asp.net连接数据库读取数据示例分享

webconfig配置:

复制代码 代码如下:

  

前台aspx:

复制代码 代码如下:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="DB.aspx.cs" Inherits="DB" %>



   


   

后台代码：

复制代码 代码如下:
using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.Common;//記得要using
using System.Configuration;

public partial class DB : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        DataSet dsMSSQL = GetDataSet("select * from [Table]", "MSSQL");
        this.GridView1.DataSource = dsMSSQL;
        this.GridView1.DataBind();
    }

    protected DataSet GetDataSet(string SqlCommand,string DB)
    {
        DbProviderFactory dbProviderFactory = DbProviderFactories.GetFactory(ConfigurationManager.ConnectionStrings[DB].ProviderName);
        DbConnection dbConnection = dbProviderFactory.CreateConnection();
        dbConnection.ConnectionString = ConfigurationManager.ConnectionStrings[DB].ConnectionString;

        DataSet ds = new DataSet();

        DbCommand dbCommand = dbProviderFactory.CreateCommand();
        dbCommand.Connection = dbConnection;
        DbDataAdapter dbDataAdapter = dbProviderFactory.CreateDataAdapter();
        dbCommand.CommandText = SqlCommand;
        dbDataAdapter.SelectCommand = dbCommand;
        dbDataAdapter.Fill(ds);

        return ds;
    }
}