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Client Export Manager. Page Layout. Image Gallery. Media Player. Color Picker. Image Editor. Data Visualization. Binary Image. Chart HTML5. Org Chart. Tab Strip. File Explorer. Upload Async.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.
Contextual menus are often used to offer functionality that's relevant within a single control. 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.
Binding a ContextMenu in a TreeView
This is done through the ContextProperty, which all controls exposes it comes from the FrameworkElement which most WPF controls inherits from. Consider the next example to see how it's done:. If you've already read the chapter on the regular menu, you will soon realize that the ContextMenu works exactly the same way, and no wonder, since they both inherit the MenuBase class. Just like we saw in the examples on using the regular Menu, you can of course add Click events to these items to handle when the user clicks on them, but a more WPF-suitable way is to use Commands.
In this next example, I'm going to show you two key concepts when using the ContextMenu: The usage of WPF Commands, which will provide us with lots of functionality including a Click event handler, a text and a shortcut text, simply by assigning something to the Command property.
I will also show you to use icons on your ContextMenu items. Have a look:. Try running the example and see for yourself how much functionality we get for free by assigning commands to the items. Also notice how fairly simple it is to use icons on the menu items of the ContextMenu. So far, the ContextMenu has been invoked when right-clicking on the control to which it belongs.Wintertodt rewards levels
WPF does this for us automatically, when we assign it to the ContextMenu property. However, in some situations, you might very well want to invoke it manually from code. This is pretty easy as well, so let's re-use the first example to demonstrate it with:.
The first thing you should notice is that I've moved the ContextMenu away from the button. Instead, I've added it as a resource of the Window, to make it available from all everywhere within the Window.
Creating dynamic ContextMenu for TreeView in WPF
This also makes it a lot easier to find when we need to show it. The Button now has a Click event handler, which I handle in Code-behind.Ryzen turbo boost
From there, I simply find the ContextMenu instance within the window resources and then I do two things: I set it's PlacementTarget property, which tells WPF which element it should calculate the position based on, and then I set the IsOpen to true, to open the menu. That's all you need!
WPF Tutorial. Previous Next.Tree structures are part of today's interactive web development. These structures allow us to show hierarchical information on our web pages. To accomplish such structures, nothing is easier than using the tree view control shipped by Microsoft within ASP.
NET 2. This tree control has the ability to consume hierarchical data sources like XML files and then display the information.Bitmex ceo net worth
The client-side user can expand and collapse nodes and click on nodes to send requests to the server. Today's need for user interaction is much higher than that provided by the tree view control. This control would have more flexibility if the programmers were able to capture several other client-side events, thus providing the users more advanced features on the tree structure. The programmer can decide to create a tree view with the help of the tools available in Visual Studio or can program the tree view in the source.
Does not include the toolbar, scrollbars, etc. Returns an integer representing the pixels the current document has been scrolled from the upper left corner of the window, horizontally and vertically, respectively. Returns the mouse coordinates at the time of the event relative to upper-left corner of the window. Retrieves the width and height of the object relative to the layout or coordinate parent, as specified by the offsetParent property.
Style: The Style object of the DOM allows you to dynamically change the values of your CSS properties, whether defined inline or via an external style sheet. The changes are instantly reflected on the page. Internet Explorer 4. For example, if a button is clicked, the click event is directed to the button.This example displays different context menus when you right-click on different kinds of nodes in a TreeView control.
In this example, different nodes represent factories, groups, or individuals. Different node types display different context menus. When it starts, the program adds data to its TreeView control just as the example Display tooltips for TreeView nodes in C does.Styropor ziegel haus
When you press the right mouse button down over a node, the following MouseDown event handler executes. If the mouse button is not the right button, the code does nothing.
If the node is nullthe event handler then exits. I know this is simple, but this is one of those things that I dont have to do frequently enough to ever permanently remember it never written to my hard drive and eventually released from my RAM :and I can never find a past project when I need it to remind me how to do the hit test.
This is an absolutely perfect reference. Bookmarked and screen grabbed for safe keeping. I know what you mean. More than a few of my posts are there at least in part so I can find them again later.
Your email address will not be published. This site uses Akismet to reduce spam. Learn how your comment data is processed. C Helper. Skip to content. GetNodeAt e. Y ; trvOrg. Tag is FactoryData ctxFactory. Show trvOrg, new Point e. Tag is GroupData ctxGroup. Tag is PersonData ctxPerson. This entry was posted in controlsuser interface and tagged CC programmingcontext menuscontextmenucontrolsexampleexample programTreeNodeTreeViewuser interfaceWindows Forms programming.
You could define the ContextMenu s in several styles and select the style using a ItemContainerStyleSelectorbased on those attributes. Or you could directly specify an ItemContainerStyle and select the appropriate ContextMenu using triggers. Learn more. Asked 10 years, 7 months ago.Bhushan ahire caste
Active 3 years, 5 months ago. Viewed 38k times. Ian Ringrose Active Oldest Votes. Resources["SolutionContext"] as System. ContextMenu; break; case "Folder": SolutionTree. Resources["FolderContext"] as System. Sometimes it is just easier to do it in code rather than xaml. I'm not a purest and this works well.
Thanks Mr T. Right clicking does not select the node. Paul stackoverflow. Thomas Levesque Thomas Levesque k 57 57 gold badges silver badges bronze badges. Sounds like a better approach.
Need to still learn styles.The parents of a node called File could be New, Open and Add. A Context Menu is a menu that only appears when you click some element with the right button of your mouse. First we have to name the TreeView in order to access their elements in procedural code. This event will allows us to show the Context Menu each time the user clicks an item in the TreeView. Finally we can do the rest in procedural code. Code 3 — C code. This function must have the same name as given in Code 2 to the property SelectedItemChanged.
In line 2 we use the name that we gave to the TreeView in Code 2 in order to have access to the item that is currently selected. I just want to focus on three aspects in this function. First in line 3 were i use the special word as.
In our case the event Click in the menuItem is handle by the function OptionClick. The final aspect that i want to focus is form line 42 to This behaviour is here in case you add a new item to the TreeView when you click Insert.
We could define a special menu for this case but i decided that this new item in the TreeView will have no ContextMenu. So the default is doing just this, creating a new ContextMenu and then set is Visibility to Hidden. Code 4 — SelectedClick Function. Finally we have the function responsible to handle the click event of the Insert button on the context menu. Unboxing simply means that you take a object and you convert this object to is type. Code 5 — OptionClick Function.
You are commenting using your WordPress. You are commenting using your Google account. You are commenting using your Twitter account. You are commenting using your Facebook account. Notify me of new comments via email. Notify me of new posts via email. About Subscribe to RSS.Sharing a simple example wherein we are generating dynamic menuitems for the context menu based on the node or treeviewitem selected in the treeview.
I love working in and sharing everything about Microsoft. NET technology! View all posts by Nishant Rana. Hi, can you upload or send me the project? I trying to load the Packages. I will appreciate it. Like Like. You should also check to see if item is null and if so, return before attempting to do anything further.
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WPF TreeView with ContextMenu
Notify me of new posts via email. This site uses Akismet to reduce spam. Learn how your comment data is processed. Skip to content. Share this: Email Tweet. Like this: Like Loading Author: Nishant Rana I love working in and sharing everything about Microsoft.
Context Menu on TreeView
Have you an idea to do the ame thing using MVVM pattern? You should also check to see if item is null and if so, return before attempting to do anything further, Like Like. Please share your thoughts Cancel reply Enter your comment here Fill in your details below or click an icon to log in:. Email Address never made public. Post was not sent - check your email addresses!
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