public static void Main()
string[] nameArray = new string[] { "csc.etslan.org", "etsvcln1000", "cscint1234", "etsvcln0432.etslan.org"};
for(int i = 0; i < nameArray.Length; i++) {
Console.WriteLine("Before name = " + name);
name = name.Substring(0, name.IndexOf(".") < 0 ? name.Length : name.IndexOf(".") );
Console.WriteLine("After name = " + name);