get enum val by string

gistfile1.txt

fileType = Enum.Parse(typeof(ArtifactStore.ArtifactFileType), fileExtension.ToUpper());

fileType = Enum.GetValues(typeof (ArtifactStore.ArtifactFileType))
               .Cast<ArtifactStore.ArtifactFileType>()
               .Where(m => m.ToString() == fileExtension.ToUpper()).SingleOrDefault();