/// <summary>        public string[] GetDotNetVersions()  ...{  DirectoryInfo[] directories = new DirectoryInfo(Environment.SystemDirectory + @"..Microsoft.NETFramework").GetDirectories("v?.?.*");  ArrayList list = new ArrayList();  foreach (DirectoryInfo info2 in directories)  ...{  list.Add(info2.Name.Substring(1));  }  return (list.ToArray(typeof(string)) as string[]);