public static String GetFileExtension(String filePath)
{
String tmpString = filePath;
//size_t strLength=System::TcsLen(filePath);
int strLength = tmpString.Length;
String retString = "";
for (int stringTrav = strLength - 1; stringTrav >= 0; stringTrav--)
{
if (tmpString[stringTrav].CompareTo('.')==0)
{
retString=tmpString.Remove(0, stringTrav + 1);
break;
}
}
return retString;
}