public static async Task<WebStream> Post(string url, Dictionary<string, string> postdata, string encoding, string uagent = null,
NameValueCollection headers = null, CookieCollection cookies = null, int timeout = 10000,
bool redirect = true, string referer = null, IWebProxy proxy = null)
{
string pdata = postdata.PostFromDictionary();
return await CreateStream(url,pdata, encoding, "application/x-www-form-urlencoded", uagent, headers, cookies, timeout, redirect, referer, proxy);
}
public static async Task<WebStream> CreateStream(string url, string postData, string encoding,
