public String fileGetFileExt(String fullPath)
{
String path = "";
String fileName = "";
int pos = 0;
String c = "";
separatePathAndFileName(fullPath, ref path, ref fileName);
pos = fileName.Length;
if (pos == 0)
{
return "";
}
c = fileName.Substring(pos, 1);
while (c != ".")
{
pos = pos - 1;
if (pos == 0) { break; }
c = fileName.Substring(pos, 1);
}
switch (pos)
{
case 0:
// if there is not a separator this file doesn't have extension
//
return "";
default:
// return the extension
//
return fileName.Substring(pos + 1);
}
}