新人求助：我想在硬盘上创建一个文件夹，怎么判断其是否存在，存在就不创建，不存在就创建啊？

Question

如题，请给我详细的代码好吗？  谢谢各位了

Answer 1

引用命名空间
using System.IO;//sPath 是文件的物理路径
if(!Directory.Exists(sPath))
{
 Directory.CreateDirectory(sPath);
}

Answer 2

string dir = @"d:\test";
if(!System.IO.Directory.Exists(dir))
{
System.IO.Directory.CreateDirectory(dir);
}

Answer 3

好，详细些。信息来之MSDN
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 {}
    }
}