using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using System.IO;namespace WindowsFormsApplication7{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        private void button1_Click(object sender, EventArgs e)        {            if (textBox1.Text == string.Empty)//判断输入的文件夹名称是否为空            {                MessageBox.Show("文件件名称不能为空！");            }            else            {                DirectoryInfo dinfo = new DirectoryInfo(textBox1.Text);//实例化DirectoryInfo类对象                if (dinfo.Exists)                {                    MessageBox.Show("该文件夹已经存在");                }                else                {                    dinfo.Create();//使用DirectoryInfo对象的Create方法创建文件夹                }            }        }    }}