public static beCaptcha crearCaptcha(int ancho, int alto, string fuenteTipo, int fuenteTamaño)
{
beCaptcha obeCaptcha = new beCaptcha();
Bitmap bmp = new Bitmap(ancho, alto);
Graphics grafico = Graphics.FromImage(bmp);
Rectangle rect = new Rectangle(0, 0, ancho, alto);
LinearGradientBrush deg = new LinearGradientBrush(rect, Color.Aqua, Color.Blue,
LinearGradientMode.BackwardDiagonal);
grafico.FillRectangle(deg, rect);
StringBuilder sb = new StringBuilder();
for (int i = 0; i < 5; i++) { sb.Append(generarCaracterAzar()); }
grafico.DrawString(sb.ToString(), new Font(fuenteTipo, fuenteTamaño), Brushes.White, 5, 10);
for (int i = 0; i < 10; i++)
{
grafico.DrawLine(new Pen(Brushes.Yellow, 2),
new Point(oAzar.Next(ancho), oAzar.Next(alto)),
new Point(oAzar.Next(ancho), oAzar.Next(alto)));
}
obeCaptcha.Codigo = sb.ToString();
byte[] captcha;
using (MemoryStream ms = new MemoryStream())
{
bmp.Save(ms, ImageFormat.Jpeg);
captcha = ms.ToArray();
}
obeCaptcha.Imagen = captcha;
return (obeCaptcha);
}
public string captcha()
{
string rpta = "";
beCaptcha obeCaptcha = Captcha.Crear();
if (obeCaptcha.Imagen != null && obeCaptcha.Imagen.Length > 0)
{
TempData["captcha"] = obeCaptcha.Codigo;
rpta = Convert.ToBase64String(obeCaptcha.Imagen);
}
return(rpta);
}
public static beCaptcha CrearCaptcha()
{
beCaptcha obeCaptcha = new beCaptcha();
StringBuilder sb = new StringBuilder();
for (int i = 0; i < 5; i++)
{
sb.Append(generarCaracterAzar());
}
obeCaptcha.Codigo = sb.ToString();
Rectangle rec = new Rectangle(0, 0, 200, 80);
Bitmap bmp = new Bitmap(200, 80);
Graphics grafico = Graphics.FromImage(bmp);
LinearGradientBrush degradadado = new LinearGradientBrush(rec, Color.Aqua, Color.Blue, LinearGradientMode.BackwardDiagonal);
grafico.FillRectangle(degradadado, rec);
grafico.DrawString(sb.ToString(), new Font("Arial", 40), Brushes.White, 10, 10);
using (MemoryStream ms = new MemoryStream())
{
bmp.Save(ms, ImageFormat.Png);
obeCaptcha.Imagen = ms.ToArray();
}
return(obeCaptcha);
}
