asp.net 連接 Access 的幾種方法

本文轉載自查看原文 2012-01-03 13:33 13105

web.config

<?xml version= " 1.0 " encoding= " utf-8 "?>



<configuration>
  <appSettings>
    <add key= " AccessConnString " value= " provider=microsoft.jet.oledb.4.0;data source= "/>
    <add key= " AccessDbPath " value= " ~/App_Data/guestbook.mdb "/>
  </appSettings>
  <connectionStrings>
    <add name= " AccessConnectionString "  connectionString= " Provider=Microsoft.Jet.OleDb.4.0;Data Source= " providerName= " System.Data.OleDb "/>
    <add name= " Access_Path " connectionString= " ~/App_Data/guestbook.mdb "/>
    <add name= " SqlConnectionString " connectionString= " Data Source=localhost;Initial Catalog=guestbook;User ID=sa;password=123456; " providerName= " System.Data.SqlClient "/>
    <add name= " OracleConnectionString " connectionString= " Data Source=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=xp2008)(PORT=1521)))(CONNECT_DATA=(SID=guandb)(SERVER=DEDICATED)));User ID=system;Password=k2763826;Unicode=True " providerName= " System.Data.OracleClient "/>
  </connectionStrings>
  <system.web>
        <compilation debug= " true " targetFramework= " 4.0 " />
    </system.web>

</configuration>

<?xml version= " 1.0 " encoding= " utf-8 "?>



<configuration>
  <appSettings>
    <add key= " AccessConnString " value= " provider=microsoft.jet.oledb.4.0;data source= "/>
    <add key= " AccessDbPath " value= " ~/App_Data/guestbook.mdb "/>
  </appSettings>
  <connectionStrings>
    <add name= " AccessConnectionString " connectionString= " Provider=Microsoft.Jet.Oledb.4.0;data source= "/>
    <add name= " Access_Path " connectionString= " ~/App_Data/guestbook.mdb "/>
    <add name= " SqlConnectionString " connectionString= " Data Source=localhost;Initial Catalog=HuaRunDb;User ID=sa;password=123456; " providerName= " System.Data.SqlClient "/>
  </connectionStrings>
  <system.web>
        <compilation debug= " true " targetFramework= " 4.0 " />
    </system.web>

</configuration>

后台 aspx.CS

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Configuration;
using System.Configuration;
using System.Data.OleDb;
using System.Data;

namespace TestOracle
{
     public partial class TestConnect : System.Web.UI.Page
    {
         public static readonly string connStr1 = System.Web.Configuration.WebConfigurationManager.ConnectionStrings[ " AccessConnectionString "].ConnectionString+ HttpContext.Current.Server.MapPath(WebConfigurationManager.ConnectionStrings[ " Access_Path "].ConnectionString);
         public static readonly string connStr2 = System.Configuration.ConfigurationManager.AppSettings[ " AccessConnString "].ToString() + System.Web.HttpContext.Current.Server.MapPath(ConfigurationManager.AppSettings[ " AccessDbPath "]) + " ; ";
         public static readonly string connStr3 = " Provider = Microsoft.Jet.OLEDB.4.0 ;Data Source= " + HttpContext.Current.Server.MapPath( " ~/App_Data/guestbook.mdb ");
         protected void Page_Load( object sender, EventArgs e)
        {

        }

         protected void Button1_Click( object sender, EventArgs e)
        {
            OleDbConnection conn = new OleDbConnection(connStr1);
             try
            {
                conn.Open();
                 string sql = " select * from GtContent ";
                OleDbDataAdapter myadapter = new OleDbDataAdapter(sql, conn);
                DataSet ds = new DataSet();
                myadapter.Fill(ds);

                 this.GridView1.DataSource = ds;
                 this.GridView1.DataBind();
                 this.Label1.Text = " 數據庫連接成功！ ";
            }
             catch (Exception ee)
            {
                 this.Label1.Text = ee.ToString();
            }

        }
    }
}

connStr1 ,connStr2 ，connStr3

用這三個連接字符串哪個都可以。

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