Chủ Nhật, 12 tháng 5, 2013

ASP.NET: Xây dựng bộ đếm cho Web (Web Counter)


if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[counter]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[counter]
GO

CREATE TABLE [dbo].[counter] (
 [hit] [int] NOT NULL 
) ON [PRIMARY]
GO
INSERT [dbo].[counter] (hit) VALUES (1)
GO

if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[webcounter]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)
drop procedure [dbo].[webcounter]
GO

SET QUOTED_IDENTIFIER OFF 
GO
SET ANSI_NULLS OFF 
GO

CREATE PROCEDURE dbo.webcounter
AS
BEGIN
SET NOCOUNT ON
DECLARE @hits INT
update counter set hit = hit + 1
SELECT hit from counter
END
GO
SET QUOTED_IDENTIFIER OFF 
GO
SET ANSI_NULLS ON 
GO

This is our ASP.NET page. Please modify database connection.

<%@ Page Language="VB" Debug="true" %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.SQLClient" %>

<script language="VB" runat="server">
Sub Page_Load(Source as Object, E as EventArgs)

 Dim objCon As New SQLConnection("server=ASP;User id='sa';password='123';database=dotnet")

 Dim cmd As SQLCommand = New SQLCommand("EXEC dbo.webcounter", objCon)
 objCon.Open()
 Dim r as SQLDataReader 
 r = cmd.ExecuteReader()
 r.read()
 strCounter.text = "Hit : " & r.item(0)
 end sub
</script>
<html>
<head>
</head>
<body>
<asp:label ID="strCounter" runat="server"/>
</body>
</html>
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