C#中连接SQL数据库的测试

  SqlConnection conn = new SqlConnection("Data Source=服务器名;Uid=数据库名;pwd=数据库密码;Initial Catalog=数据库名");
        conn.Open();
        if(conn.State == System.Data.ConnectionState.Open)
     {

          Response.Write("数据库连接成功！");
        
      }
        SqlCommand cmd = conn.CreateCommand();
        cmd.CommandText = "SELECT 表的列名 FROM 表名";
        string name = (string)cmd.ExecuteScalar();
        Response.Write(name);//在页面中显示
       conn.Close();