ASP.net操作FTP(上)

有的时候我们上传东西不想传到web目录而是ftp服务器，这样可以不占用服务器宝贵空间，以前发过一个tips中提到利用ftpsupport.dll操作ftp的方法，可能当时没有说清楚，网友要求给个清楚的例子，就随便写了个文件可以上传，下载，删除ftp上的文件：



首先，dll 点击 这里 下载，别忘记给项目添加引用

test.aspx:

<% @ Page language = " c# "  Codebehind = " Test.aspx.cs "  AutoEventWireup = " false "  Inherits = " FtpTest.Test "   %>
<! DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"  >
< HTML >
     < HEAD >
         < title > Test </ title >
         < meta  name ="GENERATOR"  Content ="Microsoft Visual Studio .NET 7.1" >
         < meta  name ="CODE_LANGUAGE"  Content ="C#" >
         < meta  name ="vs_defaultClientScript"  content ="JavaScript" >
         < meta  name ="vs_targetSchema"  content ="http://schemas.microsoft.com/intellisense/ie5" >
     </ HEAD >
     < body >
         < form  id ="Form1"  method ="post"  runat ="server" >
             < input  type ="file"  id ="file1"  runat ="server" >
             < asp:TextBox  id ="tb_Dir"  runat ="server"  Width ="80px" > \ </ asp:TextBox >
             < asp:Button  id ="btn_upload"  runat ="server"  Text ="Upload" ></ asp:Button >
             < asp:DataGrid  id ="DataGrid1"  runat ="server"  AutoGenerateColumns ="False"  CellPadding ="3"  DataKeyField ="AutoID" >
                 < ItemStyle  Font-Size ="9pt"  Font-Names ="Verdana" ></ ItemStyle >
                 < HeaderStyle  Font-Size ="9pt"  Font-Names ="Verdana"  Font-Bold ="True" ></ HeaderStyle >
                 < Columns >
                     < asp:BoundColumn  DataField ="FileName"  HeaderText ="FileName" ></ asp:BoundColumn >
                     < asp:BoundColumn  DataField ="FilePath"  HeaderText ="FilePath" ></ asp:BoundColumn >
                     < asp:BoundColumn  DataField ="FileDownloadName"  HeaderText ="FileDownloadName" ></ asp:BoundColumn >
                     < asp:BoundColumn  DataField ="FileSize"  HeaderText ="FileSize(K)" ></ asp:BoundColumn >
                     < asp:BoundColumn  DataField ="UploadTime"  HeaderText ="UploadTime" ></ asp:BoundColumn >
                     < asp:ButtonColumn  Text ="DOWNLOAD"  HeaderText ="Download"  CommandName ="Download" ></ asp:ButtonColumn >
                     < asp:ButtonColumn  Text ="DEL"  HeaderText ="Del"  CommandName ="Del" ></ asp:ButtonColumn >
                 </ Columns >
             </ asp:DataGrid >
         </ form >
     </ body >
</ HTML >

test.aspx.cs:

using  System;
using  System.Collections;
using  System.Configuration;
using  System.ComponentModel;
using  System.Data;
using  System.Data.SqlClient;
using  System.Drawing;
using  System.Web;
using  System.Web.SessionState;
using  System.Web.UI;
using  System.Web.UI.WebControls;
using  System.Web.UI.HtmlControls;

namespace  FtpTest
{
     ///   <summary>
     ///  Test 的摘要说明。
     ///   </summary>
     public   class  Test : System.Web.UI.Page
    {
         protected  System.Web.UI.WebControls.Button btn_upload;
         protected  System.Web.UI.HtmlControls.HtmlInputFile file1;
         protected  System.Web.UI.WebControls.TextBox tb_Dir;
         protected  System.Web.UI.WebControls.DataGrid DataGrid1;
    
         private   void  Page_Load( object  sender, System.EventArgs e)
        {
             if ( ! IsPostBack)
            {
                SetBind();
            }
        }

         #region  Web 窗体设计器生成的代码
         override   protected   void  OnInit(EventArgs e)
        {
             //
             //  CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
             //
            InitializeComponent();
             base .OnInit(e);
        }
        
         ///   <summary>
         ///  设计器支持所需的方法 - 不要使用代码编辑器修改
         ///  此方法的内容。
         ///   </summary>
         private   void  InitializeComponent()
        {    
             this .btn_upload.Click  +=   new  System.EventHandler( this .btn_upload_Click);
             this .DataGrid1.ItemCommand  +=   new  System.Web.UI.WebControls.DataGridCommandEventHandler( this .DataGrid1_ItemCommand);
             this .Load  +=   new  System.EventHandler( this .Page_Load);

        }
         #endregion

         private   void  SetBind()
        {
            SqlConnection conn = new  SqlConnection(ConfigurationSettings.AppSettings[ " strconn " ]);
            SqlDataAdapter da = new  SqlDataAdapter( " select * from FTP order by FilePath " ,conn);
            DataSet ds = new  DataSet();
            da.Fill(ds);
             this .DataGrid1.DataSource = ds;
             this .DataGrid1.DataBind();
        }

         private   void  btn_upload_Click( object  sender, System.EventArgs e)
        {
            FtpClass ftp = new  FtpClass();
             string  filedownloadname = ftp.FtpUpload( this .file1.PostedFile, this .tb_Dir.Text);
             string  [] arrs = file1.PostedFile.FileName.Split( ' \\ ' );
             string  filename = arrs[arrs.Length - 1 ];
            SqlConnection conn = new  SqlConnection(ConfigurationSettings.AppSettings[ " strconn " ]); 
            SqlCommand comm = new  SqlCommand( " insert into FTP (FileName,FileDownloadName,FilePath,FileSize,UploadTime) values (@filename,@filedownloadname,@filepath,@filesize,@uploadtime) " ,conn); 
            SqlParameter parm1 = new  SqlParameter( " @filename " ,SqlDbType.NVarChar, 50 ); 
            parm1.Value = filename;
            SqlParameter parm2 = new  SqlParameter( " @filedownloadname " ,SqlDbType.NVarChar, 50 ); 
            parm2.Value = filedownloadname;
            SqlParameter parm3 = new  SqlParameter( " @filepath " ,SqlDbType.NVarChar, 50 ); 
            parm3.Value = this .tb_Dir.Text;
            SqlParameter parm4 = new  SqlParameter( " @filesize " ,SqlDbType.Int); 
            parm4.Value = this .file1.PostedFile.ContentLength / 1024 ;
            SqlParameter parm5 = new  SqlParameter( " @uploadtime " ,SqlDbType.DateTime); 
            parm5.Value = DateTime.Now.ToString();
            comm.Parameters.Add(parm1); 
            comm.Parameters.Add(parm2); 
            comm.Parameters.Add(parm3); 
            comm.Parameters.Add(parm4);
            comm.Parameters.Add(parm5); 
            conn.Open(); 
            comm.ExecuteNonQuery(); 
            conn.Close(); 
            SetBind();
        }

         private   void  DataGrid1_ItemCommand( object  source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
        {
             if (e.CommandName == " Del " )
            {
                FtpClass ftp = new  FtpClass();
                ftp.FileDel(e.Item.Cells[ 2 ].Text,e.Item.Cells[ 1 ].Text);
                SqlConnection conn = new  SqlConnection(ConfigurationSettings.AppSettings[ " strconn " ]); 
                SqlCommand comm = new  SqlCommand( " delete from FTP where AutoID=@autoid " ,conn); 
                SqlParameter parm1 = new  SqlParameter( " @autoid " ,SqlDbType.NVarChar, 50 ); 
                parm1.Value = this .DataGrid1.DataKeys[e.Item.ItemIndex];
                comm.Parameters.Add(parm1); 
                conn.Open(); 
                comm.ExecuteNonQuery(); 
                conn.Close();                 
                SetBind();
            }

             if (e.CommandName == " Download " )
            {
                FtpClass ftp = new  FtpClass();
                ftp.FtpDownload(HttpContext.Current,e.Item.Cells[ 2 ].Text,e.Item.Cells[ 1 ].Text);
            }
        }
    }
}

转载于:https://www.cnblogs.com/scgw/archive/2011/01/25/1944608.html