824 questions with XAML-related tags

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Dialog box before launching of application in winui3 c++/winrt

I am working in winui3 c++/winrt and I need to show a dialog box just before the launch of my application The dialog box will say OK and Cancel on click of OK we launch the application and on cancel we exit. I tried a few approaches but it is giving…

Windows App SDK
Windows App SDK
A set of Microsoft open-source libraries, frameworks, components, and tools to be used in apps to access Windows platform functionality on many versions of Windows. Previously known as Project Reunion.
804 questions
C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
3,806 questions
XAML
XAML
A language based on Extensible Markup Language (XML) that enables developers to specify a hierarchy of objects with a set of properties and logic.
824 questions
asked 2024-12-18T06:27:05.37+00:00
Vivek Rao 20 Reputation points
commented 2024-12-24T08:27:09.67+00:00
Roy Li - MSFT 33,501 Reputation points Microsoft Vendor
2 answers

How to know whether the snap applied in windows 11 windows. Is there any API.

Is there a method or any API to tell if snap is enabled or disabled in Windows 11? Please answer if there is any other way.

Windows Presentation Foundation
Windows Presentation Foundation
A part of the .NET Framework that provides a unified programming model for building line-of-business desktop applications on Windows.
2,804 questions
C#
C#
An object-oriented and type-safe programming language that has its roots in the C family of languages and includes support for component-oriented programming.
11,152 questions
XAML
XAML
A language based on Extensible Markup Language (XML) that enables developers to specify a hierarchy of objects with a set of properties and logic.
824 questions
Windows 11
Windows 11
A Microsoft operating system designed for productivity, creativity, and ease of use.
10,278 questions
asked 2022-04-26T04:51:23.56+00:00
visi venkat 1 Reputation point
commented 2024-12-20T17:31:21.45+00:00
patrickpark 0 Reputation points
1 answer

Understanding AppShell.xaml's structure

I'm building my first .NET MAUI app and I sort of understand what's going on in AppShell.xaml, but not really. I'm guessing I don't have them "structured" properly for navigation to go back and forth between views. My app is fairly straight…

.NET MAUI
.NET MAUI
A Microsoft open-source framework for building native device applications spanning mobile, tablet, and desktop.
3,764 questions
XAML
XAML
A language based on Extensible Markup Language (XML) that enables developers to specify a hierarchy of objects with a set of properties and logic.
824 questions
asked 2024-12-14T00:17:22.1766667+00:00
n0kx 1 Reputation point
commented 2024-12-20T05:31:33.96+00:00
Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 46,206 Reputation points Microsoft Vendor
1 answer

An exception is given when trying to manipulate UI when the packageCatalogUninstalling event is triggered WinUI

Hello! I'm testing an application that uses PackageCatalog.Uninstalling event and i would like to change the UI when this event is triggered but when i try to do it an exception is given. I also tried with a dispatcher but received another error

Windows App SDK
Windows App SDK
A set of Microsoft open-source libraries, frameworks, components, and tools to be used in apps to access Windows platform functionality on many versions of Windows. Previously known as Project Reunion.
804 questions
XAML
XAML
A language based on Extensible Markup Language (XML) that enables developers to specify a hierarchy of objects with a set of properties and logic.
824 questions
asked 2024-12-03T19:14:54.59+00:00
Andre Luiz Bacelar Gonçalves de Menezes 5 Reputation points
edited a comment 2024-12-19T12:07:06.4666667+00:00
Anderson Rodrigues Cavalcante 316 Reputation points
1 answer

After migrating to VB.NET Core 9.0 from 8.0, I am getting error messages on menu bindings

After migrating from version 8.0 to version 9.0, I am getting error messages related to the binding of menu items. I am working with Visual Studio 17.12.3 and .NET Core 9.0.101 on a Windows 11 (23H2) machine. Further down in the XAML code, I have the…

Entity Framework Core
Entity Framework Core
A lightweight, extensible, open-source, and cross-platform version of the Entity Framework data access technology.
767 questions
Windows Presentation Foundation
Windows Presentation Foundation
A part of the .NET Framework that provides a unified programming model for building line-of-business desktop applications on Windows.
2,804 questions
VB
VB
An object-oriented programming language developed by Microsoft that is implemented on the .NET Framework. Previously known as Visual Basic .NET.
2,760 questions
XAML
XAML
A language based on Extensible Markup Language (XML) that enables developers to specify a hierarchy of objects with a set of properties and logic.
824 questions
asked 2024-12-07T10:11:36.7266667+00:00
Mike van der Waard 0 Reputation points
commented 2024-12-16T01:03:26.5166667+00:00
Hongrui Yu-MSFT 3,645 Reputation points Microsoft Vendor
1 answer One of the answers was accepted by the question author.

How to get DataGrid object of TabControl.ContentTemplate

Dear all, I have a control using ContentTemplate and i would like to binding the Visibility properties with viewModel but that error 'Cannot find governing FrameworkElement or FrameworkContentElement for target element'. This is control in xaml: …

.NET
.NET
Microsoft Technologies based on the .NET software framework.
4,008 questions
Windows Presentation Foundation
Windows Presentation Foundation
A part of the .NET Framework that provides a unified programming model for building line-of-business desktop applications on Windows.
2,804 questions
XAML
XAML
A language based on Extensible Markup Language (XML) that enables developers to specify a hierarchy of objects with a set of properties and logic.
824 questions
asked 2024-12-11T05:02:59.11+00:00
Lê quang Thắng 20 Reputation points
accepted 2024-12-11T10:20:45.1733333+00:00
Lê quang Thắng 20 Reputation points
0 answers

Struggling to change the combobox mouseover effect on a dark background

Hi, hope someone can help, I tried to follow some answers here but I am not able to change the ugly default mouse over effect on my combobox. I want to keep the same style as before hovering with the mouse. I am really struggling with it. Below my…

XAML
XAML
A language based on Extensible Markup Language (XML) that enables developers to specify a hierarchy of objects with a set of properties and logic.
824 questions
asked 2024-12-04T10:27:55.9466667+00:00
Marcello Dichiera 0 Reputation points
1 answer

.NET MAUI QueryProperty: Data not passed to another page

I'm developing a drawing application using .NET MAUI and Firestore. On the HomePage, I display a list of existing drawings. When I select one, I want to navigate to the DrawPage and open the selected drawing for modification. However, the DrawingID…

.NET
.NET
Microsoft Technologies based on the .NET software framework.
4,008 questions
.NET MAUI
.NET MAUI
A Microsoft open-source framework for building native device applications spanning mobile, tablet, and desktop.
3,764 questions
C#
C#
An object-oriented and type-safe programming language that has its roots in the C family of languages and includes support for component-oriented programming.
11,152 questions
XAML
XAML
A language based on Extensible Markup Language (XML) that enables developers to specify a hierarchy of objects with a set of properties and logic.
824 questions
asked 2024-12-01T12:13:55.06+00:00
Szepesi Szilvia Vanda 0 Reputation points
commented 2024-12-04T00:29:36.6466667+00:00
Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 46,206 Reputation points Microsoft Vendor
0 answers

System.NullReferenceException: 'Object reference not set to an instance of an object.' when navigating to page in WinUI

I am working with a WinUI project which is built based on the MVVM Toolkit template. When I use NavigationService.NavigateTo(typeof(EmployeeViewModel).FullName!); to navigate to EmployeePage, the program crashes with the bug that…

Windows App SDK
Windows App SDK
A set of Microsoft open-source libraries, frameworks, components, and tools to be used in apps to access Windows platform functionality on many versions of Windows. Previously known as Project Reunion.
804 questions
C#
C#
An object-oriented and type-safe programming language that has its roots in the C family of languages and includes support for component-oriented programming.
11,152 questions
XAML
XAML
A language based on Extensible Markup Language (XML) that enables developers to specify a hierarchy of objects with a set of properties and logic.
824 questions
asked 2024-11-23T09:39:11.4333333+00:00
LÊ CAO TUẤN VŨ 0 Reputation points
commented 2024-11-28T01:32:38.5666667+00:00
Roy Li - MSFT 33,501 Reputation points Microsoft Vendor
4 answers

Editor controls in grid don't resize correctly after grid and row compressed to zero width and expanded back

Editor controls in a 3x3 grid don't resize correctly after compressing one of the rows and columns to 0 width and height and expanding it back to normal size. The bug is only present on the windows platform using Editor controls. Resizing works correctly…

.NET MAUI
.NET MAUI
A Microsoft open-source framework for building native device applications spanning mobile, tablet, and desktop.
3,764 questions
XAML
XAML
A language based on Extensible Markup Language (XML) that enables developers to specify a hierarchy of objects with a set of properties and logic.
824 questions
asked 2024-09-24T04:33:12.63+00:00
TazKing 85 Reputation points
answered 2024-11-24T08:26:16.2433333+00:00
TazKing 85 Reputation points
1 answer One of the answers was accepted by the question author.

Sometimes click something in The WebView2 Page will open a new Microsoft Edge Window,could we show it in the Webview2 replace open a new window?

With local file WebView2: var env = await CoreWebView2Environment.CreateAsync(WebViewRuntimeFolder, DataFolder, opt)); await webView.EnsureCoreWebView2Async(env); I want whatever you click in the WebView2,The requested showed in the WebView2 Element,…

Windows Presentation Foundation
Windows Presentation Foundation
A part of the .NET Framework that provides a unified programming model for building line-of-business desktop applications on Windows.
2,804 questions
XAML
XAML
A language based on Extensible Markup Language (XML) that enables developers to specify a hierarchy of objects with a set of properties and logic.
824 questions
asked 2021-10-27T02:51:14.067+00:00
GuoLearn 251 Reputation points
commented 2024-11-21T13:50:05.2633333+00:00
Rahul Khandelwal 0 Reputation points
1 answer

How to change tabbar style (font and size and ...)

i want change the style of tabbar menu item font and size and color how to do it ? AppShell <TabBar > <Tab Title="پروفایل" > <Tab.Icon> <FontImageSource FontFamily="MDReg"…

.NET
.NET
Microsoft Technologies based on the .NET software framework.
4,008 questions
ASP.NET Core
ASP.NET Core
A set of technologies in the .NET Framework for building web applications and XML web services.
4,704 questions
.NET MAUI
.NET MAUI
A Microsoft open-source framework for building native device applications spanning mobile, tablet, and desktop.
3,764 questions
XAML
XAML
A language based on Extensible Markup Language (XML) that enables developers to specify a hierarchy of objects with a set of properties and logic.
824 questions
asked 2024-11-14T05:09:08.0233333+00:00
Mahdi Elahi 31 Reputation points
answered 2024-11-21T08:59:23.61+00:00
Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 46,206 Reputation points Microsoft Vendor
1 answer

Double tapping Editor control locks app when deployed to iOS

Double tapping the Editor locks the app when deployed to iOS. This occurs for both net 8 and 9. Entry control works well and does not lock up the app. I added Editor and Entry controls to the demo Maui app as below. Am I missing a setting? Any known…

.NET MAUI
.NET MAUI
A Microsoft open-source framework for building native device applications spanning mobile, tablet, and desktop.
3,764 questions
XAML
XAML
A language based on Extensible Markup Language (XML) that enables developers to specify a hierarchy of objects with a set of properties and logic.
824 questions
asked 2024-11-14T07:29:50.46+00:00
TazKing 85 Reputation points
answered 2024-11-21T08:20:58.96+00:00
Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 33,596 Reputation points Microsoft Vendor
0 answers

How fix System.ArgumentNullException

L'erreur complet : System.ArgumentNullException HResult=0x80004003 Message=Value cannot be null. Arg_ParamName_Name Source=Microsoft.EntityFrameworkCore Arborescence des appels de procédure : à…

Entity Framework Core
Entity Framework Core
A lightweight, extensible, open-source, and cross-platform version of the Entity Framework data access technology.
767 questions
.NET
.NET
Microsoft Technologies based on the .NET software framework.
4,008 questions
XAML
XAML
A language based on Extensible Markup Language (XML) that enables developers to specify a hierarchy of objects with a set of properties and logic.
824 questions
asked 2024-10-28T16:59:54.3833333+00:00
Christian Nahbi 0 Reputation points
commented 2024-10-29T21:43:41.79+00:00
Christian Nahbi 0 Reputation points
1 answer One of the answers was accepted by the question author.

High RAM Usage with Custom Splash Screen in WPF (Code-Behind, .NET Core 6) - How to Reduce Memory Consumption?

I'm working on a WPF application using .NET Core 6 (Code-Behind, no MVVM) in Visual Studio 2022 on Windows 10. I've created a customized splash screen that displays a GIF on startup. The splash screen closes once the app has fully loaded. My problem is…

.NET
.NET
Microsoft Technologies based on the .NET software framework.
4,008 questions
Windows Presentation Foundation
Windows Presentation Foundation
A part of the .NET Framework that provides a unified programming model for building line-of-business desktop applications on Windows.
2,804 questions
Visual Studio
Visual Studio
A family of Microsoft suites of integrated development tools for building applications for Windows, the web and mobile devices.
5,306 questions
C#
C#
An object-oriented and type-safe programming language that has its roots in the C family of languages and includes support for component-oriented programming.
11,152 questions
XAML
XAML
A language based on Extensible Markup Language (XML) that enables developers to specify a hierarchy of objects with a set of properties and logic.
824 questions
asked 2024-10-23T02:45:31.8333333+00:00
Mojtaba_Hakim 321 Reputation points
edited the question 2024-10-28T02:14:46.39+00:00
Jack J Jun 24,616 Reputation points Microsoft Vendor
0 answers

Crash issue from Microsoft official Win32 C++ custom WinRT XAML control tutorial

Build was ok, but got a crash after following the official Microsoft official Win32 custom WinRT XAML control tutorial https://learn.microsoft.com/en-us/windows/apps/desktop/modernize/xaml-islands/host-custom-control-with-xaml-islands-cpp: Clicking…

Windows API - Win32
Windows API - Win32
A core set of Windows application programming interfaces (APIs) for desktop and server applications. Previously known as Win32 API.
2,699 questions
C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
3,806 questions
XAML
XAML
A language based on Extensible Markup Language (XML) that enables developers to specify a hierarchy of objects with a set of properties and logic.
824 questions
asked 2024-10-18T02:50:15.38+00:00
KKL 0 Reputation points
commented 2024-10-22T14:32:42.8466667+00:00
KKL 0 Reputation points
1 answer One of the answers was accepted by the question author.

[UWP] Change Lottie Animation Color / Theme Dynamically

I have used lottie json animation in xaml uwp using "CommunityToolkit.WinUI.Lottie" and "AnimatedVisualPlayer". But for dark theme I can not see the lottie animation as the color is fixed. How can we dynamically change color of…

Universal Windows Platform (UWP)
XAML
XAML
A language based on Extensible Markup Language (XML) that enables developers to specify a hierarchy of objects with a set of properties and logic.
824 questions
asked 2024-09-30T07:38:02.08+00:00
Md. Niaz Mahmud 131 Reputation points
accepted 2024-10-22T08:10:12.9866667+00:00
Md. Niaz Mahmud 131 Reputation points
1 answer One of the answers was accepted by the question author.

How to build an application correctly in the WinUI3 project template?

I am working in the Blank App, Packaged (WinUI 3 in Desktop). When compiling and launching a new project in Visual Studio using the keyboard shortcut "Ctrl + F5", the application opens without problems. However, when building the project and…

Windows App SDK
Windows App SDK
A set of Microsoft open-source libraries, frameworks, components, and tools to be used in apps to access Windows platform functionality on many versions of Windows. Previously known as Project Reunion.
804 questions
XAML
XAML
A language based on Extensible Markup Language (XML) that enables developers to specify a hierarchy of objects with a set of properties and logic.
824 questions
asked 2024-10-15T14:33:58.7666667+00:00
RΞY 20 Reputation points
edited an answer 2024-10-18T05:12:48.83+00:00
Roy Li - MSFT 33,501 Reputation points Microsoft Vendor
0 answers

How to Extend TextBox's Text Property to Show Binding Value in the Properties Window without XAML Updates?

I am working with WPF and trying to extend the functionality of a Text property in the Properties in the design mode in the TextBox, but I’m running into limitations with the Text property. Here’s what I want to achieve: In WPF, when Text has Binding,…

XAML
XAML
A language based on Extensible Markup Language (XML) that enables developers to specify a hierarchy of objects with a set of properties and logic.
824 questions
asked 2024-10-13T18:36:02.52+00:00
Coala 0 Reputation points
edited the question 2024-10-13T18:44:42.8333333+00:00
Coala 0 Reputation points
1 answer One of the answers was accepted by the question author.

WPF TextBox Style Customization: CaretBrush Disappeared After Trigger Setup

Seeking assistance with customizing the style properties of a TextBox in WPF: Background: MouseOver #505050 & not MouseOver #303030 Foreground: #FFFFFF BorderBrush: MouseOver #868686 & not MouseOver #666666 CaretBrush Despite setting up…

Windows Presentation Foundation
Windows Presentation Foundation
A part of the .NET Framework that provides a unified programming model for building line-of-business desktop applications on Windows.
2,804 questions
C#
C#
An object-oriented and type-safe programming language that has its roots in the C family of languages and includes support for component-oriented programming.
11,152 questions
XAML
XAML
A language based on Extensible Markup Language (XML) that enables developers to specify a hierarchy of objects with a set of properties and logic.
824 questions
asked 2024-10-06T11:49:55.66+00:00
StreamingMoon 20 Reputation points
accepted 2024-10-07T03:45:22.84+00:00
StreamingMoon 20 Reputation points