获取签名字符串，将参数排序后拼接在一起，获得对象所有属性的值的拼接

获得对象所有属性的值的拼接

/// <summary>
        /// 获得对象所有属性的值的拼接
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="t"></param>
        /// <returns></returns>
        public static Dictionary<string, string> GetPropertyValueString<T>(T t, List<string> signProperties)
        {
            Dictionary<string, string> values = new Dictionary<string, string>();
            if (t == null)
            {
                return null;
            }
            System.Reflection.PropertyInfo[] properties = t.GetType().GetProperties(System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.Public);

            if (properties.Length <= 0)
            {
                return null;
            }
            foreach (System.Reflection.PropertyInfo item in properties)
            {
                string name = item.Name;
                if (signProperties != null && signProperties.Count > 0)
                {
                    if (signProperties.Contains(name))
                    {
                        object value = item.GetValue(t, null);
                        if (item.PropertyType.IsValueType || item.PropertyType.Name.StartsWith("String"))
                        {
                            values.Add(name, value == null ? "" : value.ToString());
                        }
                    }
                }
                else
                {
                    object value = item.GetValue(t, null);
                    if (item.PropertyType.IsValueType || item.PropertyType.Name.StartsWith("String"))
                    {
                        values.Add(name, value == null ? "" : value.ToString());
                    }
                }
                //object value = item.GetValue(t, null);
                //if (item.PropertyType.IsValueType || item.PropertyType.Name.StartsWith("String"))
                //{
                //    //tStr += string.Format("{0}:{1},", name, value);
                //    values.Add(name, value == null ? "" : value.ToString());
                //}
                ////else
                ////{
                ////    GetPropertyValueString(value);//对象中嵌套的对象
                ////}
            }

            return values;
        }

　　签名字符串

 public static string GetSignContent(IDictionary<string, string> parameters)
        {
            // 第一步：把字典按Key的字母顺序排序
            IDictionary<string, string> sortedParams = new SortedDictionary<string, string>(parameters);
            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("");
            while (dem.MoveNext())
            {
                string key = dem.Current.Key;
                string value = dem.Current.Value;
                if (!string.IsNullOrEmpty(key) && !string.IsNullOrEmpty(value))
                {
                    query.Append(key).Append("=").Append(value).Append("&");
                }
            }
            string content = query.ToString().Substring(0, query.Length - 1);

            return content;
        }