C# check password strength c# - Net-Raft.com

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check password strength using C#


 282

C#


4

// default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Class1.aspx.cs" Inherits="_Default" %>
<script runat="server">

private void Passw_Check(object sender, EventArgs e)
{

string passw = PasswordStrength(input1.Value);
lbltxt.InnerHtml = passw;
}

</script>

</script>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</head>
<body>
<form runat="server">
<label>Type a password:</label>
<input runat="server" id="input1" type="text"/>
<input runat="server" id="button1" type="submit" value="Check" OnServerClick="Passw_Check"/>

<hr />
<h3> Result: </h3>
<label id="lbltxt" runat="server"></label>
</form>
</body>
</html>

// Class1.aspx.cs
using System;
using System.Web;
using System.Web.Services;
using System.Globalization;
using System.Text;
using System.Text.RegularExpressions;

public partial class _Default: System.Web.UI.Page
{

protected void Page_Load(object sender, EventArgs e)
{
}
[WebMethod]
public static string PasswordStrength(string password)
{

string strength = "Your password is strong!";

if (password.Length < 8)
strength = "Your password too short! ";
if (password.Length > 20)
strength = "Password too long! ";
if (!Regex.IsMatch(password, @"[0-9]+(\.[0-9][0-9]?)?", RegexOptions.ECMAScript))
strength = "Your password must include at least one number! ";
if (!Regex.IsMatch(password, @"^(?=.*[a-z])(?=.*[A-Z]).+$", RegexOptions.ECMAScript))
strength = "Your password must include at least one CAPS! ";
if (!Regex.IsMatch(password, @"[!,@,#,$,%,^,&,*,?,_,~,-,£,(,)]", RegexOptions.ECMAScript))
strength = "Your password must include at least one symbol! ";

return strength;

}

}


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