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We're a small group of developers who make software for the App Store and Microsoft Store. Through this blog, we aim to provide guides relating to the development of Windows and Xbox (C#, VB and XAML) and iOS and MacOS (Swift) apps. Specifically, we aim to create guides on topics for which there is not a lot of public information already available to provide a source for other developers to learn about these topics. We also aim to update our articles to keep information accurate and correct. 

We aim to write our articles in ways to help everyone understand the content - we aim to include enough detail and context on the topic covered and link to external resources to allow readers to learn more. Many of our articles also have downloadable versions of provided snippets that can be used in our app Codly. We welcome and appreciate all feedback so feel free to comment on our articles, this page and/or contact us with any feedback you have!

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How to show placeholder text in a WPF TextBox in C# and VB

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Sometimes, when you have a text box in a user interface, you may want to add placeholder text to that text box to give users a prompt as to what to enter into the text box. If you've ever used UWP or WinUI, you'll probably have noticed that the default text box elements provide a PlaceholderText property that provides this functionality. However, WPF and Windows Forms don't provide this functionality by default. Luckily, thanks to WPF's rendering capabilities, it is quite easy to set up placeholder text manually. If you're using Windows Forms, you can make use of the ElementHost to use a WPF TextBox. Typically, placeholder text is a slightly faded colour compared to user-entered text to help distinguish it and only shows when no text is entered into the text box. An example is below: How to show placeholder text in a WPF TextBox To show placeholder text in a WPF textbox, all we need to do is show a partially transparent, intangible Label above the TextBox like so (Y...
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How to enable dark title bar in WPF and Windows Forms/WinForms apps in C# and VB

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Windows has had a dark mode feature for a long time now, however, as a Windows Forms and/or WPF (Windows Presentation Foundation) developer, you may have noticed that the Windows dark mode does not affect your app at all automatically - in fact the Windows dark mode only automatically affects UWP, WinUI and Chromium based user interfaces - there's no support for Windows dark mode in Windows Forms and WPF. Tip: If you want to set the title bar's colours to any colours you want instead of just light or dark, follow this guide here . Luckily, it is very easy to determine if dark mode is currently enabled and be notified any time dark mode is switched on or off - from there it's just a matter of updating your UI to match which mode Windows is in. While this may work fine for the client area of your app (i.e. the area of your app that does not include the title bar and border), you don't have a lot of control over the non-client area of your app and you'll notice that by...
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How to use modern icons in XAML in WPF on Windows 10 and 11

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Icons and symbols are a common part of modern user interfaces. Depending on your skills, creating your own icons may not be easy. Luckily, Windows 10 and 11 come preinstalled with plenty of icons that can be used in applications. If you've developed for UWP or WinUI and have used the SymbolIcon , you may have seen these icons before. By using these modern icons, you can create user interfaces that look consistent with the operating system. And the great part is that it's easy to use these icons with WPF (Windows Presentation Foundation) while supporting both Windows 10 and 11. 6 WPF buttons with modern icons in Windows 11 The same 6 WPF buttons with modern icons in Windows 10 Where the icons are stored These modern icons that Windows 10 and 11 include come in the form of fonts - specifically Segoe MDL2 Assets and Segoe Fluent Icons . Segoe MDL2 Assets is included in Windows 10 and 11 and Segoe Fluent Icons is included in Windows 11. Segoe Fluent Icons includes newer version...
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Microsoft WebView2: How to check if the WebView2 runtime is installed in C# and VB

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How to change the colour of a WPF or Windows Forms/WinForms title bar in Windows 11 in C# and VB

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