 · The following Extensible Application Markup Language (XAML) example defines a TextBox control that includes a custom context menu. Feb 21, 2017 · WPF: context menu in TreeViewItem binding to root. Creating dynamic WPF context menu. "… Oct 16, 2013 · This magical spell tells WPF to create a permanent binding between the menu's data context and its "placement target" (i. 1> ContextMenu, Popups, DataGridColumns are not part of visual tree. 6 days ago · A command to set the sensor’s threshold temperature. ), but it had an Attached Property called TaskbarIcon. Oct 11, 2017 · Root Menu Item Header are not being bind. Mar 20, 2018 · You cannot find PlacementTarget property in Grid. The most basic way to implement the ICommand interface is to create a custom class that implements the interface’s methods and event. IconUrl: Represents the URL of the image that represents the icon of the menu item. Modified 12 years, 11 months ago. So the binding using ElementName or RelativeSource wont work just like that. Can't bind a ContextMenu action to a Command. Everything works except binding the Command property to the TheCommand property of the MenuItemViewModel class, that represents the menu item. 1 Disable/Enable WPF contextmenu item programmatically. The command is not fired. Etc there can be multiple conditions like Oct 16, 2009 · <ContextMenu> <MenuItem Header="{Binding Text1}" Command={Binding Command1}> <MenuItem Header="{Binding Text2}" Command={Binding Command2}> </ContextMenu> but when I don't know the items in advance (they come from a collection), I need to assign ContextMenu. I have a WPF DataGrid that displays a bunch of rows. Following that, Each Category contains a list of Items which will be showed as submenu. 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 mouse on a specific control or window. I would expect the below to work, but it does not (no items are displayed in the context menu). WPF contextmenu binding works on right-click but not on left-click. I have a class with the following dependency property, a list of Foo's (data holding class): Feb 3, 2017 · In my XAML file I have a DataGrid with a context menu. Dec 3, 2012 · I can get the binding to work on the top level menu. parent) data context, which continues to work even after parent's data context is changed. Display Different Menu Items Depending on Which RadGridView Part Is Clicked; Handle the Menu Items' Clicks; You can have a look at the Row Context Menu and Header Context Menu demos which can be found in the RadGridView section of the WPF Controls Examples. How should I bind a static ICommand to a MenuItem not using a ViewModel binding? I am currently using (which is not working) Command="{x:Static }" but that doesn't seem to work with the solution you have provided here. I would still love to find a definitive explanation of this from the WPF team etc. WPF DataGrid (SfDataGrid) provides an entirely customizable context menu to expose the functionality on user interface. 다음 예제에서는 Context Menu를 사용할 때 두 가지 주요 개념을 보여드리겠습니다: WPF Command의 사용은 더 많은 것을 제공합니다. 6. What am I doing wrong? Sep 20, 2013 · Expanding on this very helpful postIf your ContextMenu has custom buttons or other objects within a ControlTemplate, I have combined the answer above with the answer from Closing ContextMenu with Templated MenuItems so that when a user clicks on the Button, the ContextMenu closes normally only using XAML. Suppressing Any Existing Context Menu and Displaying No Context Menu. SubItems: A collection of the sub menu items of the current menu item. Here is my xaml: <MenuItem Header="_View" ItemsSource="{Binding Windows}"> <MenuItem. 1. Wpf TreeViewItem Contextmenu Command binding not working. Can I suggest you insert a paragraph in your answer explaining that BECAUSE its not in the visual tree, the data context and hence bindings do not update when the content in the content presenter changes due to selecting a tab (assuming that is what causes the problem) Nov 22, 2016 · Eg. To start, first define a RadGridView, which will display a list of Employee objects. The following code adds three children menu items to first menu item. You need this spell only if you expect parent's data context to change during the life of the parent. See full list on learn. Ask Question Asked 12 years, 11 months ago. It gives me the possibility of adding the context menus to the DataTemplates for the various class, thus giving me the polymorphism I like. <DataTemplate>. Sep 20, 2016 · Thanks for this. In the code-behind I will give each ListBoxItem the context menu I find from its visual children. Modified 7 years, 11 months ago. a simple solution is using Proxy Pattern, you can create a wrapper class that inherits from DependencyObject and has a DependencyProperty that will keep a DataContext of your Window, then you can have a resource of the proxy in XAML and finally bind your MenuItem command to your desired command via the proxy object. e. Hot Network Questions Align first row of matrix to The Code-behind for this example only adds one line of interesting code: After the standard InitalizeComponent() call, we assign the "this" reference to the DataContext, which basically just tells the Window that we want itself to be the data context. with some new items added) when more than one item is selected. A DataTrigger sets a control property when a data property is equal to a specific value. If you are binding to the command member outside the scope of 'Control' class then the DataContext should have it so that it is resolved. Like many others, I am trying to bind a ContextMenu to an ObservableCollection to create a dynamic context menu. Every time I feel I have got my head around it something comes along to set me back. WPF Context Menu command Binding. test,RelativeSource={RelativeSource Mode=FindAncestor,AncestorType=ContextMenu}}" /> You could bind the Tag property of the TreeViewItem to the parent window or user control using a {RelativeSource} and then bind the Header property of the MenuItem to the Tag property of the PlacementTarget of the ContextMenu:. Change your binding like this, <MenuItem Header="{Binding PlacementTarget. Nov 3, 2015 · I am new to WPF. I am currently trying to move my code from code behind and have the RelayCommand for the New Connection but cannot get ContextMenu to work. MenuItems which serves as the data source to create a Getting Started with WPF ContextMenu. Also, you cannot set the binding mode to OneWay: Apr 10, 2014 · 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 after another event, such as a left click, or a drag and drop style event. 2> When you want the context menu to not display under particular situation use the triggers to unset the context menu from the visual itself. Oct 14, 2014 · Since the context menu is actually in its own window, binding is a bit trickier. " – Oct 12, 2010 · Are you trying to bind to a control's context menu to a command defined within the control? If so then you should do the binding in that control's XAML and set its DataContext to 'this'. Apr 21, 2016 · Context Menu Binding in C# WPF. injcflg asezt pyt skxg fhsrs vigaen rswy kkejg qjh zvdmvjwu
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