我有一个方法可以将模型作为多部分表单数据发送到服务器，但是我不认为如何发布嵌入式对象，例如：
// Create a request using a URL that can receive a post.
WebRequest request = WebRequest.Create ("localhost/shoutbox/index.php");
// Set the Method property of the request to POST.
request.Method = "POST";
// Create POST data and convert it to a byte array.
string postData = "string.Format("username={0}&password={1}", "username", "password")";
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 ();
我创建这样的多部分数据：
public class Model1
{
public string Field {get;set;}
}
public class Model2
{
public Model1 Model {get;set;}
}
那么我是否需要采取某种递归方法来监视字段类型是否为对象，并根据它写入数据？如果是这样，我不知道如何找出它是什么类型。只需写var boundary = CreateFormDataBoundary();
var postData = model.GetType()
.GetProperties(BindingFlags.Instance | BindingFlags.Public)
.ToDictionary(prop => prop.Name, prop => prop.GetValue(model, null));
var request = (HttpWebRequest)WebRequest.Create(url + path);
request.Method = "POST";
request.KeepAlive = true;
request.ContentType = "multipart/form-data; boundary=" + boundary;
var requestStream = request.GetRequestStream();
foreach (var item in postData)
{
if (item.Value != null)
{
//if list of strings
if (item.Value is IEnumerable<string> fields)
{
if (fields != null)
foreach (var field in fields)
WriteMultipartFormData(new KeyValuePair<string, string>(item.Key, field), requestStream, boundary);
}
else
{
WriteMultipartFormData(new KeyValuePair<string, string>(item.Key, item.Value?.ToString()), requestStream, boundary);
}
}
}
var endBytes = Encoding.UTF8.GetBytes("--" + boundary + "--");
requestStream.Write(endBytes, 0, endBytes.Length);
requestStream.Close();
？