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代码如下:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<center>
<h2><font face="宋体">访问数据库的通用代码实例</font>
</h2>
</center>
<body>
<form id="form1" runat="server">
<div>
<font face="宋体">
<p align="center">1.请输入相应数据库连接字符串</p>
<p align="center">
<asp:TextBox id="ConnStrTextBox" runat="server" Width="600"></asp:TextBox>
</p>
<p align="center">2.请输入相应SQL查询命令语句</p>
<p align="center">
<asp:TextBox id="SqlTextTextBox" runat="server" Width="600"></asp:TextBox>
</p>
<p align="center">3.请选择所连接的数据库类型</p>
<p align="center">
<asp:DropDownList ID="DBDropDownList" runat="server" Width="204px">
<asp:ListItem Selected="True">Access</asp:ListItem>
<asp:ListItem>SQLServer</asp:ListItem>
<asp:ListItem>Oracle</asp:ListItem>
<asp:ListItem>DB2</asp:ListItem>
</asp:DropDownList>
</p>
<p align="center">
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="通用数据库连接代码测试" />
</p>
<p align="center">
<asp:Label id="lblMessage" runat="server" Font-Bold="True" ForeColor="Red"></asp:Label>
</p>
</form>
</font>
</div>
asp.net页面
代码如下:
using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
//通用数据库连接代码，这里以连接Access数据库为测试示例
if (!IsPostBack)
{
ConnStrTextBox.Text = "Provider=Microsoft.Jet.OLEDB.4.0; Data source=" + Server.MapPath("User.mdb");
SqlTextTextBox.Text = "Select COUNT(*) From Info Where Name='小顾'";
lblMessage.Text = "";
}
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