AssemblyInfo

Get information about Xamarin Forms version, package version, build and associated commit

Since version Xamarin.Forms 4.0 all assemblies inside the public nupkg provide information of the package version they reference, what commit on github they correspond and what was the build id on AzureDevOps that built the package.

This is done by the Version.targets and using GitInfo to get git commit information and MSBuilder.GenerateAssemblyInfo to add this metadata to non sdk style projects.

You can get this information by consulting the AssemblyFileVersion or for more detail info in the AssemblyInformationalVersion metadata.

AssemblyInformationalVersion provides something like {XamarinFormsVersionWithSuffix}+sha.{commit}-azdo.{buildid}

Some example code to extract the values

   var xamarinFormsAssembly = Assembly.Load($"Xamarin.Forms.Core");
   var fileVersion = (AssemblyFileVersionAttribute)Attribute.GetCustomAttribute(xamarinFormsAssembly, typeof(AssemblyFileVersionAttribute), false);
   var informationalVersion = (AssemblyInformationalVersionAttribute)Attribute.GetCustomAttribute(xamarinFormsAssembly, typeof(AssemblyInformationalVersionAttribute), false);

    var info = informationalVersion.InformationalVersion.Split('+');

    if (info.Length > 1)
    {
         PackageVersion = info[0];
         var infos = info[1].Split('-');
         foreach (var item in infos)
         {
            if (item.Contains("azdo."))
            {
               BuildId = item.Replace("azdo.", "");
               AzdoUrl = $"https://dev.azure.com/devdiv/DevDiv/_build/results?buildId={BuildId}";
            }
            if (item.Contains("sha."))
            {
               Sha = item.Replace("sha.", "");
               ShaUrl = $"https://github.com/xamarin/Xamarin.Forms/commits/{Sha}";
            }
          }
    }

Sample code

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