public void Post(Action<object> callback, Dictionary<string, string> parameters)
{
string postString = string.Empty;
if (parameters != null)
{
foreach (KeyValuePair<string, string> kv in parameters)
{
if (!string.IsNullOrEmpty(postString))
postString += "&";
postString = kv.Key + "=" + kv.Value;
}
}
Post(callback, postString);
}