public static FileInfo GetOutputFile(this Project project, string ext = ".dll")
{
var e = project.GetPropertyValue("TargetExt") ?? ext;
if (e == "*Undefined*")
{
e = ext;
}
var outputPath = project.GetOutputPath();
var assemblyName = project.GetPropertyValue("AssemblyName") + e;
return(new FileInfo(Path.Combine(Path.GetDirectoryName(project.FullPath), outputPath, assemblyName)));
}