webclient上传下载文件

定义WebClient使用的操作类: 操作类名称WebUpDown

WebClient上传文件至Ftp服务:

//// <summary>

/// WebClient上传文件至Ftp服务

/// </summary>

/// <param name="fileNamePath">文件名，全路径格式</param>

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

public static void UpLoadFile(string fileNamePath, string uriString)

{

string NewFileName = DateTime.Now.ToString("yyMMddhhmmss") + DateTime.Now.Millisecond.ToString() + fileNamePath.Substring(fileNamePath.LastIndexOf("."));

uriString = uriString + NewFileName;

//创建WebClient实例

WebClient myWebClient = new WebClient();

//指定用户名和密码

myWebClient.Credentials = new NetworkCredential("username", "password");

try

{

//上传文件

myWebClient.UploadFile(new Uri(uriString), fileNamePath);

}

catch (Exception ex)

{

MessageBox.Show("文件上传失败，失败原因:" + ex.Message);

}

finally

{

myWebClient.Dispose();

}

}

下载服务器文件至客户端:

/// <summary>

/// 下载服务器文件至客户端

/// </summary>

/// <param name="URL">被下载的文件地址，绝对路径</param>

/// <param name="Dir">另存放的目录</param>

public static void Download(string URL, string Dir)

{

WebClient client = new WebClient();

client.Credentials = new NetworkCredential("username "," password ");

string Path = Dir;   //另存为的绝对路径＋文件名

try

{

client.DownloadFile(new Uri(URL), Path);

}

catch (Exception ex)

{

MessageBox.Show("文件下载失败，失败原因:" + ex.Message);

}

finally

{

client.Dispose();

}

}

调用方法:

/// <summary>

/// WebClient上传到Ftp服务

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

private void Button_Click_5(object sender, RoutedEventArgs e)

{

WebUpDown.UpLoadFile(@"C:\123.txt",@"ftp://localhost//");

}

/// <summary>

/// WebClient使用Ftp服务下载到客户端

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

private void Button_Click_6(object sender, RoutedEventArgs e)

{

WebUpDown.Download(@"ftp://localhost//123.txt", @"C:\123.txt");

}