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利用JQuery弹出层加载数据代码
asp.net dataview做无限极分类的又一用法
asp.net ckeditor编辑器的使用方法
告别ADO.NET实现应用系统无缝切换的烦恼(总结篇)
asp.net 实现动态显示当前时间(不用javascript不考虑开销)
.net动态显示当前时间(客户端javascript)
asp.net 结合YUI 3.0小示例
asp.net 取消缓存相关问题说明
asp.net 计划任务管理程序实现,多线程任务加载
ASP.NET 跨页面传值方法
asp.net中url地址传送中文参数时的两种解决方案
Asp.net 菜单控件简洁版
asp.net jQuery Ajax用户登录功能的实现
asp.net SharpZipLib的压缩与解压问题
asp.net url重写后页面回传问题
asp.net与Discuz!NT整合集成实例教程
Discuz!NT 3与asp.net 整合的实例教程
测试控制台使用方法
.net 动态标题实现方法
asp.net *.ashx类型的文件使用说明

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: 189 ::
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.