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
自定义控件（支持模板）
自定义控件（模板+数据绑定）
自定义控件(可以动态加载用户控件)
在代码隐藏中遍历当前页的所有控件
关于C#调用Office Web Components绘图的问题
利用Visual C#打造一个平滑的进度条
[VB] 防止程序运行多个实例
Visual Studio.Net 快捷键表
WinForm中ToolBar与TabControl的一些事件写法（C#）
【翻译】Managed DirectX（第六章）
利用.NET语言开发自己的脚本语言(一)
自动改变CheckBoxList选择项目的背景颜色
vb.net中windows服务的创建
BASE64编码规则及C#实现
.net中判断该应用程序是否已经启动,防止重复启动
XML Web Service 数据交换
开发花絮：一个DataList的ItemCommand事件意外
Snake.Net中的ORM(二)
ASP操作XML数据小结
可用来显示空值的时间选择控件4

No. « 134 135 136 137 »

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: 56 ::
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.