Linq to SQL：如何使用现有的业务对象（手写）

发布于 2024-08-29 04:40:35 字数 514 浏览 3 评论 0原文

我试图在我的页面之一实现 LINQ 2 SQL 实现，以将数据加载到数据网格。下面是

using (NorthwindDataContext context = new NorthwindDataContext())
{
  var customers =from c in context.Customers  select c;   // Line 1
  gridViewCustomers.DataSource = customers;
  gridViewCustomers.DataBind();
}

我在第 1 行中放置断点以检查正在加载到客户中的类型的代码。但是我无法那里什么也没看到。该客户属于什么类型？

我想把从表中获取数据的代码放在数据访问层中，这是一个单独的类库，并且想从 UI 中调用它。数据访问层中的方法的返回类型应该是什么？我已经有另一个类库，其中包含业务对象/实体（例如：学生）。在使用 LINQ 2SQL 内容之前，我将其与普通 ADO.NET 内容一起使用。我怎样才能使其完全工作。请提供建议

原文

I was trying to implement a LINQ 2 SQL implementation to one of my page to load the data to a datagrid.The below is the code

using (NorthwindDataContext context = new NorthwindDataContext())
{
  var customers =from c in context.Customers  select c;   // Line 1
  gridViewCustomers.DataSource = customers;
  gridViewCustomers.DataBind();
}

I put a break point in the Line 1 to examine what type is being loaded into customer .But i couldn't see anything there.
What type this customer is of ?

I wanted to put the code to fetch data from Tables in my data access layer which is a seperate classlibrary and would like to call it from UI.What should be the return type of my method in Data access layer ? I already have a another class library which holds buisness objects/entities (Ex: Student).I was using this with Normal ADO.NET stuff before using the LINQ 2SQL stuff.How can i make it work altogether .Kindly advice

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