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 注册

public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            string txtEmail = context.Request["txtEmail"];
            string userName = context.Request["txtName"];
            Regex reg=new Regex(@"^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$");
            if (!reg.IsMatch(txtEmail))
            {
                context.Response.Write("邮箱错误!!");
                return;
            }
           
        }

 

画验证码

public class ValidateCode : IHttpHandler, IRequiresSessionState
{
    HttpContext context;
    public void ProcessRequest (HttpContext context1) {
        this.context = context1;
        CreateCheckCodeImage(GenerateCheckCode());
    }

    private string GenerateCheckCode()
    {
        int number;
        char code;
        string checkCode = String.Empty;

        System.Random random = new Random();

        for (int i = 0; i < 5; i++)
        {
            number = random.Next();

            if (number % 2 == 0)
                code = (char)('0' + (char)(number % 10));
            else
                code = (char)('0' + (char)(number % 10));
            //code = (char)('A' + (char)(number % 26));

            checkCode += code.ToString();
        }

        //Response.Cookies.Add(new HttpCookie("CheckCode", checkCode));
        context.Session.Add("vCode", checkCode);
        return checkCode;
    }

    private void CreateCheckCodeImage(string checkCode)
    {
        if (checkCode == null || checkCode.Trim() == String.Empty)
            return;

        System.Drawing.Bitmap image = new System.Drawing.Bitmap((int)Math.Ceiling((checkCode.Length * 12.5)), 22);
        Graphics g = Graphics.FromImage(image);

        try
        {
            //生成随机生成器
            Random random = new Random();

            //清空图片背景色
            g.Clear(Color.White);

            //画图片的背景噪音线
            for (int i = 0; i < 25; i++)
            {
                int x1 = random.Next(image.Width);
                int x2 = random.Next(image.Width);
                int y1 = random.Next(image.Height);
                int y2 = random.Next(image.Height);

                g.DrawLine(new Pen(Color.Silver), x1, y1, x2, y2);
            }

            Font font = new System.Drawing.Font("Arial", 12, (System.Drawing.FontStyle.Bold | System.Drawing.FontStyle.Italic));
            System.Drawing.Drawing2D.LinearGradientBrush brush = new System.Drawing.Drawing2D.LinearGradientBrush(new Rectangle(0, 0, image.Width, image.Height), Color.Blue, Color.DarkRed, 1.2f, true);
            g.DrawString(checkCode, font, brush, 2, 2);

            //画图片的前景噪音点
            for (int i = 0; i < 100; i++)
            {
                int x = random.Next(image.Width);
                int y = random.Next(image.Height);

                image.SetPixel(x, y, Color.FromArgb(random.Next()));
            }

            //画图片的边框线
            g.DrawRectangle(new Pen(Color.Silver), 0, 0, image.Width - 1, image.Height - 1);

            System.IO.MemoryStream ms = new System.IO.MemoryStream();
            image.Save(ms, System.Drawing.Imaging.ImageFormat.Gif);
            context.Response.ClearContent();
            context.Response.ContentType = "image/Gif";
            context.Response.BinaryWrite(ms.ToArray());
        }
        finally
        {
            g.Dispose();
            image.Dispose();
        }
    }

 

正则校验

public class ValidateReg : IHttpHandler,System.Web.SessionState.IRequiresSessionState
    {
        BLL.UserManager userManager = new BLL.UserManager();
        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
           string action=context.Request["action"];
           if (action == "mail")
           {
               CheckUserMail(context);
           }
           else if (action == "code")//验证码校验
           {
               string validateCode = context.Request["validateCode"];
               if (Common.WebCommon.CheckValidateCode(validateCode))
               {
                   context.Response.Write("验证码正确!!");
               }
               else
               {
                   context.Response.Write("验证码错误!!");
               }
           }
                
           
        }
        /// <summary>
        /// 校验用户邮箱
        /// </summary>
        private void CheckUserMail(HttpContext context)
        {
            string userMail = context.Request["userMail"];
            if (userManager.CheckUserMail(userMail))
            {
                context.Response.Write("邮箱已经存在");
            }
            else
            {
                context.Response.Write("邮箱可以注册");
            }
        }
       
           
       

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }

 

 

公共类校验

  public static void GetFilePath(object obj)
       {
           HttpContext context = (HttpContext)obj;
           string filePath = context.Request.MapPath("/Images/body.jpg");

          // string filePath = HostingEnvironment.MapPath("/Images/body.jpg");
           //string filePath=
          // return "";
       }
       /// <summary>
       /// 完成验证码校验
       /// </summary>
       /// <returns></returns>
       public static bool CheckValidateCode(string validateCode)
       {
           bool isSucess = false;
           if (HttpContext.Current.Session["vCode"] != null)
           {
              // string txtCode = HttpContext.Current.Request["txtCode"];
               string sysCode =HttpContext.Current.Session["vCode"].ToString();
               if (sysCode.Equals(validateCode, StringComparison.InvariantCultureIgnoreCase))
               {
                   isSucess = true;
                   HttpContext.Current.Session["vCode"] = null;
               }

           }
           return isSucess;
       }