private string BuildForm(SortedDictionary<string, string> dicParam)
{
StringBuilder sbHtml = new StringBuilder();
sbHtml.Append("<form id='alipaysubmit' name='alipaysubmit' action='" + AlipayConfig.ALIPay_URL + "_input_charset=" + AlipayConfig.CHARTSET + "' method='get'>");
foreach (KeyValuePair<string, string> temp in dicParam)
{
sbHtml.Append("<input type='hidden' name='" + temp.Key + "' value='" + temp.Value + "'/>");
}
sbHtml.Append("<input type='submit' value='确认' style='display:none;'></form>");
sbHtml.Append("<script>document.forms['alipaysubmit'].submit();</script>");
return sbHtml.ToString();
}