如何在WindownForm中将图像URL（ftp）从服务器绑定到图片Edit（或pictureBox）

本文介绍了如何在WindownForm中将图像URL（ftp）从服务器绑定到图片Edit（或pictureBox）的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我有问题从服务器（有链接）到绑定pictureEdit获取图像。 $ a函数创建PathFile（我有路径文件（ftp：// ....） ）

I am have a problem to get image from server (have link) to binding pictureEdit. a function Create PathFile ( I have path file (ftp://....))

public string CreatePathFile(string fileName, string subFolder) { string localPath = string.Empty; try { System.Configuration.Configuration configuration = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None); string ftp_host = configuration.AppSettings.Settings["FTP_Host"].Value.ToString(); string ftp_homedir = configuration.AppSettings.Settings["FTP_HomeDir"].Value.ToString(); string ftp_username = configuration.AppSettings.Settings["FTP_Username"].Value.ToString(); string ftp_password = configuration.AppSettings.Settings["FTP_Password"].Value.ToString(); string temp_location = System.IO.Path.GetTempPath(); System.IO.DirectoryInfo directory = new System.IO.DirectoryInfo(temp_location); if (!System.IO.Directory.Exists(temp_location)) { System.IO.Directory.CreateDirectory(temp_location); } WebClient request = new WebClient(); request.Credentials = new NetworkCredential(ftp_username.Normalize(), ftp_password.Normalize()); string pathFile = "ftp://"; if (String.IsNullOrEmpty(ftp_homedir)) { if (String.IsNullOrEmpty(subFolder)) { pathFile += ftp_host; } else { pathFile += ftp_host + "/" + subFolder; } } else { if (String.IsNullOrEmpty(subFolder)) { subFolder = ftp_homedir; } else { subFolder = ftp_homedir + "/" + subFolder; } pathFile += ftp_host + "/" + subFolder+ "/" + fileName; } localPath = pathFile; } catch (Exception ep) { MessageBox.Show("ERROR: " + ep.Message.ToString()); } return localPath; } }

和绑定到pictureBox的函数

and a function binding to pictureBox

public void SetPictureProduct(string filename) { string link=CreatePathFile(filename, "Products"); //have link: etc: ftp://119.79.35.120:990/med.template/TANMY_TEMPLATE/Products/0501010012.01.03.png if (!string.IsNullOrEmpty(link)) { formPic.ImageLocation = link; //formPic: name of pictureBox } }

结果：远程服务器返回错误:( 530）未登录。 我可以将图像上传到服务器但我无法从服务器加载到pictureEdit。 你能帮帮我吗？非常感谢。 Dev 9.3.3

Result: The remote server returned an error: (530) Not logged in. I can upload image to sever but I can't load from server to pictureEdit. Can you help me? Many Thanks. Dev 9.3.3

推荐答案

Hello v-bui，

Hello v-bui,

尝试将用户名和密码添加到您的ftp网址。格式如下。

Try to add username and password to your ftp url. The format like below.

ftp://user:password@host:port/path

组件遵守以下规则：

用户：主机上的用户名（用户ID）。

密码： 与用户名对应的密码;注意：如果网址中的用户名和密码字段包含字符：或@或/，则必须对该字符进行编码。

主机：网络主机的完全限定域名或其IP地址。

端口：要连接的端口号;它被省略，默认为21。

路径：形式为cwd1 / cwd2 / ... / cwdN / name的路径规范。

user: a user name (user id) on the host.

password:the password corresponding to the user name; note: if the user and password field in a URL contains character : or @ or /, the character must be encoded.

host: the fully qualified domain name of a network host, or its IP address.

port: the port number to connect to; it omitted, defaults to 21.

path:path specification of the form cwd1 / cwd2 / ... / cwdN / name.

尝试下面的网址。

ftp://username:password@119.79.35.120:990/med.template/TANMY_TEMPLATE/Products/0501010012.01.03.png

祝你好运，

Neil Hu