我需要执行 cURL 请求以从 Web 获取 CSV 文件。我以前从未使用过 cURL，到目前为止，我通过谷歌看到的东西似乎没有意义:

cURL 调用需要如下所示:

curl --user username:password http://somewebsite.com/events.csv 

我正在尝试使用的代码(我用它来获取基本的身份验证 XML 文件)

string URL = "http://somewebsite.com/events.csv"; 
string Username = "username"; 
string Password = "password"; 
WebClient req = new WebClient(); 
 
CredentialCache myCache = new CredentialCache(); 
myCache.Add(new Uri(URL), "Basic", new NetworkCredential(Username, Password)); 
 
req.Credentials = myCache; 
 
string results = null; 
results = Encoding.UTF8.GetString(req.DownloadData(URL)); 

这只是返回登录屏幕的 html，因此不会进行身份验证。

请您参考如下方法:

我发现了问题。显然，当您在用户名字段中传递 @ 符号(如电子邮件用户名)时，请求失败，因此必须将其转换为 base 64 字符串。以下是代码，以防其他人遇到此问题:

    string url = "https://website.com/events.csv";  
    WebRequest myReq = WebRequest.Create(url);       
    string username = "username"; 
    string password = "password"; 
    string usernamePassword = username + ":" + password; 
    CredentialCache mycache = new CredentialCache(); 
    mycache.Add(new Uri(url), "Basic", new NetworkCredential(username, password)); 
    myReq.Credentials = mycache; 
    myReq.Headers.Add("Authorization", "Basic " + Convert.ToBase64String(new ASCIIEncoding().GetBytes(usernamePassword))); 
 
    WebResponse wr = myReq.GetResponse(); 
    Stream receiveStream = wr.GetResponseStream(); 
    StreamReader reader = new StreamReader(receiveStream, Encoding.UTF8); 
    string content = reader.ReadToEnd(); 
    Console.WriteLine(content); 
    Console.ReadLine();