C＃でHttpClientを使用してxmlを送信する

Question

xmlファイルをクライアントからapiに渡す際に問題があります。私はHttpClientを使って接続します。 マイコード：

ServicePointManager.ServerCertificateValidationCallback += (sender, cert, chain, sslPolicyErrors) => true; 
     /*var serializer = new XmlSerializer(typeof(InitUploadType)); 
     serializer.Serialize(data);*/ 
     XmlDocument doc = new XmlDocument(); 
     doc.Load("initupload-sign.xml"); 

     WebRequestHandler handler = new WebRequestHandler(); 
     X509Certificate2 certificate = new X509Certificate2("cert.crt"); 
     handler.ClientCertificates.Add(certificate); 


     HttpClient client = new HttpClient(handler); 
     client.BaseAddress = new Uri("https://test-e-dokumenty.mf.gov.pl"); 
     client.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/xml")); 

     var response = client.PostAsJsonAsync<XmlDocument>("/api/Storage/InitUploadSigned", doc).Result; 

     return response.ToString(); 

私は不正な要求に400

Answer 1

を受け付けておりますが、あなたは、私が変更した以下のコードを試してみてくださいことはできますか？

  ServicePointManager.ServerCertificateValidationCallback += (sender, cert, chain, sslPolicyErrors) => true; 
      /*var serializer = new XmlSerializer(typeof(InitUploadType)); 
      serializer.Serialize(data);*/ 
      XmlDocument doc = new XmlDocument(); 
      doc.Load("initupload-sign.xml"); 

      WebRequestHandler handler = new WebRequestHandler(); 
      X509Certificate2 certificate = new X509Certificate2("cert.crt"); 
      handler.ClientCertificates.Add(certificate); 

      HttpClient client = new HttpClient(handler); 
      client.BaseAddress = new Uri("https://test-e-dokumenty.mf.gov.pl"); 
      client.Headers.Set("Content-Type", "application/xml"); 
      var response = client.UploadString(path, doc.OuterXml); 

      return response.ToString();