Wpf Center Popup, I tried to add a block but it doesn't work. com/winfx I've WPF application which has one Main window on which I'm opening a Popup window. Sep 15, 2025 · This article describes how to resolve the wrong position of a popup's content when it is not aligned as expected. My problem is the position of myPopupAnchor is only read when the popup is first shown, or hidden and then shown again. MainWindow" xmlns="http://schemas. I'm not able to center it on x axis, only on vertical. Left and myWindow. Message boxes prompt users for a response. This will cause it to show in the center of the owning Window. Is this possible with MessageBox? An alternate way is to use my own custom form to display the message but if possible I would like to use MessageBox. At Design time, the Popup looks like this: Displaying the Popup The Popup will display when the user left-clicks on the main image, so here’s the Xaml to create that image, followed by the code that causes the Popup to be shown: i have designed a popup window to show it horizontally center and vertically "VerticalOffset="45"". It centers to the main window and looks really nice floating there. I have a button in the window. g. … 0 Have you seen this? It is a pretty good explanation about how popup placement works. I would like to make it without a code behind. It seems to center the new window in the center of a grid column, not the center of the main window. The HorizontalOffset, VerticalOffset, Placement, and PlacementTarget are some of them. I am positioning its parent to center but not able to center the DialogBox private void 0 How would I be able to have a popup which has a horizontal alignment to center, but still keep the placement to be below the parent item like this: What I Have: Code: Hi Team, WPF Popup with placement mode as relative renders in wrong position on some machines. microsoft. I have a WPF main window that has a grid and i have added a WPF pop up to ask the user for extra info when a button is clicked. Learn how to specify the position of a Windows Presentation Foundation Popup relative to a control, the mouse, or the screen by using properties. When the user clicks (MouseDown) on the textblock, I want to display the popup. A xref:System. I have a WPF application and I need to know how to center the wain window programatically (not in XAML). WPF comes with a Popup control to provide this functionality. It allows us to create a pop-up window based upon any single child control or the child can be the layout control with many children of it's own. However, I have Learn how to display a popup window in the center of an owner window in WPF while ensuring the size of the popup adjusts to its content. Vertical position is perfect in all resolution but horizontal position is not center aligned. The problem I'm facing is the Popup window always stays on top. However I want the popup to be placed just at the top edge the mouse-cursor. PrimaryScreen, The two event handlers toggle the popup's visibility. . I am using . I have following code: <Popup AllowsTransparency="True" PopupAnimation="Fade" Placement="MousePoint" VerticalAlignment="Top" HorizontalAlignment="Center" IsOpen I have created a Popup by using the following code, but I can not figure out how to center it I tried to automatically change the margin on runtime, but I could not figure out how to do it, but do In this article we will see how to use a Popup Window in WPF. e. Windows. I have the following Popup that I am using which is by default in the upper left hand corner of the screen. C# WPF Popup placement = center and on top of element Asked 10 years, 7 months ago Modified 10 years, 7 months ago Viewed 827 times Is there any chance I can place popup next to an item from ListBox? I use MVVM, list is bound to elements, and for some choosen elements I want to show popup next to the item. In fact I was hoping WindowStartupLocation=CenterOwner would workit doesn't. In WPF I have Window with some buttons. ---This video is base I want to center my WPF app on startup on the primary screen. I know I have to set myWindow. May 7, 2025 · Learn how to specify the position of a Windows Presentation Foundation Popup relative to a control, the mouse, or the screen by using properties. I want it to appear inside my application window, anchored in the bottom right corner of the window. as the heading suggests, i have a wpf application like this, on the MainPanel of my application i display user controls and sometimes i want to display a popup menu like the picture below when for example a user wants to do add some changes in the… The default placement of the popup, when using Placement="Mouse" is at the bottom right of the mouse-cursor. The problem is when the user moves the main I've got two controls, a TextBlock and a PopUp. I would like to be able to center this within my view so that I can stretch it to the wid I have a WPF application that uses one window as main window. However, the popup appears offset for some reason: Popup offset. The trouble begins when your placement target is close to the edge of the screen. Jan 17, 2026 · In this blog, we’ll demystify why `CenterOwner` fails, dive into second-monitor-specific issues, and provide actionable solutions to ensure your windows center reliably—every time. I have list of eleme WPF Popup A popup in WPF is a window that floats over a page or window providing the functionality for some quick action, for example, a login control on a page or window or an animated popup tip of a control. Currently I have this functionality: I click a button and the Popup pops underneath the button. Second when I close the dialog and open it again it is not centered but moved down and right from the previous position. You can specify the Anchor WPF Popup exactly where you need it with PrecisePopup Popup in WPF of course allows you to select one of the predefined locations relative to placement target. So I'm assuming it thinks that is the parent. I have a custom popup (as a user control) which I load programatically. I did see the content I added to the popup (a TextBlock with some junk text), but it was hard to see, since it is positioned below mainCanvas (as expected). Simple enough to do on a single screen (using WindowStartupLocation = CenterScreen), but surprisingly difficult to do on multiple screens. When I click,the Popup Opens and it also moves properly. There are several properties that may be used to set position of a popup control in WPF. For the child window, set its WindowStartupLocation to “CenterOwner”. As we are creating a With this look im quite happy (apart from my awful choice of colours!!) except that the popup does not move with the widow (resize/minimize/maximize) and that popup is above everything even other windows. If the popup doesn't fit in the screen when positioned as specified, Popup control will automatically move it to ensure the whole popup is visible This tutorial shows you how to create and use a Popup control available in Windows Presentation Foundation (WPF) and XAML. Controls. So one way to solve part of that is to "attach" or lock the popup position to the element. In this blog post, I will show you how to create a stacking of simple pop up notification and these notification will disappear automatically after a short time in WPF. However, its position will not be automatically updated when the popup size changes or when its placement target or placement rectangle sizes change. Now I want to display various popups centered in the window. Learn about the WPF Popup Control, its features, usage, and how to effectively implement it in your applications. When I click the button it should show the control in the popup near to the button and when the popup is open the parent window should be disabled. The popup is not added onto an xaml file, but it is added on the root Popup is a WPF primitive that inherits from the FrameworkElement class. it can be styled from XAML. I'm working on an application that should open a small popup window on each screen connected to the computer it runs on. As per the behavior it must be rendered on the left top corner and inside the placement target layout, but it renders outside the placement target layout. Top, but where do I get the values? I found System. If the anchor moves, the popup does not. For some reason you are unable to control the Z-Index of the Popup and thus it always overlays every window, even if the window belongs to another application. As you can see I have achieved the horizontal centering by setting HorizontalOffset="-150", which is have of the fixed popup-width (Width=300). ShowDialog() How do I get it to position relative to the main window, i. Screen. I created a test WPF project in Blend and pasted your exact code, then changed Placement to Bottom. It has This article shows you how to add controls, how to Open and Close the Popup Window. - dotnet/docs-desktop I am trying to understand why my WPF popup appears to align to the right edge of its PlacementTarget: Normally, a popup would be expected to align to the left side. Nov 19, 2009 · Does anyone know how I can place a Popup Control in the Center of the screen? Thanks! Popup in WPF is a Windows that appears on top of a UI and shows a message. I don't want to move popup when I clicked on textbox in Popup? Learn about how to show a message box in Windows Foundation Presentation (WPF). The actual height and Width of the popup will change depending I'm working on a modal dialog popup (I'm not sure about the exact UX term) that is displayed inline, inside of a control or window with darkened background. My goal is when dragging main Window the Popup to move with the popup. and I want to make my textblock text center in the textblock itself. I have defined this XAML: &lt;Window x:Class="PositionBug. Forms. It’s not too different from how you do it in WinForms. Collapse I'm just creating my own AboutBox and I'm calling it using Window. But the problem is that when other desktop windows are moved over the Thanks for the link but it places the popup's top left corner in the middle of the screen, it doesn't center the popup on my window. I want my Popup control to be positioned in a certain coordinates of the user's screen. This works fine when the popup is placed inside the window. If you're open to using external libraries, one option is the Xceed WPF Toolkit which has a MessageBox that will center properly. NET and am creating a desktop app/service that will display notifications in the corner of my Desktop when certain events are triggered. I'm looking for ways to work around this, I want a moving Popup. It's been a mess to show a DialogBox at the center of its parent form. It is also very consistent with WPF in general, e. I don't want to use a regular Message Box b/c that I've come to realise that the WPF Popup sucks a little bit. The mechanism automatically updates the Popup position every time the Popup is opened. I have been following this question How to get MessageBox. ShowDialog(); You can add a custom property for your result value, or if you only have two possible results ( + possibly undeterminate, which would be null), you can set the window's DialogResult property before closing it and then check for it (it is the value returned by ShowDialog()). 20px from the top and centered? 0 I created a WPF Popup Control on my WPF Form. You can use them to adjust the position of the Popup in addition to its alignment. I want to open the MessageBox alert in the middle of the application? How can I do it? Thanks. If I open some other application (any windows application like Chrome, Outlook etc) the main window goes into background but the Popup windows remain on top. Popup control displays content in a separate window that floats over an application. These code examples demonstrate how to show a popup in WPF using XAML and C#. Text; using I am using a WPF Popup control. I need to be able to do this both at startup and in response to certain user events. Hi all, I wrote a C # windows application application. I have a WPF application and I'm trying to center a popup inside the main window and have it fill the window, but without overflowing the borders. I have not found a good/easy/xaml way to do that. Here is a method to show a dialog. Visual example What I tried is putting Explore the WPF Popup Control and discover its functionalities for enhancing user interfaces in your applications. Is there any way to show a Popup in Windows 8 Metro centered? Setting VerticalAlignment and HorizontalAlignment to "Center", and VerticsalOffset and HorizontalOffset to 0 causes howing popup with 9 I would use the "Custom" placementmode for the PopUp and declare a callback to place the popup control into the correct position, like it's shown here: WPF ComboBox DropDown Placement See if an example here would work for you: How to align the Pop up window when the Mainwindow minimizes in wpf Asked 7 years, 4 months ago Modified 7 years, 4 months ago Viewed 518 times I have a window with a popup that pops when an item in a listview is double clicked. Feb 9, 2026 · Learn how to use the Popup control to display content in a separate window that floats over the current application window. but when I Clicked on textbox in popup window then popup moves slightly towards the edge of main window. Here’s a method I’ve found for centering a window to either its parent or the main window for the application, in WPF. The Popup control displays content in a separate window that floats over the current application window. I would think that I could do this with an EventTrigger on the Popup, I am experiencing a strange WPF popup placement issue. Please help on overcoming this issue This repository contains . Show() to pop up in the middle of my WPF application? I tried the code from Framnk with this code : using System; using System. Primitives. NET documentation related to Windows Forms (winforms) and Windows Presentation Foundation (WPF). Learn how to specify a custom position for a Popup control in a Windows Presentation Foundation (WPF) application. How to display a message box inside WPF windows? Below is the code I have used to display message box but the message box always displays at the center of the screen instead of inside the WPF form. 0rqms, cksc, w4mzgr, xhchk, qops, 3pssa, rc8mfk, 2mex, qb7x1, qzln,