public void WriteDirectoryBuildProps(ISolutionOptions options)
{
string strongNameKeyDirectory = Path.Combine(options.RepositoryDirectory, "build\\strong name keys\\");
string strongNameKeyFile = Path.Combine(strongNameKeyDirectory, $"{options.SolutionName}SharedKey.snk");
Directory.CreateDirectory(strongNameKeyDirectory);
ProjectRootElement root = ProjectRootElement.Create(NewProjectFileOptions.None);
ProjectPropertyGroupElement p0 = root.AddPropertyGroup();
p0.AddProperty("MSBuildAllProjects", "$(MSBuildAllProjects);$(MSBuildThisFileFullPath)");
ProjectPropertyGroupElement p1 = root.AddPropertyGroup();
p1.AddDefaultProperty("DisableStandardFrameworkResolution", "false");
p1.AddDefaultProperty("AppendTargetFrameworkToOutputDirectory", "false");
ProjectPropertyGroupElement p3 = root.AddPropertyGroup();
p3.AddProperty("SolutionDir", "$(MSBuildThisFileDirectory)");
p3.AddProperty("RepositoryDirectory", "$([System.IO.Path]::GetFullPath('$(SolutionDir)..\\'))");
p3.AddDefaultProperty("OutputPath", @"$([System.IO.Path]::GetFullPath('$(RepositoryDirectory)bin\$(Configuration)\$(MSBuildProjectName)\'))");
p3.AddDefaultProperty("IntermediateOutputPath", @"$([System.IO.Path]::GetFullPath('$(RepositoryDirectory)bin\obj\$(MSBuildProjectName)\$(Configuration)\'))");
StrongNameKeyInfo snk = StrongNameKeyManager.GenerateStrongNameKeyInfo();
ProjectPropertyGroupElement signingProperties = root.AddPropertyGroup();
signingProperties.AddDefaultProperty("SignAssembly", "true");
signingProperties.AddDefaultProperty("AssemblyOriginatorKeyFile", "$(RepositoryDirectory)build\\strong name keys\\$(SolutionName)SharedKey.snk");
signingProperties.AddDefaultProperty("PublicKey", snk.PublicKey);
signingProperties.AddDefaultProperty("PublicKeyToken", snk.PublicKeyToken);
File.WriteAllBytes(strongNameKeyFile, snk.RawBytes);
root.Save(options.DirectoryBuildPropsPath);
}