按ascill排序参数

/// <summary>
/// 获得排完序的字典
/// </summary>
/// <param name="parameters"></param>
/// <returns></returns>
public static Dictionary<string, object> GetASCIISortDic(IDictionary<string, object> parameters)
{
    IDictionary<string, object> sortedParams = new SortedDictionary<string, object>(parameters);
    IEnumerator<KeyValuePair<string, object>> dem = sortedParams.GetEnumerator();
    Dictionary<string, object> res = new Dictionary<string, object>();
    while (dem.MoveNext())
    {
        res.Add(dem.Current.Key, dem.Current.Value);
    }
    return res;
}