如何在WindownForm中将图像URL（ftp）从服务器绑定到图片Edit（或pictureBox） [英] How to binding image url (ftp) from server to picture Edit (or pictureBox) in WindownForm

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：

1. 用户：主机上的用户名（用户ID）。
2. 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。
3. 主机： 网络主机的完全限定域名或其IP地址。
4. 端口： 要连接的端口号;它被省略，默认为21。
5. 路径： 形式为cwd1 / cwd2 / ... / cwdN / name的路径规范。

1. user: a user name (user id) on the host.
2. 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.
3. host:  the fully qualified domain name of a network host, or its IP address.
4. port:  the port number to connect to; it omitted, defaults to 21.
5. 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

这篇关于如何在WindownForm中将图像URL（ftp）从服务器绑定到图片Edit（或pictureBox）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！