ASP.NET Core API POST parameter is always null

Question

I have read the following:

• Asp.net Core Post parameter is always null
• asp.net webapi 2 post parameter is always null
• web-api POST body object

Answer 1

I needed to post string data by .Net Desktop Client to .NET Core host. I was getting unsupported media error. I have followed Shaun Luttin's answer and worked fine. The I found something easier to get just string data as folows in case someone else finds useful:

[HttpPost]
[Route("Request/Echo")]
public async Task Echo()
{
    using (var Reader = new StreamReader(Request.Body, Encoding.UTF8))
    {
        return await Reader.ReadToEndAsync();
    }
}

This post is very useful.