Beispiel #1
0
        /// <summary>
        /// 信息是否存在
        /// </summary>
        /// <returns></returns>
        public static bool IsExist <T>(this HttpSessionState session, string Key)
        {
            bool ret      = false;
            T    userInfo = session.GetValue <T>(Key);

            if (userInfo != null)
            {
                ret = true;
            }
            return(ret);
        }
        /// <summary>
        ///   Ensures a specific key to be either already in the ASP.NET session state or to be newly created
        /// </summary>
        /// <typeparam name = "T">The generic type to be returned</typeparam>
        /// <param name = "sessionState">The session state.</param>
        /// <param name = "key">The session state key.</param>
        /// <returns>The session state value.</returns>
        /// <example>
        ///   <code>
        ///     public List&lt;string&gt; StringValues {
        ///     get { return this.Session.Ensure&lt;List&lt;string&gt;&gt;("StringValues"); }
        ///     set { this.ViewState.Set("StringValues", value); }
        ///     }
        ///   </code>
        /// </example>
        public static T Ensure <T>(this HttpSessionState sessionState, string key) where T : class, new()
        {
            var value = sessionState.GetValue <T>(key);

            if (value == null)
            {
                value             = new T();
                sessionState[key] = value;
            }
            return(value);
        }
Beispiel #3
0
 public static T GetValue <T>(this HttpSessionState source, Guid pageGUID, string keyContext, string keyName)
 {
     return((T)source.GetValue(pageGUID, keyContext, keyName));
 }