<connectionStrings> <add name="ConnectionString" connectionString="user id=用户名;password=密码;initial catalog=数据库名称;data source=服务器名称"/> </connectionStrings>

using System.Configuration; using System.Data; using System.Data.SqlClient;

SqlConnection con; protected void Page_Load(object sender, EventArgs e) { ConnectDB(); } private void ConnectDB() { string ConString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString; con = new SqlConnection(ConString); con.Open(); SqlCommand com = new SqlCommand(); SqlDataReader sdr; string sqlstr = "select * from item"; com.CommandText = sqlstr; com.Connection = con; sdr = com.ExecuteReader(); while (sdr.Read()) { Response.Write(sdr["字段名"].ToString()+"</br>"); } sdr.Close(); sdr = null; }