获取Web.config的内容
<web.config>
web.config文件是一个XML文件,它的根结点是<configuration>,在<configuration>节点下的常见子节点有:
<configSections>、<appSettings>、<connectionStrings>和<system.web>。
其中<appSettings>节点主要用于配置一些网站的应用配置信息,而<connectionStrings>节点主要用于配置网站的数据库连接字符串信息。
<appSettings>节点
后台:
//获取ip string ip = System.Configuration.ConfigurationManager.AppSettings["server"];
<connectionStrings>节点
<!--连接字符串设置--> <connectionStrings> <add name="ConnString" connectionString="Data Source=GAO;Initial Catalog=HBWXDate;User ID=sa;password=sa"></add> <add name="MysqlConnString" connectionString="server=ip地址;user id=账户;pwd=密码;database=数据库名称"></add> </connectionStrings>
后台:
//获取连接字符串
string MysqlConnString = ConfigurationManager.ConnectionStrings["MysqlConnString"].ConnectionString; //根据字符串连接数据库 using (MySql.Data.MySqlClient.MySqlConnection con = new MySql.Data.MySqlClient.MySqlConnection(MysqlConnString)) { try { con.Open(); MySql.Data.MySqlClient.MySqlCommand cmd = new MySql.Data.MySqlClient.MySqlCommand(); cmd.CommandText = sql; cmd.Connection = con; MySql.Data.MySqlClient.MySqlDataAdapter sqldap = new MySql.Data.MySqlClient.MySqlDataAdapter(); sqldap.SelectCommand = cmd; System.Data.DataTable dt = new System.Data.DataTable(); sqldap.Fill(dt); return dt; } catch (Exception ex) { throw ex; } }