当前位置: 首页 > 图文教程 > 网络编程 > ASP.NET > 在ASP+中访问数据库

ASP.NET
asp.net css注释的影响
ASP.NET与数据库相关技巧
关于HtmlForm控件
三色交替的下拉列表框
精通ASP.NET中弹出窗口技术
ASP.NET Forums与现有系统整合方案示例
ASP.NET操作IIS中的虚拟目录
DataGrid与SQL Server 2000数据绑定
如何让Web应用程序在Client端实现导出报表功能
如何保证web app中的Send Email线程稳定性
关于用ASP.Net识别远程主机服务器种类
ASP.NET中上传下载文件
提高ASP.NET性能的方法
asp.net StreamReader 创建文件
asp.net如何生成图片验证码(简单)
一个.net 压缩位图至JPEG的代码
简单的SQL Server数据库数据读取与数据操作
获取网站的RSS聚合到自己的网页
.Net程序中整站通用的防SQL注入函数
asp.net生成缩略图及给原始图加水印的函数

No. « 19 20 21 22 »

技术文章搜索

关键字

ASP.NET 中的 在ASP+中访问数据库

出处:互联网   整理: 软晨网（RuanChen.com）   发布: 2009-11-03   浏览: 55 ::
收藏到网摘: n/a

In an ASP+ page ,databases can be accessed by employing ADO+ objects. In order to retrieve values from
databases through ADO+ we have to follow certain procedures which are different from those employed in ADO.

The article throws Light on Various steps involved in using ADO+ in an ASP page for retrieving the
database values for an access database.

The datagrid control provided with ASP+ is used for displaying the values retrieved from the database.

First include the language in which the asp+ page will be coded. This is specified by using Page directive
as shown below. In this example Let us use 'VB' as The language for coding ASP+ Page. The above thing can
be achieved by using the following page directive as shown below.

<%@ Page Language="VB"%>


Next Import the namespaces required for creating the Datasetcommand object and Other ADO objects such as
connection , dataset. This can be done by the following asp+ statements

<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.ADO" %>


Next create the script required for accessing the database. In this example let us use a server side
submit control whose onClick triggers The script given below

<script language="VB" runat="server">
Sub subbtn_OnClick(Sender As Object, E As EventArgs)
Dim connobj As ADOConnection
Dim dtsCmdobj As ADODataSetCommand
Dim dtSobj As DataSet
Dim str_sql As String
dim conn_str As String
str_sql = "select * from table_name"
conn_str = "DBQ=" & Server.MapPath("database.mdb") &_
";Driver={Microsoft Access Driver (*.mdb)};"

connobj = New ADOConnection(conn_str)
dtsCmdobj = New ADODataSetCommand(str_sql, connobj)
dtSobj = New DataSet()
dtsCmdob.FillDataSet(dtsobj, "table_name")
dtgrid.DataSource = dtsobj.Tables("table_name").DefaultView
dtgrid.DataBind()
End Sub
</script>


Finally place the following html in the asp+ code

<html>
<body>

<form action="db.aspx" method="post" runat="server">
<asp:Button type="submit" id="subbtn" text="Run Query" OnClick="subbtn_OnClick" runat="server" />
</form>


<asp:DataGrid id="dtgrid" HeaderStyle-Font-Bold="True" ToolTip="data Grid provided with asp+"
runat="server" maintainviewstate="false" />

</body>
</html>

Thats it! The datagrid control in ASP+ page is filled up with the values retrieved from the access
database (database.mdb)

Gopikrishna S
Gopikrishna is a specialist in ASP, MTS ,JavaScript , Vbscript, Windows DNA and VBCom . He is currently
associated with Silverline Technologies Limited Chennai.