请问怎么创建目录，以及怎么样监听这个文件夹是否有新的文件考入呢？

Question

FileSystemWatcher 类
侦听文件系统更改通知，并在目录或目录中的文件发生更改时引发事件。ms-help://MS.VSCC.2003/MS.MSDNQTR.2003FEB.2052/cpref/html/frlrfsystemiofilesystemwatcherclasstopic.htm

Answer 1

下面的示例创建并删除指定目录。
[Visual Basic] 
Imports System
Imports System.IO
Imports Microsoft.VisualBasicPublic Class Test
    Public Shared Sub Main()
        ' Specify the directory you want to manipulate.
        Dim path As String = "c:\MyDir"        Try
            ' Determine whether the directory exists.
            If Directory.Exists(path) Then
                Console.WriteLine("That path exists already.")
                Return
            End If            ' Try to create the directory.
            Dim di As DirectoryInfo = Directory.CreateDirectory(path)
            Console.WriteLine("The directory was created successfully at {0}.", Directory.GetCreationTime(path))            ' Delete the directory.
            di.Delete()
            Console.WriteLine("The directory was deleted successfully.")        Catch e As Exception
            Console.WriteLine("The process failed: {0}.", e.ToString())
        End Try
    End Sub
End Class
[C#] 
using System;
using System.IO;class Test 
{
    public static void Main() 
    {
        // Specify the directory you want to manipulate.
        string path = @"c:\MyDir";        try 
        {
            // Determine whether the directory exists.
            if (Directory.Exists(path)) 
            {
                Console.WriteLine("That path exists already.");
                return;
            }            // Try to create the directory.
            DirectoryInfo di = Directory.CreateDirectory(path);
            Console.WriteLine("The directory was created successfully at {0}.", Directory.GetCreationTime(path));            // Delete the directory.
            di.Delete();
            Console.WriteLine("The directory was deleted successfully.");
        } 
        catch (Exception e) 
        {
            Console.WriteLine("The process failed: {0}", e.ToString());
        } 
        finally {}
    }
}

Answer 2

ms-help://MS.VSCC.2003/MS.MSDNQTR.2003FEB.2052/cpref/html/frlrfsystemiodirectoryclasscreatedirectorytopic.htm