/// <summary>
/// 返回发送微信红包需要的xml数据包
/// </summary>
/// <param name="mchbillno">系统订单号10位</param>
/// <param name="mchid">商户号</param>
/// <param name="apikey">商户密钥</param>
/// <param name="wxappid">微信公众平台appid</param>
/// <param name="reopenid">接受人的OpenId</param>
/// <param name="totalamount">发送的金额数（单位：元）</param>
/// <returns></returns>
private static string RedPackXml(RedPackInfo info)
{
//获得所需参数
//string actname = "微信摇一摇";
//string nickname = "上海狼群";
//string sendname = "上海狼群";
//string wishing = "欢迎您参加活动，祝你天天开心";
//string clientip = "127.0.0.1";
//string remark = "越摇越开心";
//string noncestr = Rand.Str(32);
Int64 totalamounttemp = (Int64)(info.totalamout * 100);
//生成Sign签名
//对参数按照key=value的格式，并按照参数名ASCII字典序排序如下
String[] signtemp =
{
"mch_billno=" + info.mchbillno,
"mch_id=" + info.mchid,
"wxappid=" + info.appId,
"nick_name=" + info.nickname,
"send_name=" + info.sendname,
"re_openid=" + info.openid,
"total_amount=" + totalamounttemp,
"min_value=" + totalamounttemp,
"max_value=" + totalamounttemp,
"total_num=1",
"wishing=" + info.wishing,
"client_ip=" + info.clientip,
"act_name=" + info.actname,
"remark=" + info.remark,
"nonce_str=" + info.noncestr,
"scene_id=" + info.scene_id
};
Array.Sort(signtemp);
string signTempStr = String.Join("&", signtemp);
//拼接API密钥：
string stringSignTemp = signTempStr + "&key=" + info.apiKey;
string sign = EncryptorHelper.Md5Encryptor32(stringSignTemp).ToUpper();
//生成xml包
StringBuilder sb = new StringBuilder(0);
sb.Append("<xml>");
sb.AppendFormat("<sign>{0}</sign>", sign); //签名
sb.AppendFormat("<mch_billno>{0}</mch_billno>", info.mchbillno); //商户订单号（每个订单号必须唯一）组成： mch_id+yyyymmdd+10位一天内不能重复的数字。接口根据商户订单号支持重入， 如出现超时可再调用。
sb.AppendFormat("<mch_id>{0}</mch_id>", info.mchid); //微信支付分配的商户号
sb.AppendFormat("<wxappid>{0}</wxappid>", info.appId); //商户appid
sb.AppendFormat("<nick_name>{0}</nick_name>", info.nickname); //提供方名称
sb.AppendFormat("<send_name>{0}</send_name>", info.sendname); //红包发送者名称
sb.AppendFormat("<re_openid>{0}</re_openid>", info.openid); //接受收红包的用户
sb.AppendFormat("<total_amount>{0}</total_amount>", totalamounttemp); //付款金额，单位分
sb.AppendFormat("<min_value>{0}</min_value>", totalamounttemp); //最小红包金额，单位分
sb.AppendFormat("<max_value>{0}</max_value>", totalamounttemp); //最大红包金额，单位分（ 最小金额等于最大金额： min_value=max_value =total_amount）
sb.AppendFormat("<total_num>1</total_num>"); //红包发放总人数total_num=1
sb.AppendFormat("<wishing>{0}</wishing>", info.wishing); //红包祝福语
sb.AppendFormat("<client_ip>{0}</client_ip>", info.clientip); //调用接口的机器Ip地址
sb.AppendFormat("<act_name>{0}</act_name>", info.actname); //活动名称
// sb.AppendFormat("<act_id></act_id>");
sb.AppendFormat("<remark>{0}</remark>", info.remark); //备注信息
sb.AppendFormat("<scene_id>{0}</scene_id>", info.scene_id);
//sb.AppendFormat("<logo_imgurl></logo_imgurl>");//商户logo的url
//sb.AppendFormat("<share_content></share_content>");//分享文案
//sb.AppendFormat("<share_url></share_url>");//分享链接
//sb.AppendFormat("<share_imgurl></share_imgurl>");//分享的图片url
sb.AppendFormat("<nonce_str>{0}</nonce_str>", info.noncestr);//随机字符串，不长于32位
sb.AppendFormat("</xml>");
return(sb.ToString());
}