asp.net文件的，創建，刪除，複製，粘貼

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class _Default : System.Web.UI.Page
{
   
    public bool FileCreate(string path)
    {

//創建文件
        bool ret = false;
        System.IO.FileInfo file = new System.IO.FileInfo(path);
        if (!file.Exists)
        {
            file.Create();
            ret = true;
        }
        if (ret == true)
        {
            Response.Write("<script>alert('創建文件成功！');</script>");
        }
        else
        {
            Response.Write("<script>alert('創建文件失敗！');</script>");
        }
        return ret;
    }
   
     public  bool FileDelete(string path)
    {

//刪除文件
        bool ret = false;
        System.IO.FileInfo file = new System.IO.FileInfo(path);
        if (file.Exists)
        {
            file.Delete();
            ret = true;
        }
        if (ret == true)
        {
            Response.Write("<script>alert('刪除文件成功！');</script>");
        }
        else
        {
            Response.Write("<script>alert('刪除文件失敗！');</script>");
        }
        return ret;
    }
   
    public bool FileCopy(string source,string destination)
    {

//複製文件
        bool ret = false;
        System.IO.FileInfo file_s = new System.IO.FileInfo(source);
        System.IO.FileInfo file_d = new System.IO.FileInfo(destination);
        if (file_s.Exists)
        {
            if (!file_d.Exists)
            {
                file_s.CopyTo(destination);
                ret = true;
            }
        }
        if (ret == true)
        {
            Response.Write("<script>alert('複製文件成功！');</script>");
        }
        else
        {
            Response.Write("<script>alert('複製文件失敗！');</script>");
        }
        return ret;
    }
   
    public bool FileMove(string source,string destination)
    {

//剪切文件
        bool ret = false;
        System.IO.FileInfo file_s = new System.IO.FileInfo(source);
        System.IO.FileInfo file_d = new System.IO.FileInfo(destination);
        if (file_s.Exists)
        {
            if (!file_d.Exists)
            {
                file_s.MoveTo(destination);
                ret = true;
            }
        }
        if (ret == true)
        {
            Response.Write("<script>alert('剪切文件成功！');</script>");
        }
        else
        {
            Response.Write("<script>alert('剪切文件失敗！');</script>");
        }
        return ret;
    }

　　protected void  Button1_Click(object sender, EventArgs e)
　　{
        FileCreate(Server.MapPath("123.txt"));   //創建文件
　　}
    protected void  Button2_Click(object sender, EventArgs e)
    {;
        FileDelete(Server.MapPath("123.txt"));   //刪除文件
    }
    protected void  Button3_Click(object sender, EventArgs e)
    {
        FileCopy(Server.MapPath("123.txt"), Server.MapPath("data/123.txt")); //複製文件
    }
    protected void Button4_Click(object sender, EventArgs e)
    {
        FileMove(Server.MapPath("123.txt"), Server.MapPath("data/123.txt")); //剪切文件
    }
}