![]() ![]() In thisĬase, Cut and Copy are disabled because no text is selected, but Paste is enabled, because my clipboard is not empty!Īnd because WPF knows how to handle certain commands in combination with certain controls, in this case the Cut/Copy/Paste commands in combination with a It might not be completely obvious, but by using commands, we just got a whole bunch of things for free: Keyboard shortcuts, text and InputGestureText on the items and WPF automatically enables/disables the items depending on the active control and its state. Private void NewCommand_Executed(object sender, ExecutedRoutedEventArgs e) Private void NewCommand_CanExecute(object sender, CanExecuteRoutedEventArgs e) Public partial class MenuWithCommandsSample : Window ![]() Namespace WpfTutorialSamples.Common_interface_controls Let's jump straight to an example of combining the Menu with WPF commands: The text (Header) of the menu item is also setĪutomatically (although you can overwrite it if needed), and so is the InputGestureText, which shows the user which keyboard shortcut can be used to invoke However, when using commands, WPF is all ears and will respond to keyboard shortcuts automatically. a menu item - you will have to do that manually. Shortcuts automatically if you assign them to e.g. They also make the handling of keyboard shortcuts a whole lot easier, because unlike with WinForms, WPF is not listening for keyboard Using and creating commands, so they have their own category of articles here on the site, but for now, I can tell you that they have a couple ofĪdvantages when used in WPF, especially in combination with a Menu or a Toolbar.įirst of all, they ensure that you can have the same action on a toolbar, a menu and even a context menu, without having to implement the same code in You can easily handle the Click event of a menu item like we did above, but the more common approach is to use WPF commands. This will suffice for the more simple applications, or when prototyping something, but the WPF way is to use a Command for this. In Code-behind you will then need to implement the mnuNew_Click method, like this: private void mnuNew_Click(object sender, RoutedEventArgs e) The easiest way is to simply add a click event handler to the MenuItem, When the user clicks on a menu item, you will usually want something to happen. Whether a given menu item is checked or not. From Code-behind, this is the same property that you can read to know I even used the IsChecked property to have it checked by default. With a standard Image control inside of it, and one where we use the IsCheckable property to allow the user to check and uncheck the item. The WPF MenuItem supports both, and it's very easy to use: įor this example I've created a secondary top-level item, where I've added two items: One with an icon defined, using the Icon property Which can toggle a specific feature on and off. Two common features of a menu item is the icon, used to more easily identify the menu item and what it does, and the ability to have checkable menu items, Hierarchy, meaning that in this example I could press Alt, then F and then N, to activate the New item. This works all the way from the top-level item and down the User can press the Alt key followed by the given character, to activate the menu item. It tells WPF to use that character as the accelerator key, which means that the You should notice the underscore before the first character of each label. I use the Header property to define the label of the item, and I have defined a single top-level item, with 4 child items and a separator. Menu control wherever you like, and in any width or height that you may desire. Let's jump straightĪs in most Windows applications, my menu is placed in the top of the window, but in keeping with the enormous flexibility of WPF, you can actually place a MenuItem can have a range of sub-items, allowing you to create hierarchical menus as you know them from a lot of Windows applications. Adding items to it is very simple - you simply add MenuItem elements to it, and each WPF comes with a fine control for creating menus called. Replacement for the good, old menu and toolbars, they definitely still have their place in every good developer's toolbox. The menu is practical because it offers a lot of options, using only very little space, and even though Microsoft is pushing the Ribbon as a One of the most common parts of a Windows application is the menu, sometimes referred to as the main menu because only one usually exists in theĪpplication. Common interface controls: The WPF Menu control
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