Default.aspx.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;

namespace 客户订单管理2
{
    public partial class Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            信息提示.Value = "";
            Session["login"] = "false";
        }
        
        protected void Button1_Click(object sender, EventArgs e)
        {
            if (evk_username.Text == "")
            {
                信息提示.Value = "用户名称不能为空 ！  ";
                return;
            }
            if (evk_username.Text.IndexOf("\'") >= 0 || password.Text.IndexOf("\'") >= 0)
            {
                信息提示.Value = "用户名称或用户密码中有非法字符 ！  ";
                return;
            }
            string sql = "select * from 系统_用户 where 用户名称='" + evk_username.Text + "' and isnull(用户标识,0) = 0";
            SqlConnection conn = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["默认连接_3HK0R6GAS"].ConnectionString);
            DataTable loginTable = new DataTable();
            SqlDataAdapter sda = new SqlDataAdapter();
            sda.SelectCommand = new SqlCommand(sql, conn);
            SqlCommandBuilder scb = new SqlCommandBuilder(sda);
            SqlCommand sqlCmd = new SqlCommand();
            try
            {
                conn.Open();
                int count = sda.Fill(loginTable);
                if (count > 0)
                {
                    if (loginTable.Rows[0]["工作日期"] == DBNull.Value || (DateTime.Now - Convert.ToDateTime(loginTable.Rows[0]["工作日期"])).Minutes > 5 || (DateTime.Now - Convert.ToDateTime(loginTable.Rows[0]["工作日期"])).Hours > 0)
                    {
                        loginTable.Rows[0]["尝试次数"] = 0;
                        loginTable.Rows[0]["工作日期"] = DateTime.Now;
                        sda.Update(loginTable);
                    }
                    if ((int)loginTable.Rows[0]["尝试次数"] >= 5)
                    {
                        信息提示.Value = "密码输入错误次数太多，请稍后再试 ！  ";
                    }
                    else
                    {
                        if (loginTable.Rows[0]["用户密码"].ToString().Trim() == password.Text.Trim() || loginTable.Rows[0]["用户密码"] == DBNull.Value  && password.Text.Trim() == "")
                        {
                            loginTable.Rows[0]["工作日期"] = DateTime.Now;