#在aspx文件中#
#在文本框显示提示内容#
placeholder="请输入内容"
#将输入的字符变成密码状态#
textmode="password"
#控制gridview让它不自动添加#
AutoGenerateColumns="false"

#在aspx.cs文件中#
#导入连接sqlsever的包#
using System.Data.SqlClient;
using System.Data;
#连接语句#
SqlConnection sqlconn = new SqlConnection("server=S404-38\\SQLEXPRESS;uid=sa;pwd=1;database=libnew");
string sqltext = "select id,pw from gl where id='" + id + "'and pw ='" + pw + "'";
SqlCommand cmd = new SqlCommand(sqltext,sqlconn)

　　

　时间原因暂时如此，懒癌犯了。难受