c# - 发布方法并使用某些值重定向而不使用 Form C#

Question

<form action="https://somewebsiteaddrest" method="post">
   <input name="Var1"  type="hidden" value="Variable 1 value" />
   <input name="Var2"  type="hidden" value="Variable 2 value" />
   <input name="Var3"  type="hidden" value="Variable 3 value" />
   <input name="Var4"  type="hidden" value="Variable 4 value" />
   <input name="Var5"  type="hidden" value="Variable 6 value" />
   <input type="submit" value="Go now" />
</form>

我想在不使用此表单和 javascript frm.submit();

的情况下创建相等的 post 方法和重定向(在 C# 中)

我有一个 C# 代码片段，我希望它能完成这些工作。

    WebRequest request = WebRequest.Create(url);
    request.Method = "POST";
    string postData = "What to write here? here should be variable i guess.";
    byte[] byteArray = Encoding.UTF8.GetBytes(postData);
    request.ContentType = "application/x-www-form-urlencoded";
    request.ContentLength = byteArray.Length;
    Stream dataStream = request.GetRequestStream();
    dataStream.Write(byteArray, 0, byteArray.Length);
    dataStream.Close();
    WebResponse response = request.GetResponse();
    Console.WriteLine(((HttpWebResponse)response).StatusDescription);
    dataStream = response.GetResponseStream();
    StreamReader reader = new StreamReader(dataStream);
    string responseFromServer = reader.ReadToEnd();
    Console.WriteLine(responseFromServer);
    reader.Close();
    dataStream.Close();
    response.Close();


string postData

要在 postData 中写入什么才能获得与使用 form 和 form.submit() 相同的效果？提前致谢

Answer 1

发布数据应该是 URL 编码的表单数据，即由 & 字符分隔的键=值对。使用 UrlEncode method对值进行编码:

string postData =
  "Var1=" + HttpUtility.UrlEncode("Variable 1 value")+
  "&Var2=" + HttpUtility.UrlEncode("Variable 2 value")+
  "&Var3=" + HttpUtility.UrlEncode("Variable 3 value")+
  "&Var4=" + HttpUtility.UrlEncode("Variable 4 value")+
  "&Var5=" + HttpUtility.UrlEncode("Variable 6 value");