WinFrom通过WebClient上传下载文件（带进度条）

(2009-09-27 12:18:09)

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分类： 软件开发

以下程序在.NET2005，系统XP中测试通过：

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.Net;

using System.IO;

 

namespace TQSystem.Com

{

    class UpDownLoadFile

    {

 

        /// <summary>

        /// WebClient上传文件至服务器（不带进度条）

        /// </summary>

        /// <param name="fileNameFullPath">要上传的文件（全路径格式）</param>

        /// <param name="strUrlDirPath">Web服务器文件夹路径</param>

        /// <returns>True/False是否上传成功</returns>

        public bool UpLoadFile(string fileNameFullPath, string strUrlDirPath)

        {

            //得到要上传的文件文件名

            string fileName = fileNameFullPath.Substring(fileNameFullPath.LastIndexOf("\\") + 1);

            //新文件名由年月日时分秒及毫秒组成

            string NewFileName = DateTime.Now.ToString("yyyyMMddhhmmss")

                                        + DateTime.Now.Millisecond.ToString()

                                        + fileNameFullPath.Substring(fileNameFullPath.LastIndexOf("."));

            //得到文件扩展名

            string fileNameExt = fileName.Substring(fileName.LastIndexOf(".") + 1);

            if (strUrlDirPath.EndsWith("/") == false) strUrlDirPath = strUrlDirPath + "/";

            //保存在服务器上时，将文件改名（示业务需要）

            strUrlDirPath = strUrlDirPath + NewFileName;

            // 创建WebClient实例

            WebClient myWebClient = new WebClient();

            myWebClient.Credentials = CredentialCache.DefaultCredentials;

            // 将要上传的文件打开读进文件流

            FileStream myFileStream = new FileStream(fileNameFullPath, FileMode.Open, FileAccess.Read);

            BinaryReader myBinaryReader = new BinaryReader(myFileStream);

            try

            {

                byte[] postArray = myBinaryReader.ReadBytes((int)myFileStream.Length);

                //打开远程Web地址，将文件流写入

                Stream postStream = myWebClient.OpenWrite(strUrlDirPath, "PUT");

                if (postStream.CanWrite)

                {

                    postStream.Write(postArray, 0, postArray.Length);

                }

                else

                {

                    //MessageBox.Show("Web服务器文件目前不可写入，请检查Web服务器目录权限设置！","系统提示",MessageBoxButtons.OK,MessageBoxIcon.Information);

                }

                postStream.Close();//关闭流

                return true;

            }

            catch (Exception exp)

            {

                //MessageBox.Show("文件上传失败：" + exp.Message, "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Information);

                return false;

            }

        }

 

        /// <summary>

        /// 下载服务器文件至客户端（不带进度条）

        /// </summary>

        /// <param name="strUrlFilePath">要下载的Web服务器上的文件地址（全路径　如：http://www.dzbsoft.com/test.rar）</param>

        /// <param name="Dir">下载到的目录（存放位置，机地机器文件夹）</param>

        /// <returns>True/False是否上传成功</returns>

        public bool DownLoadFile(string strUrlFilePath, string strLocalDirPath)

        {

            // 创建WebClient实例

            WebClient client = new WebClient();

            //被下载的文件名

            string fileName = strUrlFilePath.Substring(strUrlFilePath.LastIndexOf("/"));

            //另存为的绝对路径＋文件名

            string Path = strLocalDirPath + fileName;

            try

            {

                WebRequest myWebRequest = WebRequest.Create(strUrlFilePath);

            }

            catch (Exception exp)

            {

                MessageBox.Show("文件下载失败：" + exp.Message, "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Information);

            }

            try

            {

                client.DownloadFile(strUrlFilePath, Path);

                return true;

            }

            catch (Exception exp)

            {

                MessageBox.Show("文件下载失败：" + exp.Message, "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Information);

                return false;

            }

        }

 

 

        /// <summary>

        /// 下载带进度条代码（普通进度条）

        /// </summary>

        /// <param name="URL">网址</param>

        /// <param name="Filename">文件名</param>

        /// <param name="Prog">普通进度条ProgressBar</param>

        /// <returns>True/False是否下载成功</returns>

        public bool DownLoadFile(string URL, string Filename, ProgressBar Prog)

        {

            try

            {

                System.Net.HttpWebRequest Myrq = (System.Net.HttpWebRequest)System.Net.HttpWebRequest.Create(URL); //从URL地址得到一个WEB请求   

                System.Net.HttpWebResponse myrp = (System.Net.HttpWebResponse)Myrq.GetResponse(); //从WEB请求得到WEB响应   

                long totalBytes = myrp.ContentLength; //从WEB响应得到总字节数   

                Prog.Maximum = (int)totalBytes; //从总字节数得到进度条的最大值   

                System.IO.Stream st = myrp.GetResponseStream(); //从WEB请求创建流（读）   

                System.IO.Stream so = new System.IO.FileStream(Filename, System.IO.FileMode.Create); //创建文件流（写）   

                long totalDownloadedByte = 0; //下载文件大小   

                byte[] by = new byte[1024];

                int osize = st.Read(by, 0, (int)by.Length); //读流   

                while (osize > 0)

                {

                    totalDownloadedByte = osize + totalDownloadedByte; //更新文件大小   

                    Application.DoEvents();

                    so.Write(by, 0, osize); //写流   

                    Prog.Value = (int)totalDownloadedByte; //更新进度条   

                    osize = st.Read(by, 0, (int)by.Length); //读流   

                }

                so.Close(); //关闭流

                st.Close(); //关闭流

                return true;

            }

            catch

            {

                return false;

            }

        }

 

 

        /// <summary>

        /// 下载带进度条代码(状态栏式进度条）

        /// </summary>

        /// <param name="URL">网址</param>

        /// <param name="Filename">文件名</param>

        /// <param name="Prog">状态栏式进度条ToolStripProgressBar</param>

        /// <returns>True/False是否下载成功</returns>

        public bool DownLoadFile(string URL, string Filename, ToolStripProgressBar Prog)

        {

            try

            {

                System.Net.HttpWebRequest Myrq = (System.Net.HttpWebRequest)System.Net.HttpWebRequest.Create(URL); //从URL地址得到一个WEB请求   

                System.Net.HttpWebResponse myrp = (System.Net.HttpWebResponse)Myrq.GetResponse(); //从WEB请求得到WEB响应   

                long totalBytes = myrp.ContentLength; //从WEB响应得到总字节数   

                Prog.Maximum = (int)totalBytes; //从总字节数得到进度条的最大值   

                System.IO.Stream st = myrp.GetResponseStream(); //从WEB请求创建流（读）   

                System.IO.Stream so = new System.IO.FileStream(Filename, System.IO.FileMode.Create); //创建文件流（写）   

                long totalDownloadedByte = 0; //下载文件大小   

                byte[] by = new byte[1024];

                int osize = st.Read(by, 0, (int)by.Length); //读流   

                while (osize > 0)

                {

                    totalDownloadedByte = osize + totalDownloadedByte; //更新文件大小   

                    Application.DoEvents();

                    so.Write(by, 0, osize); //写流   

                    Prog.Value = (int)totalDownloadedByte; //更新进度条   

                    osize = st.Read(by, 0, (int)by.Length); //读流   

                }

                so.Close(); //关闭流   

                st.Close(); //关闭流   

                return true;

            }

            catch

            {

                return false;

            }

 

        }

 

    }

}