.NET example of using the new API

[betdynamics]

Does anyone have a short example of how to use the new API using C# and .NET?

I have tried to produce something but it just comes back with a "Bad Request" message whenever I make a call to the API.

I want to try a working piece of code to check whether my Application Key is working or not.

[betdynamics]

It turns out that my appkey wasn't attached to the new API correctly.

All sorted now - thanks to Neil at BDP Support.

[Contrarian2]

betdynamics,

Could you post your code example, please?

I can't work out how to send a JSON request using C#.

Thanks.

[betdynamics]

I'm using the JSON.NET library to do it.

[Lopiner]

Hi to all

Im trying to make a request to the API but im getting "Bad Request" from the server in response. I don't know what am i doing wrong. Any help is much appreciated.

This is my request:

Imports System.Text
Imports Newtonsoft.Json
Imports System.IO

Module Requests
    Public Sub GetAllMarkets()
        Dim URL As String
        URL = APIEndPoint & ListEventTypes
        Dim Request As Net.HttpWebRequest = Net.WebRequest.Create(URL)
        
        'URL = "https://beta-api.betfair.com/rest/v1.0/" & "listEventTypes/"
        
        Request.Accept = "*/*"
        Request.AllowAutoRedirect = True
        Request.Timeout = RequestTimeOut
        Request.Method = "POST"
        Request.KeepAlive = True
        
        Request.Headers.Add("X-Application", ApplicationKey) 'My API Key here
        Request.Headers.Add("X-Authentication", SessionToken) 'A session token retrieved from the other API
        Request.ContentType = "application/json"

        Dim PostData As String
        PostData = "{""filter"":{ }}"
        Dim PostDataBytes As Byte() = Encoding.UTF8.GetBytes(PostData)
        Request.ContentLength = PostDataBytes.Length

        Dim PostStream As IO.Stream = Request.GetRequestStream()
        PostStream.Write(PostDataBytes, 0, PostDataBytes.Length)
        PostStream.Close()

        Dim ResponseData As String
        Dim Response As Net.HttpWebResponse = Request.GetResponse()
        If Response.StatusCode = Net.HttpStatusCode.OK Then
            Dim ResponseStream As IO.StreamReader = New IO.StreamReader(Response.GetResponseStream())
            ResponseData = ResponseStream.ReadToEnd()
        End If
        Response.Close()

    End Sub
End Module

Thanks

[gus]

Dunno much (or indeed anything) about .NET, but your query doesn't look right to me.

I think it should look something like this:

{"filter":{"eventTypeIds":[]}}

note the empty square brackets for an empty array

rather than your:

"{""filter"":{ }}"



Anyway, that's what mine looks like, using REST from a Java app, and it works.

[Lopiner]

Thanks gus

I was following an example from the documentation. I have changed to your suggestion of sending an empty array but unfortunately im still getting a "Bad Request" response.

I was looking for some way of analyzing the header and body of my request but i haven't found any way.

I cant understand what am i doing wrong. Does anyone have an example in .net of a request to the API that is willing to share? Thanks

[Lopiner]

Maybe someone from the BDP team could post an example if they find the time. I think it would be useful for more users (the VB.NET topic is the most active in here)

Thanks

[PT_PT]

Thanks gus

I was following an example from the documentation. I have changed to your suggestion of sending an empty array but unfortunately im still getting a "Bad Request" response.

I was looking for some way of analyzing the header and body of my request but i haven't found any way.

I cant understand what am i doing wrong. Does anyone have an example in .net of a request to the API that is willing to share? Thanks

Have you tried wireshark?

[betdynamics]

Do other requests work (so you have confirmed that your API key is working)?

[aubergine]

Fiddler is the tool you want for inspecting headers, POST data etc. This will also give you the JSON bad request response (assuming you're hitting the API), post it here and I'll have a look if you like.

This is what a JSONRPC request should look like:

{"id":0,"jsonrpc":"2.0","method":"SportsAPING/v1.0/listCompetitions","params":{"filter":{"eventTypeId s":[1]}}}

All you need to do is create a .NET class that serializes to that form (using JSON.NET for example), something like:

public class JsonRpcRequest
    {
        private IOperation _operation { get; set; }

        public int Id { get; set; }
        public string JsonRpc { get { return "2.0"; } }
        public string Method { get { return "SportsAPING/v1.0/" + _operation.Method; } }
        public IDictionary<string, object> Params { get { return _operation.Parameters; } }
    }

Note: this is not a complete sample, I've got a more complicated inheritance setup, but should give you an idea. Plus I'm using RPC, not REST, but there's not much between them.

Then create a bog standard WebRequest, or use the new HttpClient which is pretty straightforward.

HTH

[Lopiner]

Thank you all. I haven't had the time to test the suggestions. Will do that and post the results if someone else find it useful.

[robne2000]

I've always been more interested in what I can use the API to do in terms of strategies, rather than coding. In the past I've managed to get by mainly by expanding on examples provided by others.

So just wondering if anyone has any working VB.NET examples they can share?

If not, I've made a little progress and will continue at the weekend, so I'll post it once I have something working.

[vic]

I've always been more interested in what I can use the API to do in terms of strategies, rather than coding. In the past I've managed to get by mainly by expanding on examples provided by others.

So just wondering if anyone has any working VB.NET examples they can share?

If not, I've made a little progress and will continue at the weekend, so I'll post it once I have something working.

Robne2000
I too get by like you do but so far there is a lack of good examples in c#. For example what's all this application key thingy. Why can't we just log in. I suppose I'll be using my old code until we have better examples. Cheers