基本信息
源码名称:C# 获取验证 验证码 区分大小写 字母和数字
源码大小:0.05M
文件格式:.rar
开发语言:C#
更新时间:2017-01-09
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   源码介绍

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace json
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            Ran();
        }



        private void button2_Click(object sender, EventArgs e)
        {
            Ran();
        }


        public void  Ran()
        {
            try
            {
                Random rad = new Random();
                // int val = rad.Next(1000, 10000);
                // textBox1.Text = val.ToString();

                string str = @"0123456789abcdefghigklmnopqrstuvwxyzABCDEFGHIGKLMNOPQRSTUVWXYZ";
                textBox1.Text = str.Substring(0   rad.Next(61), 4);


            }
            catch(Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string str1=textBox1.Text.ToString();
            string str2=textBox2.Text.ToString();
            bool ret= Convert.ToBoolean(  String.Compare(str1, str2, true));//忽略字母的大小写
            
            if (ret)
            {
                MessageBox.Show("验证失败!");
                Ran();
            }
            else
            {
                MessageBox.Show("验证成功!");
                Ran();
            }
        }
    }
}