Google POST Request

gistfile1.cs

/// <summary>
/// Send a post request to Google.
/// </summary>
/// <param name="url"></param>
/// <param name="postFields"></param>
/// <returns></returns>
public void PostRequest(string url, params GoogleParameter[] postFields)
{
	// Format the parameters.
	string formattedParameters = string.Empty;
	foreach (var par in postFields.Where(o => o != null))
		formattedParameters += string.Format("{0}={1}&", par.Name, par.Value);
	formattedParameters = formattedParameters.TrimEnd('&');

	// Append a token.
	formattedParameters += String.Format("&{0}={1}", "T", GetToken());

	// Get the current post data and encode.
	ASCIIEncoding ascii = new ASCIIEncoding();
	byte[] encodedPostData = ascii.GetBytes(
		String.Format(formattedParameters));

	// Prepare request.
	HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url);
	request.Method = "POST";
	request.ContentType = "application/x-www-form-urlencoded";
	request.ContentLength = encodedPostData.Length;

	// Add the authentication header.
	request.Headers.Add("Authorization", "GoogleLogin auth=" + auth);

	// Write parameters to the request.
	using (Stream newStream = request.GetRequestStream())
		newStream.Write(encodedPostData, 0, encodedPostData.Length);

	// Get the response and validate.
	HttpWebResponse response = (HttpWebResponse)request.GetResponse();
	if (response.StatusCode != HttpStatusCode.OK)
		throw new LoginFailedException(
			response.StatusCode, response.StatusDescription);
}