LoginFrame/Landing.cs

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Configuration;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Windows.Forms;
using BLL;

namespace LoginFrame
{
    public partial class Landing : Form
    {
        public Landing()
        {
            InitializeComponent();

            //更改背景色
            label1.Parent = pictureBox1;
            label2.Parent = pictureBox1;
            label3.Parent = pictureBox1;
            linkLabel1.Parent = pictureBox1;
            linkLabel2.Parent = pictureBox1;

            string title = ConfigurationSettings.AppSettings["title"].ToString();//窗口标题
            this.Text = title;

            this.skinEngine1.SkinFile = "../../Skins/" + ConfigurationSettings.AppSettings["image"].ToString();
            this.skinEngine1.SkinAllForm = true;
        }
        public static string checkCode = "";
        /// <summary>
        /// 产生验证码随机数
        /// </summary>
        /// <param name="CodeCount"></param>
        /// <returns></returns>
        private string GetRandomCode(int CodeCount)
        {
            string allChar = "0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F,G,H,i,J,K,M,N,P,Q,R,S,T,U,W,X,Y,Z";
            string[] allCharArray = allChar.Split(',');
            string RandomCode = "";
            int temp = -1;

            Random rand = new Random();
            for (int i = 0; i < CodeCount; i++)
            {
                if (temp != -1)
                {
                    rand = new Random(temp * i * ((int)DateTime.Now.Ticks));
                }

                int t = rand.Next(33);

                while (temp == t)
                {
                    t = rand.Next(33);
                }