Wednesday, 22 May 2013

Generate Random Password


Generate Random Password


.aspxcode

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="GenerateRandompassword with UserInput.aspx.cs" Inherits="RandomNumber_GenerateRandompassword_with_UserInput" %>

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

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
     Password Length: &nbsp;&nbsp; <asp:TextBox ID="txtPassLength" runat="server"></asp:TextBox>
        <br />
        Random Password: <asp:TextBox ID="txtpassword" runat="server"></asp:TextBox>
        <br />
        <br />
        <asp:Button ID="Button1" runat="server" onclick="Button1_Click"
            Text="Generate Password" />
        <br />
    </div>
    </form>
</body>
</html>


.cs code:

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Collections.Generic;

public partial class RandomNumber_GenerateRandompassword_with_UserInput : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        string allowedChars = "";
        allowedChars = "a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,";
        allowedChars += "A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,";
        allowedChars += "1,2,3,4,5,6,7,8,9,0,!,@,#,$,%,&,?";
        char[] sep = { ',' };
        string[] arr = allowedChars.Split(sep);
        string passwordString = "";
        string temp = "";
        Random rand = new Random();
        for (int i = 0; i < Convert.ToInt32(txtPassLength.Text); i++)
        {
            temp = arr[rand.Next(0, arr.Length)];
            passwordString += temp;
        }
        txtpassword.Text = passwordString;
    }
}

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