NET Standard library project.Īt the end of that first tag, the x prefix is used for an attribute named Class. The local namespace declaration allows you to access other classes from the.
Xamarin.Forms supports the 2009 XAML specification, but not all of it. However, these elements and attributes are slightly different depending on the year embedded in the URI. This is used for several elements and attributes that are intrinsic to XAML itself and which are supported by other implementations of XAML. The second namespace declaration defines a prefix of x. The first XML namespace declaration means that tags defined within the XAML file with no prefix refer to classes in Xamarin.Forms, for example ContentPage. They are simply URIs owned by Xamarin and Microsoft, and they basically function as version identifiers. Don’t bother checking what those URIs point to. The two XML namespace ( xmlns) declarations refer to URIs, the first seemingly on Xamarin’s web site and the second on Microsoft’s. The MainPage.xaml file looks like this (although the formatting might be a little different): This is true of the other two files in the XamlSamples project: Most other classes with XAML files contribute to a class that derives from ContentPage those files use XAML to define the visual contents of an entire page. You'll need to click the arrow next to App.xaml to see the code-behind file.īoth App.xaml and contribute to a class named App that derives from Application. , a C# code-behind file associated with the XAML file.NET Standard library are a pair of files with the following names: These articles will not venture outside of that project. NET Standard library project is where you’ll be spending virtually all of your programming time. Unless you need to write platform-specific code, the shared XamlSamples. NET Standard library, XamlSamples.Android, and XamlSamples.iOS.Īfter creating the XamlSamples solution, you might want to test your development environment by selecting the various platform projects as the solution startup project, and building and deploying the simple application created by the project template on either phone emulators or real devices. Three projects are created in the solution: the XamlSamples. In the following dialog, you can select a location for the project:
In the next dialog, give the project a name of XamlSamples (or whatever you prefer). In the New Project dialog, select Multiplatform > App at the left, and Blank Forms App ( not Forms App) from the template list: In Visual Studio for Mac, select File > New Solution from the menu.
NET Standard library, XamlSamples.Android, XamlSamples.iOS, and the Universal Windows Platform solution, XamlSamples.UWP. In the New Cross Platform App dialog, click Blank, and click the OK button:įour projects are created in the solution: the XamlSamples. In the Configure your new project window, set the Project name to XamlSamples (or whatever your prefer), and click the Create button. In the Create a new project window, select Mobile in the Project type drop down, select the Mobile App (Xamarin.Forms) template, and click the Next button: In Windows, launch Visual Studio 2019, and in the start window click Create a new project to create a new project: