控制器存储数据 ----------视图层使用数据

控制器存储数据 -->视图层使用数据

开发工具与关键技术：VS、
作者：蒋紫晨
撰写时间：2019-01-19

首先我们从视图层传过一个参数(Parameter)在控制中查询出来自己想要的数据，用Utils类的方法存储

  /// <summary>
        /// 写cookie值
        /// </summary>
        /// <param name="strName">名称</param>
        /// <param name="strValue">值</param>
        public static void WriteCookie(string strName, string strValue)
        {
            HttpCookie cookie = HttpContext.Current.Request.Cookies[strName];//发出请求
            if (cookie == null)//如果不存在的话就新增一个
            {
                cookie = new HttpCookie(strName);
            }
            cookie.Value = HttpContext.Current.Server.UrlEncode(strValue);//赋值
            cookie.Expires = DateTime.Now.AddDays(7);//设置存活时间
            HttpContext.Current.Response.AppendCookie(cookie);
        }

        /// <summary>
        /// 写cookie值
        /// </summary>
        /// <param name="strName">名称</param>
        /// <param name="strValue">值</param>
        public static void WriteCookie(string strName, string key, string strValue)
        {
            HttpCookie cookie = HttpContext.Current.Request.Cookies[strName];//发出请求
            if (cookie == null)//如果不存在的话就新增一个
            {
                cookie = new HttpCookie(strName);
            }
            cookie[key] = HttpContext.Current.Server.UrlEncode(strValue);//赋值
            cookie.Expires = DateTime.Now.AddDays(7);//设置存活时间
            HttpContext.Current.Response.AppendCookie(cookie);
        }

        /// <summary>
        /// 写cookie值
        /// </summary>
        /// <param name="strName">名称</param>
        /// <param name="strValue">值</param>
        public static void WriteCookie(string strName, string key, string strValue, int expires)
        {
            HttpCookie cookie = HttpContext.Current.Request.Cookies[strName];//发出请求
            if (cookie == null)//如果不存在的话就新增一个
            {
                cookie = new HttpCookie(strName);
            }
            cookie[key] = HttpContext.Current.Server.UrlEncode(strValue);//赋值
            cookie.Expires = DateTime.Now.AddDays(expires);//设置存活时间
            HttpContext.Current.Response.AppendCookie(cookie);
        }

        /// <summary>
        /// 写cookie值
        /// </summary>
        /// <param name="strName">名称</param>
        /// <param name="strValue">值</param>
        /// <param name="strValue">过期时间(分钟)</param>
        public static void WriteCookie(string strName, string strValue, int expires)
        {
            HttpCookie cookie = HttpContext.Current.Request.Cookies[strName];//发出请求
            if (cookie == null)//如果不存在的话就新增一个
            {
                cookie = new HttpCookie(strName);
            }
            cookie.Value = HttpContext.Current.Server.UrlEncode(strValue);//赋值
            cookie.Expires = DateTime.Now.AddMinutes(expires);//设置存活时间
            HttpContext.Current.Response.AppendCookie(cookie);
        }

用ViewData的方式来存储数据的。
以及输出的截图：

在截图中我们看到，如果我需要在另一个控制器中读取数据内容，见截图

    string UserID = Utils.GetCookie("Test", "UserID");//获取用ID

 /// <summary>
        /// 读cookie值
        /// </summary>
        /// <param name="strName">名称</param>
        /// <returns>cookie值</returns>
        public static string GetCookie(string strName)
        {
            if (HttpContext.Current.Request.Cookies != null && HttpContext.Current.Request.Cookies[strName] != null)
            {
                return HttpContext.Current.Server.UrlDecode(HttpContext.Current.Request.Cookies[strName].Value.ToString());
            }
            else
            {
                return "";
            }
        }


        /// <summary>
        /// 读cookie值
        /// </summary>
        /// <param name="strName">名称</param>
        /// <param name="key">key</param>
        /// <returns></returns>
        public static string GetCookie(string strName, string key)
        {
            if (HttpContext.Current.Request.Cookies != null && HttpContext.Current.Request.Cookies[strName] != null && HttpContext.Current.Request.Cookies[strName][key] != null)
            {
                return HttpContext.Current.Server.UrlDecode(HttpContext.Current.Request.Cookies[strName][key].ToString());
            }
            else
            {
                return "";
            }
        }

通过控制器转到视图就可以获取ViewData，见如上截图中获取的ViewData内容，下面的就很简单，我们在下一个接口用例中带上ViewData，见实现的代码结果：

谢谢大家的支持。我会努力加油 。