C#代码实现对HTTP POST参数进行排序

private static string GetSortedParas(Dictionary<string, string> dic)
{
    dic = dic.OrderBy(key => key.Key).ToDictionary(keyItem => keyItem.Key, valueItem => valueItem.Value);
    var sbPara = new StringBuilder(1024);
    foreach (var para in dic.Where(para => !para.Value.IsNullOrWhiteSpace()))
    {
        sbPara.AppendFormat("{0}={1}&", para.Key, para.Value);
    }
    return sbPara.ToString().TrimEnd('&');
}

 C#代码实现对HTTP POST参数进行排序