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
一个无刷新效果定时自动更新页面的例子
ASP.NET2.0的控件状态和视图状态探讨
用好ASP.NET 2.0的URL映射
详解：如何在.NET中访问MySQL数据库？
如何实现Asp与Asp.Net共享Session
利用.net的强大功能发送email
.NET中加密与解密QueryString的方法
Asp.net生成htm静态文件的两种途径
C#定时器的使用
从XML文件中读取数据绑定到DropDownList
ASP.NET 2.0 里输出文本格式流
用.net动态创建类的实例
.Net下的MSMQ的同步异步调用
ASP.NET 2.0实现防止同一用户同时登陆
asp.NET自定义服务器控件内部细节
组合.NET数据控件构建强大用户接口
用ASP.NET 2.0 FormView控件控制显示
菜鸟也学习ASP.NET如何读取数据库内容
教你简单方便获取Web设计的免费资源
专家详解：复杂表达式的执行步骤

No. « 4 5 6 7 »

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: 85 ::
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.