200935项目小记

１.扩展方法

实现方法：创建一些helper方法，或者生成子类。

      public static class helper

    {

        public static string MD5Hash(this string s)

        {

            return System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(s,"MD5");

        }

       

        public static bool In(this object o, IEnumerable b)

        {

            foreach(object obj in b)

            {

                if(obj==o)

                return true;

            }

            return false;

        }       

}

 

// 调用扩展方法

Console.WriteLine("123456".MD5Hash());

Console.WriteLine("1".In(new[]{"1","2","3"}));

 

２.VS２００８正式版Linq中添加删除方法等函数的更改在添加，更新和删除实体对象时，其函数名更改如下。

Beta 2 Name	RTM Name
Add	InsertOnSubmit
AddAll	InsertAllOnSubmit
Remove	DeleteOnSubmit
RemoveAll	DeleteAllOnSubmit

We have also changed the members of ChangeSet to match these new names:

Beta 2 Name	RTM Name
AddedEntities	Inserts
RemovedEntities	Deletes
ModifiedEntities	Updates

 参考：http://www.cnblogs.com/126/archive/2007/11/28/976006.html