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asp.net web项目连接mysql数据库

2013-11-07 19:24 323 查看
asp.net连接mysql数据库

首先需要一个MySql.Data.dll文件
点击下载

1.创建一个ASP.NET空Web应用程序

2.添加引用

3.添加web窗体

4.在生成的代码中引用using MySql.Data.MySqlClient;

5.连接mysql

using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using MySql.Data.MySqlClient;

namespace DataRefresh
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        MySqlConnection mySqlConn;//mysql连接对象

        protected void Page_Load(object sender, EventArgs e)
        {
            string connStr = "Database=school;Data Source=localhost;User Id=root;Password=123";//连接字符串
            mySqlConn = new MySqlConnection(connStr);
            mySqlConn.Open();

            bind();
        }

        public void bind()
        {
            //创建MySqlDataAdapter对象执行查询
            MySqlDataAdapter DataAdapter = new MySqlDataAdapter("select * from student", mySqlConn);
            DataSet dataset = new DataSet();
            // 填充DataSet对象
            DataAdapter.Fill(dataset, "student");
            //将数据显示在gridview中
            GridView1.DataSource = dataset;
            GridView1.DataKeyNames = new string[] { "s_no" };//主键
            GridView1.DataBind();
            
        }

连接字符串:Database:数据库的名字;DataSource:数据库地址;User Id:用户名;Password:密码

bind()方法是将查询结果显示到gridview控件中(以后也能用于刷新)

aspx代码

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="DataRefresh.WebForm1" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title>界面增删查改</title>
</head>
<body style="height: 34px">
    
    <form id="form1" runat="server">

        <div id="container">
        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"  Font-Size="12px" Width="591px" CellPadding="4" ForeColor="#333333" GridLines="None"
            OnRowDeleting="GridView1_RowDeleting" OnSelectedIndexChanged="GridView1_SelectedIndexChanged" OnRowCommand="GridView1_RowCommand"
            OnRowEditing="GridView1_RowEditing">
            <AlternatingRowStyle BackColor="White" ForeColor="#284775" />
          <Columns>
            
            <asp:BoundField DataField="s_no" HeaderText="学号" />
            <asp:BoundField DataField="s_name" HeaderText="名字" />
            <asp:BoundField DataField="s_age" HeaderText="出生日期" DataFormatString="{0:d}" HtmlEncode="False" />
            <asp:BoundField DataField="s_sex" HeaderText="性别" />
            <asp:CommandField HeaderText="编辑" ShowEditButton="true"/>
              <asp:CommandField HeaderText="删除" ShowDeleteButton="true">
                  
              </asp:CommandField>
              
          </Columns>
            <EditRowStyle BackColor="#999999" />
            <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
          <HeaderStyle BackColor="#5D7B9D" Font-Size="12px" HorizontalAlign="Center" Font-Bold="True" ForeColor="White" />
            <RowStyle HorizontalAlign="Center" BackColor="#F7F6F3" ForeColor="#333333" />
            <PagerStyle HorizontalAlign="Center" BackColor="#284775" ForeColor="White" />
            <SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
            <SortedAscendingCellStyle BackColor="#E9E7E2" />
            <SortedAscendingHeaderStyle BackColor="#506C8C" />
            <SortedDescendingCellStyle BackColor="#FFFDF8" />
            <SortedDescendingHeaderStyle BackColor="#6F8DAE" />
        </asp:GridView>
    </div>

        <p>
            <asp:Button ID="Btn_add" runat="server" Text="添加" OnClick="Btn_add_Click" />
        </p>

    </form>
    
    
</body>
</html>


其中主要是gridview控件,因为要将数据库中的数据显示出来,所以得根据数据来改变

这是我的查询结果:

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