protected void Page_Load(object sender, EventArgs e) {     if (!Page.IsPostBack)     {         this.List();     } } protected void Button1_Click(object sender, EventArgs e) {     if (TextBox2.Text == "")     {         Response.Write("<script language=javascript>alert('文件名错误！');location='javascript:history.go(-1)'</script>");     }     else     {         try         {             string path = Server.MapPath("File") + "\\" + TextBox2.Text + DropDownList1.Text;             FileInfo fi = new FileInfo(path);             if (!fi.Exists)//如果文件不存在             {                 fi.Create();//创建文件                 Label2.Text = "创建成功！文件名：" + TextBox2.Text + DropDownList1.Text;                 List();             }         }         catch (Exception error)         {             Response.Write(error.ToString());         }     } } protected void Button2_Click(object sender, EventArgs e) {     try     {         string path = Server.MapPath("File/") + Session["txt"];         string path2 = Server.MapPath("File/") + "复制" + Session["txt"];         FileInfo fi = new FileInfo(path);         if (fi.Exists)         {             fi.CopyTo(path2);//将指定路径文件夹中的文件拷贝到该文件夹中,并将该文件改名         }         Label2.Text = "复制" + Session["txt"] + "成功！" + "文件为:" + ("复制" + Session["txt"].ToString());         List();     }     catch (Exception error)     {         Label2.Text = "复制文件出错，该文件已被复制过！";     } } protected void Button4_Click(object sender, EventArgs e) {     string path = Server.MapPath("File/") + ListBox1.SelectedValue.ToString();     string path2 = Server.MapPath("file2/") + ListBox1.SelectedValue.ToString();     FileInfo fi = new FileInfo(path);     FileInfo fi2 = new FileInfo(path2);     if (fi.Exists)     {         if (!fi2.Exists)         {             fi.MoveTo(path2);//将指定文件夹路径中的文件移动到另一个路径中的文件夹             List();         }         else         {             Response.Write("<script language=javascript>alert('目标文件夹文件已经存在，不能移动改文件！');location='javascript:history.go(-1)'</script>");         }     } } protected void Button3_Click(object sender, EventArgs e) {     if (Session["txt"] == null)     {         Label2.Text = "请选中文件后在执行删除操作！";     }     FileInfo fi = new FileInfo(Server.MapPath("File/" + Session["txt"]));     if (fi.Exists)     {         fi.Delete();//删除文件         Label2.Text = "删除" + Session["txt"] + "文件成功！";         List();         Session.Clear();//清空变量Session     } } protected void ListBox1_SelectedIndexChanged(object sender, EventArgs e) {     Session["txt"] = ListBox1.SelectedValue.ToString(); } public void List()//获取指定文件夹文件名，并绑定ListBox控件显示在页面中 {     DataTable dt = new DataTable();     dt.Columns.Add(new DataColumn("Name", typeof(string)));     string serverPath = Server.MapPath("File");     DirectoryInfo dir = new DirectoryInfo(serverPath);     foreach (FileInfo fileName in dir.GetFiles())     {         DataRow dr = dt.NewRow();         dr[0] = fileName;         dt.Rows.Add(dr);     }     ListBox1.DataSource = dt;     ListBox1.DataTextField = "Name";     ListBox1.DataValueField = "Name";     ListBox1.SelectedIndex = 0;     ListBox1.DataBind(); }