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
C# Quoted-Printable编码、解码
asp.net Google的translate工具翻译 API
.NET读取所有目录下文件正则匹配文本电子邮件
asp.net 半角全角转化工具
AjaxControlToolKit 显示浏览者本地语言的方法
asp.net HTML文件上传标签
ASP.NET 绑定DataSet中的多个表
ASP.NET 重定向的几种方法小结
Asp.Net 重定向必须要知道的一些资料
ASP.NET 导出到Excel时保留换行的代码
Asp.Net Cache缓存使用代码
document.getElementsByName和document.getElementById 在IE与FF中不同实现
GridView单元格合并
asp.net 大文件上传控件
asp.net 日期函数 某月的第一天和最后一天的日期
asp.net 时间类 一周的周一和周末的日期
C# javaScript函数的相互调用
asp.net membership 密码重设
"虚拟路径"..."映射到另一个应用程序，这是不允许的！
如何传值在2个页面之间 要求不刷新父页面，并且不能用Querystring传值

No. « 52 53 54 55 »

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: 211 ::
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.