HOW TO GET A RANDOM VALUE IN BUTTON CLICK

HOW TO GET A RANDOM VALUE IN BUTTON CLICK

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

<!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></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
   
    </div>
    <asp:TextBox ID="TextBox1" runat="server" ToolTip="RANDOM VALUE"></asp:TextBox>
    <asp:Button ID="Button1"
        runat="server" Text="Button" onclick="Button1_Click" />
    </form>
</body>
</html>



 random.aspx.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Text;

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

    }

    private int RandomNumber(int min, int max)
    {
        Random random = new Random();
        return random.Next(min, max);
    }
    private string RandomString(int size, bool lowerCase)
    {
        StringBuilder builder = new StringBuilder();
        Random random = new Random();
        char ch;
        for (int i = 0; i < size; i++)
        {
            ch = Convert.ToChar(Convert.ToInt32(Math.Floor(26 * random.NextDouble() + 65)));
            builder.Append(ch);
        }
        if (lowerCase)
            return builder.ToString().ToLower();
        return builder.ToString();
    }

    public string GetPassword()
    {
        StringBuilder builder = new StringBuilder();
        builder.Append(RandomString(4, true));
        builder.Append(RandomNumber(1000, 9999));
        builder.Append(RandomString(2, false));
        return builder.ToString();
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        TextBox1.Text = GetPassword();
    }
}
Download source code:randomnumber