/// <summary>
/// 获取微信签名
/// </summary>
/// <param name="sParams"></param>
/// <param name="key">自己设置的证书密钥</param>
/// <returns></returns>
public static string GetSign(SortedDictionary <string, string> sParams, string key)
{
string sign = string.Empty;
StringBuilder sb = new StringBuilder();
foreach (KeyValuePair <string, string> temp in sParams)
{
if (temp.Value == "" || temp.Value == null || temp.Key.ToLower() == "sign")
{
continue;
}
sb.Append(temp.Key.Trim() + "=" + temp.Value.Trim() + "&");
}
sb.Append("key=" + key.Trim());
string signkey = sb.ToString();
sign = WXPayTool.GetMD5(signkey, "utf-8");
return(sign);
}
/// <summary>
/// 随机串
/// </summary>
public static string getNoncestr()
{
Random random = new Random();
return(WXPayTool.GetMD5(random.Next(1000).ToString(), "UTF-8").ToLower().Replace("s", "S"));
}