DotNet.WebApplication/ValidateHelper.aspx.cs

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//-----------------------------------------------------------------
// All Rights Reserved , Copyright (C) 2013 , Hairihan TECH, Ltd .
//-----------------------------------------------------------------

using System;
using System.Text.RegularExpressions;
using System.Web;
using System.Web.UI;
using DotNet.Utilities;

public partial class ValidateHelper : Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        DrawingVerifyCodeImage();
    }

    #region VerifyCode
    public static string SessionNameVerifyCode
    {
        get
        {
            return "VerifyCode";
        }
    }

    /// <summary>
    /// 画安全码图片
    /// </summary>
    public static void DrawingVerifyCodeImage()
    {
        VerifyCodeImage verifyCodeImage = new VerifyCodeImage();
        // 取随机码
        string code = verifyCodeImage.CreateVerifyCode().ToUpper();
        // 输出图片
        verifyCodeImage.CreateImageOnPage(code, 3, HttpContext.Current);
        // 使用Session取验证码的值              
        HttpContext.Current.Session[SessionNameVerifyCode] = code;                        
    }

    /// <summary>
    /// 验证安全码
    /// </summary>
    /// <param name="code">输入的安全码</param>
    /// <returns>成功与否</returns>
    public static bool ValidateVerifyCode(string code)
    {
        if (HttpContext.Current.Session[SessionNameVerifyCode] != null)
        {
            string verifyCode = HttpContext.Current.Session[SessionNameVerifyCode].ToString().Trim();
            if (verifyCode != string.Empty && verifyCode.ToLower() == code.ToLower())
            {
                return true;
            }
        }
        return false;
    }
    #endregion

    #region Validate