public virtual void Refresh()
 {
     var img = new ImageBuilder();
     const string chars = "1234567890qwertyuioplkjhgfdsazxcvbnmQWERTYUIOPLKJHGFDSAZXCVBNM";
     var code = string.Empty;
     var ramdon = new Random();
     for (var i = 0; i < 4; i++)
     {
         code += chars.Substring(ramdon.Next(0, chars.Length - 1), 1);
     }
     var bmp = img.Generate(code);
     Session[Config.SessionKey] = code;
     bmp.Save(HttpContext.Response.OutputStream, ImageFormat.Jpeg);
 }
Esempio n. 2
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        public virtual void Refresh()
        {
            var          img    = new ImageBuilder();
            const string chars  = "1234567890qwertyuioplkjhgfdsazxcvbnmQWERTYUIOPLKJHGFDSAZXCVBNM";
            var          code   = string.Empty;
            var          ramdon = new Random();

            for (var i = 0; i < 4; i++)
            {
                code += chars.Substring(ramdon.Next(0, chars.Length - 1), 1);
            }
            var bmp = img.Generate(code);

            Session[Config.SessionKey] = code;
            bmp.Save(HttpContext.Response.OutputStream, ImageFormat.Jpeg);
        }