/// <summary>
/// Add assembly resolution for Microsoft.Build core dlls in the current AppDomain from the specified
/// instance of Visual Studio. See <see cref="QueryVisualStudioInstances()" /> to discover Visual Studio
/// instances or use <see cref="RegisterDefaults" />.
/// </summary>
/// <param name="instance"></param>
public static void RegisterInstance(VisualStudioInstance instance)
{
if (instance == null)
{
throw new ArgumentNullException(nameof(instance));
}
RegisterMSBuildPath(instance.MSBuildPath);
}
/// <summary>
/// Add assembly resolution for Microsoft.Build core dlls in the current AppDomain from the specified
/// instance of Visual Studio. See <see cref="QueryVisualStudioInstances()" /> to discover Visual Studio
/// instances or use <see cref="RegisterDefaults" />.
/// </summary>
/// <param name="instance"></param>
public static void RegisterInstance(VisualStudioInstance instance)
{
if (instance == null)
{
throw new ArgumentNullException(nameof(instance));
}
if (instance.DiscoveryType == DiscoveryType.DotNetSdk)
{
// The dotnet cli sets up these environment variables when msbuild is invoked via `dotnet`,
// but we are using msbuild dlls directly and therefore need to mimic that.
ApplyDotNetSdkEnvironmentVariables(instance.MSBuildPath);
}
RegisterMSBuildPath(instance.MSBuildPath);
}
/// <summary>
/// Discover instances of Visual Studio and register the first one. See <see cref="RegisterInstance" />.
/// </summary>
/// <returns>Instance of Visual Studio found and registered.</returns>
public static VisualStudioInstance RegisterDefaults()
{
VisualStudioInstance instance = GetInstances(VisualStudioInstanceQueryOptions.Default).FirstOrDefault();
if (instance == null)
{
var error = "No instances of MSBuild could be detected." +
Environment.NewLine +
$"Try calling {nameof(RegisterInstance)} or {nameof(RegisterMSBuildPath)} to manually register one.";
throw new InvalidOperationException(error);
}
RegisterInstance(instance);
return(instance);
}
/// <summary>
/// Add assembly resolution for Microsoft.Build core dlls in the current AppDomain from the specified
/// instance of Visual Studio. See <see cref="QueryVisualStudioInstances()" /> to discover Visual Studio
/// instances or use <see cref="RegisterDefaults" />.
/// </summary>
/// <param name="instance"></param>
public static void RegisterInstance(VisualStudioInstance instance)
{
if (instance == null)
{
throw new ArgumentNullException(nameof(instance));
}
AppDomain.CurrentDomain.AssemblyResolve += (_, eventArgs) =>
{
var assemblyName = new AssemblyName(eventArgs.Name);
if (s_msBuildAssemblies.Contains(assemblyName.Name, StringComparer.OrdinalIgnoreCase))
{
var targetAssembly = Path.Combine(instance.MSBuildPath, assemblyName.Name + ".dll");
return(File.Exists(targetAssembly) ? Assembly.LoadFrom(targetAssembly) : null);
}
return(null);
};
}
