c#產生隨機密碼

最後更新：2018-12-05 來源：互聯網

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using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Windows.Forms;

public partial class _Default : System.Web.UI.Page
{
    public static int counter = 0;
    protected void Page_Load(object sender, EventArgs e)
    {
    }
    public static string MakePassword(string pwdchars, int pwdlen)
    {
        //判斷隨機密碼的長度
        string tmpstr = "";
        int iRandNum;
        if (pwdlen > pwdchars.Length)
        {
            return "長度過長！" + pwdchars.Length;
        }
        Random rnd = new Random();
        for (int i = 0; i < pwdlen; i++)
        {
            iRandNum = rnd.Next(pwdchars.Length);
            tmpstr += pwdchars[iRandNum];
        }
        return tmpstr;
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        int t1 = Convert.ToInt32(TextBox1.Text);
        if (t1 < 10 || t1 > 20 || t1 < 0)
        {
           MessageBox.Show("指定密碼失敗！");
        }//判斷指定的密碼長度是否符合
        else
        {
            string randomchars = "abcdefghijklmnopqrstuvwxyz~!@#$%^&*()_+|0123456789~!@#$%^&*()_+|ABCDEFGHIJKLMNOPQRSTUVWXYZ~!@#$%^&*()_+|";
            string password = MakePassword(randomchars, Convert.ToInt32(TextBox1.Text));
            TextBox2.Text = password;
        }//產生隨機的密碼值
    }//判斷輸入的密碼是否符合隨機產生的密碼
    protected void Button2_Click(object sender, EventArgs e)
    {
        if (TextBox3.Text.Trim()==TextBox2.Text.Trim())
        {
           MessageBox.Show("成功！");
           Response.Write("您現在的密碼是："+"<font color=red>"+TextBox3.Text+"</font>");

        }
        else
        {
            MessageBox.Show("失敗！");
        }

    }

protected void TextBox1_TextChanged(object sender, EventArgs e)
{

}
}

HTML代碼：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

本文來自CSDN部落格，轉載請標明出處：http://blog.csdn.net/zhangsiyan/archive/2010/08/02/5783138.aspx

本文章原先以中文撰寫並發佈於 aliyun.com，亦設英文版本，僅作資訊用途。本網站不對文章的準確性，完整性或可靠性或其任何翻譯作出任何明示或暗示的陳述或保證。如對該文章有任何疑慮或投訴，請傳送電郵至 info-contact@alibabacloud.com 並提供相關疑慮或投訴的詳細說明。職員會於 5 個工作天內與您聯絡，一經驗證之後，即會刪除該侵權內容。

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c#產生隨機密碼

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