using System;
using System.IO;
class Test
{
public static void Main()
{
string path1 = @"c:\temp\MyTest.txt";
string path2 = @"c:\temp\MyTest";
string path3 = @"temp";
if (Path.HasExtension(path1))
{
Console.WriteLine("{0} has an extension.", path1);
}
if (!Path.HasExtension(path2))
{
Console.WriteLine("{0} has no extension.", path2);
}
if (!Path.IsPathRooted(path3))
{
Console.WriteLine("The string {0} contains no root information.", path3);
}
}
}