ASP.NET笔记之 图库权限设置的方法

    
    <asp:Button ID="btnLogin" runat="server" onclick="btnLogin_Click" Text="登陆" />
    </form>
</body>
</html>

登陆页面：login.aspx.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using 图片下载.DAL.DataSetPicTableAdapters;

namespace 图片下载
{
    public partial class login : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void btnLogin_Click(object sender, EventArgs e)
        {
            T_userInfoTableAdapter adapter = new T_userInfoTableAdapter();
            var data = adapter.GetDataByUserName(txtUserName.Text);
            if (data.Count <= 0)
            {
                lablwarn.Text = "用户名不存在";
                lablwarn.Visible = true;
            }
            else {
                //LinQ的single的方法，返回为一条数据
                //数据为0 或者或者多条，则抛出异常，把错误扼杀在摇篮中
                var user = data.Single();

                //判断错误时间和错误次数是否为空
                //计算当前时间和和上次错误分钟差
                if (!user.IssErrorTimeNull() && !user.IssLastErrorTimeNull()) {
                    double time = (DateTime.Now - user.sLastErrorTime).TotalMinutes;
                    if (time <= 30 && user.sErrorTime > 5)
                    {