c# - 如何将对象作为 POST 参数发送到 ASP.Net Web 请求？

Question

我正在尝试使用 POST 方法在 ASP.NET 中以编程方式发出 Web 请求。我也想通过网络请求发送 POST 参数。像这样:

LoginData obj = new LoginData();
obj.OSVersion = deviceInformation.OperatingSystem;
obj.DeviceModel = deviceInformation.FriendlyName;
string URI = "https://XXXXXXXXX.azure-mobile.net/user/logsuserin";        
HttpWebRequest GETRequest = (HttpWebRequest)HttpWebRequest.Create(new Uri(URI, UriKind.RelativeOrAbsolute));
GETRequest.Method = "POST";
GETRequest.ContentType = "application/x-www-form-urlencoded";
GETRequest.Headers["applicationKey"] = "UFakeKkrayuAeVnoVAcjY54545455544";
//GETRequest.Parameters.add(obj);

显然，注释行不起作用。我如何实现这一点？

如何通过将我的对象作为参数发送来获得响应？

提前致谢，赫曼斯。

Answer 1

你需要使用属于HttpWebRequest的GetRequestStream()方法

void Main()
{
    LoginData obj = new LoginData
    {
        Username = "foo",
        Password = "Bar"
    };

    byte[] objBytes = Encoding.UTF8.GetBytes(obj.ToString());

//    obj.OSVersion = deviceInformation.OperatingSystem;
//    obj.DeviceModel = deviceInformation.FriendlyName;
    string URI = "https://XXXXXXXXX.azure-mobile.net/user/logsuserin";
    HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(new Uri(URI, UriKind.RelativeOrAbsolute));
    request.Method = "POST";
    request.ContentType = "application/x-www-form-urlencoded";
    request.Headers["applicationKey"] = "UFakeKkrayuAeVnoVAcjY54545455544";
    request.ContentLength = objBytes.Length;

    using (Stream stream = request.GetRequestStream())
    {
        stream.Write(objBytes, 0, objBytes.Length);
    }

    using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
    using (Stream stream = response.GetResponseStream())
    using (StreamReader reader = new StreamReader(stream))
    {
        Console.WriteLine(reader.ReadToEnd());
    }

}

public class LoginData
{
    public string Username { get; set; }
    public string Password { get; set; }
    public string OSVersion { get; set; }
    public string DeviceModel { get; set; }
    public override string ToString()
    {
        var temp = this.GetType()
                       .GetProperties()
                       .Select(p => $"{p.Name}={HttpUtility.UrlEncode(p.GetValue(this).ToString())}");

        return string.Join("&", temp);
    }
}