verifying iOS in app purchase receipt with C#

Question

I am verifying my ios in app purchase receipt on my server using C# web service

I got receipt as string by doing below in Xcode:

Answer 1

For managing subscriptions, @Jerry Naing's answer also requires the provision of your shared secret (can be retrieved/generated from iTunes Connect). Easiest way to include this is just to add an additional property in the line defining the json var.

var json = new JObject(new JProperty("receipt-data", receiptData), new JProperty("password", "put_your_shared_secret_here")).ToString();

Failing to provide the shared secret will result in a 21004 status response.