qq_44975431的博客

//string sql="select count(1) from UserInfo where UserID='"+uName+"' and UserPwd='"+uPwd+"'"; string sql = "select count(1) from UserInfo where UserID=@UserName and UserPwd=@UserPwd"; //创建参数对象 MySqlParameter mySqlParamet

Authors： Nie BaoGen登陆界面实现后台代码实现//获取用户输入信息 string uName = txtUserId.Text.Trim(); string uPwd = txtUserPwd.Text.Trim(); //判断是否为空，值为空或者空字符串 if (string.IsNullOrEmpty(uName)) { //设