The remote server returned an error: (400) bad request.

See more:

C#

ASP.NET

WCF

WCFServices

, +

I have WCF service to store and retrieve messages (in/from a database). I'm calling it from ASP.NET.

When I run my app I face with following problem:

The remote server returned an error: (400) Bad Request.

I don't actually understand how to cope with it.
Here's the class that throws the exception:

public class SendMessageClient
{
    private string BASE_URL = "http://localhost:49350/Service1.svc/";
    public bool sendMessage(Message message)
    {
        try
        {
            DataContractSerializer ser = new DataContractSerializer(typeof(Message));

            MemoryStream mem = new MemoryStream();
            ser.WriteObject(mem, message);
            string data = Encoding.UTF8.GetString(mem.ToArray(), 0, (int)mem.Length);
            WebClient webClient = new WebClient();
            webClient.Headers["Content-Type"] = "application/json";
            webClient.Encoding = Encoding.UTF8;
            webClient.UploadString(BASE_URL + "sendmessage", "POST", data);
            return true;
        }
        catch
        {
            return false;
        }
    }
}

Here's stack trace

at System.Net.HttpWebRequest.GetResponse() at System.Net.WebClient.GetWebResponse(WebRequest request) at System.Net.WebClient.DownloadBits(WebRequest request, Stream writeStream) at System.Net.WebClient.UploadBits(WebRequest request, Stream readStream, Byte[] buffer, Int32 chunkSize, Byte[] header, Byte[] footer) at System.Net.WebClient.UploadDataInternal(Uri address, String method, Byte[] data, WebRequest& request) at System.Net.WebClient.UploadString(Uri address, String method, String data) at System.Net.WebClient.UploadString(String address, String method, String data) at MessageServiceClient.Models.SendMessageClient.sendMessage(Message message) in C:\Users\Asus\source\repos\Web service project\MessageServiceClient\Models\SendMessageClient.cs:line 27

What I have tried:

I checked my WCF Service with reqbin and it works with 200 OK inserting data to my db