asp.net2.0密码强度验证

 

1、建立Default.aspx文件，代码如下：

<%@ 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">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>无标题页</title>
</head>
<script language="javascript" type="text/javascript"> 
    //CharMode函数 
    //测试某个字符是属于哪一类. 
    function CharMode(iN){ 
        if (iN>=48 && iN <=57) //数字 
        return 1; 
        if (iN>=65 && iN <=90) //大写字母 
        return 2; 
        if (iN>=97 && iN <=122) //小写 
        return 4; 
        else 
        return 8; //特殊字符 
    } 
    //bitTotal函数 
    //计算出当前密码当中一共有多少种模式 
    function bitTotal(num){ 
        modes=0; 
        for (i=0;i<4;i++){ 
        if (num & 1) modes++; 
        num>>>=1; 
        } 
        return modes; 
    } 
    //checkStrong函数 
    //返回密码的强度级别 

    function checkStrong(sPW){ 
        if (sPW.length<=4) 
        return 0; //密码太短 
        Modes=0; 
        for (i=0;i<sPW.length;i++){ 
        //测试每一个字符的类别并统计一共有多少种模式. 
        Modes|=CharMode(sPW.charCodeAt(i)); 
        } 
        return bitTotal(Modes); 
    } 

    //pwStrength函数 
    //当用户放开键盘或密码输入框失去焦点时,根据不同的级别显示不同的颜色 
    function pwStrength(pwd){ 
        O_color="#e0f0ff"; 
        L_color="#FF0000"; 
        M_color="#FF9900"; 
        H_color="#33CC00"; 
        if (pwd==null||pwd==''){ 
            Lcolor=Mcolor=Hcolor=O_color; 
        } 
        else
        { 
            S_level=checkStrong(pwd); 
            switch(S_level)
            { 
                case 0: 
                Lcolor=Mcolor=Hcolor=O_color; 
                case 1: 
                Lcolor=L_color; 
                Mcolor=Hcolor=O_color; 
                break; 
                case 2: 
                Lcolor=Mcolor=M_color; 
                Hcolor=O_color; 
                break; 
                default: 
                Lcolor=Mcolor=Hcolor=H_color; 
            } 
        } 

        document.getElementById("strength_L").style.background=Lcolor; 
        document.getElementById("strength_M").style.background=Mcolor; 
        document.getElementById("strength_H").style.background=Hcolor; 
        return; 
    } 

</script> 
<body>
    <form id="form1" runat="server">
    <div>
        输入密码:<asp:TextBox ID="TextBox1" runat="server" onKeyUp=pwStrength(this.value) onBlur=pwStrength(this.value) ></asp:TextBox><br />
        密码强度:
        <table border="1" cellpadding="1" borderColorDark="#fdfeff" borderColorLight="#99ccff" cellspacing="1" style="width: 200px; display: inline; background-color:#e0f0ff">
            <tr>
                <td id="strength_L" style="width: 100px; height: 19px;" align="center">
                    弱</td>
                <td id="strength_M" style="width: 100px; height: 19px;" align="center">
                    中</td>
                <td id="strength_H" style="width: 100px; height: 19px;" align="center">
                    强</td>
            </tr>
        </table>
    </div>
    </form>
</body>
</html>

2、Default.aspx.cs代码如下：

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;

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

    }
}

3：运行效果如下：