WebExtentions

    /// <summary>
    /// V1  Wednesday December 14,2011 8:42 PM
    /// </summary>
    public static partial class WebExtentions {

        public static void LockWrite(this HttpApplicationStateBase application,string key,Func<string,object,object> valueFunc) {

            if(application == null)
                throw new ArgumentNullException("application");
            if(key == null)
                throw new ArgumentNullException("key");
            if(valueFunc == null)
                throw new ArgumentNullException("valueFunc");

            try {
                application.Lock();
                object existing = application[key];
                application[key] = valueFunc(key,existing);
            }
            finally {
                application.UnLock();
            }
        }
        public static void LockWrite(this HttpApplicationStateBase application,string key,object value) {

            if(application == null)
                throw new ArgumentNullException("application");
            if(key == null)
                throw new ArgumentNullException("key");

            try {
                application.Lock();
                application[key] = value;
            }
            finally {
                application.UnLock();
            }
        }
        public static void LockWrite(this HttpSessionStateBase state,string key,Func<string,object,object> valueFunc) {
            if(state == null)
                throw new ArgumentNullException("state");
            if(key == null)
                throw new ArgumentNullException("key");
            if(valueFunc == null)
                throw new ArgumentNullException("valueFunc");

            lock(state) {
                object existing = state[key];
                state[key] = valueFunc(key,existing);
            }
        }
        public static void LockWrite(this HttpSessionStateBase state,string key,object value) {

            if(state == null)
                throw new ArgumentNullException("application");
            if(key == null)
                throw new ArgumentNullException("key");

            lock(state) {
                object existing = state[key];
                state[key] = value;
            }
        }
    }