/// <summary>
/// Initializes a new instance of the <see cref="T:Common.Utility.PictureCAPTCHA"/> class with number list;
/// </summary>
/// <param name="Length">Length.</param>
public PictureCAPTCHA(int Length)
{
HttpContext.Current.Response.Expires = 0;
HttpContext.Current.Response.Buffer = true;
HttpContext.Current.Response.ExpiresAbsolute = DateTime.Now.AddSeconds(-1);
HttpContext.Current.Response.AddHeader("pragma", "no-cache");
HttpContext.Current.Response.CacheControl = "no-cache";
LetterCount = Length;
Text = StringCAPTCHA.Number(LetterCount);
CreateImage();
}
private void InitText()
{
switch (Type)
{
case 0: Text = StringCAPTCHA.Number(LetterCount); break;
case 1: Text = StringCAPTCHA.Char(LetterCount); break;
case 2: Text = StringCAPTCHA.Mixed(LetterCount); break;
default:
break;
}
}