寻找发送http请求的c#方法

Question

我正在尝试开发一个 Microsoft Excel 插件来将 Excel 工作表数据发送到 Web 应用程序。它将要求插件提示用户名和密码，然后向 Web 应用程序发送登录 http 请求以获取会话。然后它将数据上传到网络应用程序。我应该使用哪些 .net 东西？

Answer 1

发送用户名和密码的 Post 方法示例。要上传文件，只需在 google.com 或 bing.com 中搜索“文件上传 C#”或尝试 C# 的 WebClient.UploadFile，代码项目

// Create a request using a URL that can receive a post. 
WebRequest request = WebRequest.Create("http://example.com");
// Set the Method property of the request to POST.
request.Method = "POST";
// Create POST data and convert it to a byte array.
string postData = "username=user&passsword=pass";
byte[] byteArray = Encoding.UTF8.GetBytes (postData);
// Set the ContentType property of the WebRequest.
request.ContentType = "application/x-www-form-urlencoded";
// Set the ContentLength property of the WebRequest.
request.ContentLength = byteArray.Length;
// Get the request stream.
Stream dataStream = request.GetRequestStream ();
// Write the data to the request stream.
dataStream.Write (byteArray, 0, byteArray.Length);
// Close the Stream object.
dataStream.Close ();
// Get the response.
WebResponse response = request.GetResponse ();
// Display the status.
Console.WriteLine (((HttpWebResponse)response).StatusDescription);
// Get the stream containing content returned by the server.
dataStream = response.GetResponseStream ();
// Open the stream using a StreamReader for easy access.
StreamReader reader = new StreamReader (dataStream);
// Read the content.
string responseFromServer = reader.ReadToEnd ();
// Display the content.
Console.WriteLine (responseFromServer);
// Clean up the streams.
reader.Close ();
dataStream.Close ();
response.Close();                                                                                         

Answer 2

对于 .NET 中的 HTTP 通信，请尝试 System.Net.WebClient 或 System.Net.HttpWebRequest。