/// <summary>
/// 构建Sign
/// </summary>
/// <param name="parameters">参数列表</param>
/// <param name="secret">app_secret</param>
/// <returns></returns>
public static string SignTopRequest(SortedDictionary <string, string> parameters, string secret)
{
// 第一步：把字典按Key的字母顺序排序
IDictionary <string, string> sortedParams = new SortedDictionary <string, string>(parameters, StringComparer.Ordinal);
IEnumerator <KeyValuePair <string, string> > dem = sortedParams.GetEnumerator();
// 第二步：把所有参数名和参数值串在一起
StringBuilder query = new StringBuilder();
query.Append(secret);
while (dem.MoveNext())
{
string key = dem.Current.Key;
string value = dem.Current.Value;
if (!string.IsNullOrEmpty(key) && !string.IsNullOrEmpty(value))
{
query.Append(key).Append(value);
}
}
// 第三步：使用MD5/HMAC加密
string result = string.Empty;
result = AlipayMD5.Sign(query.ToString(), secret, Encoding.UTF8);
return(result);
}
/// <summary>
/// 生成请求时的签名
/// </summary>
/// <param name="sPara">请求给支付宝的参数数组</param>
/// <param name="signType">签名方式</param>
/// <param name="key">交易安全校验码</param>
/// <param name="code">字符编码格式</param>
/// <returns>签名结果</returns>
private static string BuildRequestMysign(Dictionary <string, string> sPara, string signType, string key, Encoding code)
{
//把数组所有元素，按照“参数=参数值”的模式用“&”字符拼接成字符串
string prestr = AlipayCore.CreateLinkString(sPara);
//把最终的字符串签名，获得签名结果
string mysign = "";
switch (signType)
{
case "MD5":
mysign = AlipayMD5.Sign(prestr, key, code);
break;
default:
mysign = "";
break;
}
return(mysign);
}
