Linq To SQL学习(Part1)
从今天开始,学习Linq To SQL
数据库:Northwind,如果你的机器上还没有该数据库,点击这儿下载
[Demo下载]
(什么是Linq To SQL以及使用LINQ To SQL对数据库建模在这里就不做介绍了)
目的:用Linq To SQL实现对数据库的查询、操作(增,删,改)、以及调用存储过程和在服务器端分页查询
为了测试,这里会用到下面一个存储过程:
GetProductsByCategory.sql
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注:以下代码只是为了做测试,所以在写的过程中没有按照严格的编码规范来写,望谅解。
前台页面:LinqSample.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="LinqSample.aspx.cs" Inherits="LinqSample" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Product</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView1" runat="server">
</asp:GridView>
<asp:Button ID="Select" runat="server" Text="Show" onclick="Select_Click" />
<asp:Button ID="Update" runat="server" Text="Update" onclick="Update_Click" />
<asp:Button ID="Insert" runat="server" Text="Insert" onclick="Insert_Click" />
<asp:Button ID="Delete" runat="server" Text="Delete" onclick="Delete_Click" />
<asp:Button ID="WithProcedure" runat="server" Text="WithProcedure" onclick="WithProcedure_Click" />
<asp:Button ID="DivisionPage" runat="server" Text="在服务器端分页查询"
onclick="DivisionPage_Click" />
</div>
<div runat="server" id="msg" style="color:Red; font-size:larger"></div>
</form>
</body>
</html>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Product</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView1" runat="server">
</asp:GridView>
<asp:Button ID="Select" runat="server" Text="Show" onclick="Select_Click" />
<asp:Button ID="Update" runat="server" Text="Update" onclick="Update_Click" />
<asp:Button ID="Insert" runat="server" Text="Insert" onclick="Insert_Click" />
<asp:Button ID="Delete" runat="server" Text="Delete" onclick="Delete_Click" />
<asp:Button ID="WithProcedure" runat="server" Text="WithProcedure" onclick="WithProcedure_Click" />
<asp:Button ID="DivisionPage" runat="server" Text="在服务器端分页查询"
onclick="DivisionPage_Click" />
</div>
<div runat="server" id="msg" style="color:Red; font-size:larger"></div>
</form>
</body>
</html>
后台代码:LinqSample.aspx.cs
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