How to get the body of a HTTP Request using C#

gistfile1.cs

private string GetDocumentContents(System.Web.HttpRequestBase Request)
{
    string documentContents;
    using (Stream receiveStream = Request.InputStream)
    {
        using (StreamReader readStream = new StreamReader(receiveStream, Encoding.UTF8))
        {
            documentContents = readStream.ReadToEnd();
        }
    }
    return documentContents;
}

You sould use the Request.ContentEncoding

private string GetDocumentContents(HttpRequestBase Request)
        {
            string documentContents;
            using (Stream receiveStream = Request.InputStream)
            {
                using (StreamReader readStream = new StreamReader(receiveStream, Request.ContentEncoding))
                {
                    documentContents = readStream.ReadToEnd();
                }
            }
            return documentContents;
        }

I am using this code inside a specflow step definiton to capture the body of http request like below.
but I am getting error. Can anybody help?
binding error: Parameter count mismatch! The binding method 'TestFeature.WhenBrowserPayLoadIsExtracted(HttpRequestBase)' should have 0 parameters

[When(@"Browser payload is extracted")]
private string WhenBrowserPayLoadIsExtracted(HttpRequestBase Request)
{
string documentContents;
using (Stream receiveStream = Request.InputStream)
{
using (StreamReader readStream = new StreamReader(receiveStream, Encoding.UTF8))
{
documentContents = readStream.ReadToEnd();
}
}
return documentContents;

    }

thanks

public async static Task<string> GetBodyContentAsStringAsync(HttpRequestBase request)
{
    string content = string.Empty;

    using (Stream receiveStream = request.InputStream)
    using (StreamReader readStream = new StreamReader(receiveStream, request.ContentEncoding))
    { content = await readStream.ReadToEndAsync(); }

    return content;
}

Thanks, and modernized.

Also, depending on your system this is avaliable:

var rawMessage = await Request.Content.ReadAsStringAsync();

You should be careful with disposing! if you look at native BinaryRead method - it uses InputStream as well but does not dispose it.