C＃ASP.NET中的动态业务对象

Question

I have ac# application where I am reading individual columns of stored procedure results into output class objects. However if the number of columns in the stored procedure changes, i have to rewrite the data access layer code.

Is there any way where changing the number of columns in the output stored procedure doesn't make me change the code in the data access layer? I am a beginner.

Answer 1

There are ORM tools that can automatically generate data access layer code for you. In the case of .NET, there is the Entity Framework.

http://msdn.microsoft.com/en-us/data/ef.aspx

Answer 2

如果您要更改返回数据的结构，并且您依赖于该结构，则无论您自己进行映射，使用ORM还是依赖简单的DataTable作为容器，都将始终导致代码更改。

Answer 3

I personally believe that, Data-First model in EF may work in this scenario. Also was going through ExpandoObjects in c# 4.5. Maybe this can work too.