/// <summary>
/// 显示验证码图片
/// </summary>
public void RenderGraphicImage(int number, VerifyWordOptions opt, bool simpleMode, out string words,
string contentType)
{
HttpContext context = HttpContext.Current;
byte[] data = GraphicDrawImage(number, opt, simpleMode, out words);
context.Response.BinaryWrite(data);
context.Response.ContentType = contentType ?? "Image/Jpeg";
}
/// <summary>
/// 显示验证码图片
/// </summary>
public byte[] GraphicDrawImage(int number, VerifyWordOptions opt, bool simpleMode, Font font, int imageHeight,
out string words)
{
HttpContext context = HttpContext.Current;
int[] verifyWords = new int[number];
Random rd = new Random();
TestCondition test;
int _tempInt;
switch (opt)
{
//纯数字
case VerifyWordOptions.Number:
test = (i, array) =>
{
if (i == 0)
{
return(false);
}
else if (i < _n_s || i > _n_e)
{
return(false);
}
else if (!AllowRepeat && Array.Exists(array, a => a == i))
{
return(false);
}
return(true);
};
for (int i = 0; i < number; i++)
{
while (verifyWords[i] == 0)
{
_tempInt = wordArray[rd.Next(wordLength)];
if (test(_tempInt, verifyWords))
{
verifyWords[i] = _tempInt;
}
}
}
break;
//纯字母
case VerifyWordOptions.Letter:
test = (i, array) =>
{
if (i == 0)
{
return(false);
}
else if (i < _ul_s || i > _ll_e || (i > _ul_e && i < _ll_s))
{
return(false);
}
else if (!AllowRepeat && Array.Exists(array, a => a == i))
{
return(false);
}
return(true);
};
for (int i = 0; i < number; i++)
{
while (verifyWords[i] == 0)
{
_tempInt = wordArray[rd.Next(wordLength)];
if (test(_tempInt, verifyWords))
{
verifyWords[i] = _tempInt;
}
}
}
break;
//字母和数字
case VerifyWordOptions.LetterAndNumber:
test = (i, array) =>
{
if (i == 0)
{
return(false);
}
else if (!Array.Exists(wordArray, a => a == i))
{
return(false);
}
else if (!AllowRepeat && Array.Exists(array, a => a == i))
{
return(false);
}
return(true);
};
for (int i = 0; i < number; i++)
{
while (verifyWords[i] == 0)
{
_tempInt = wordArray[rd.Next(wordLength)];
if (test(_tempInt, verifyWords))
{
verifyWords[i] = _tempInt;
}
}
}
break;
}
//转换成字母
StringBuilder sb = new StringBuilder();
foreach (int i in verifyWords)
{
sb.Append((char)i);
}
//context.Session["current_verifycode"] = sb.ToString();
words = sb.ToString();
//绘图
return(DrawingImage(verifyWords, simpleMode, font, imageHeight));
}
/// <summary>
/// 显示验证码图片
/// </summary>
public byte[] GraphicDrawImage(int number, VerifyWordOptions opt, bool simpleMode, out string words)
{
return(GraphicDrawImage(number, opt, simpleMode, GetDefaultFont(), 22, out words));
}
public char[] GenerateVerifyWords(int number, VerifyWordOptions opt)
{
int[] verifyWords = new int[number];
Random rd = new Random();
TestCondition test;
int _tempInt;
switch (opt)
{
//纯数字
case VerifyWordOptions.Number:
test = (i, array) =>
{
if (i == 0)
{
return(false);
}
else if (i < Ns || i > Ne)
{
return(false);
}
else if (!AllowRepeat && Array.Exists(array, a => a == i))
{
return(false);
}
return(true);
};
for (int i = 0; i < number; i++)
{
while (verifyWords[i] == 0)
{
_tempInt = WordArray[rd.Next(WordLength)];
if (test(_tempInt, verifyWords))
{
verifyWords[i] = _tempInt;
}
}
}
break;
//纯字母
case VerifyWordOptions.Letter:
test = (i, array) =>
{
if (i == 0)
{
return(false);
}
else if (i < UlS || i > LlE || (i > UlE && i < LlS))
{
return(false);
}
else if (!AllowRepeat && Array.Exists(array, a => a == i))
{
return(false);
}
return(true);
};
for (int i = 0; i < number; i++)
{
while (verifyWords[i] == 0)
{
_tempInt = WordArray[rd.Next(WordLength)];
if (test(_tempInt, verifyWords))
{
verifyWords[i] = _tempInt;
}
}
}
break;
//字母和数字
case VerifyWordOptions.LetterAndNumber:
test = (i, array) =>
{
if (i == 0)
{
return(false);
}
else if (!Array.Exists(WordArray, a => a == i))
{
return(false);
}
else if (!AllowRepeat && Array.Exists(array, a => a == i))
{
return(false);
}
return(true);
};
for (int i = 0; i < number; i++)
{
while (verifyWords[i] == 0)
{
_tempInt = WordArray[rd.Next(WordLength)];
if (test(_tempInt, verifyWords))
{
verifyWords[i] = _tempInt;
}
}
}
break;
}
//转换成字母
char[] charArray = new char[verifyWords.Length];
for (int i = 0; i < verifyWords.Length; i++)
{
charArray[i] = (char)verifyWords[i];
}
//context.Session["current_verifycode"] = sb.ToString();
return(charArray);
}
/// <summary>
/// 显示验证码图片
/// </summary>
public void RenderGraphicImage(int number, VerifyWordOptions opt, bool simpleMode, out string words,
string contentType)
{
HttpContext context = HttpContext.Current;
byte[] data = GraphicDrawImage(number, opt, simpleMode, out words);
context.Response.BinaryWrite(data);
context.Response.ContentType = contentType ?? "Image/Jpeg";
}
/// <summary>
/// 显示验证码图片
/// </summary>
public byte[] GraphicDrawImage(int number, VerifyWordOptions opt, bool simpleMode, Font font, int imageHeight,
out string words)
{
HttpContext context = HttpContext.Current;
int[] verifyWords = new int[number];
Random rd = new Random();
TestCondition test;
int _tempInt;
switch (opt)
{
//纯数字
case VerifyWordOptions.Number:
test = (i, array) =>
{
if (i == 0) return false;
else if (i < _n_s || i > _n_e) return false;
else if (!AllowRepeat && Array.Exists(array, a => a == i)) return false;
return true;
};
for (int i = 0; i < number; i++)
{
while (verifyWords[i] == 0)
{
_tempInt = wordArray[rd.Next(wordLength)];
if (test(_tempInt, verifyWords))
{
verifyWords[i] = _tempInt;
}
}
}
break;
//纯字母
case VerifyWordOptions.Letter:
test = (i, array) =>
{
if (i == 0) return false;
else if (i < _ul_s || i > _ll_e || (i > _ul_e && i < _ll_s)) return false;
else if (!AllowRepeat && Array.Exists(array, a => a == i)) return false;
return true;
};
for (int i = 0; i < number; i++)
{
while (verifyWords[i] == 0)
{
_tempInt = wordArray[rd.Next(wordLength)];
if (test(_tempInt, verifyWords))
{
verifyWords[i] = _tempInt;
}
}
}
break;
//字母和数字
case VerifyWordOptions.LetterAndNumber:
test = (i, array) =>
{
if (i == 0) return false;
else if (!Array.Exists(wordArray, a => a == i)) return false;
else if (!AllowRepeat && Array.Exists(array, a => a == i)) return false;
return true;
};
for (int i = 0; i < number; i++)
{
while (verifyWords[i] == 0)
{
_tempInt = wordArray[rd.Next(wordLength)];
if (test(_tempInt, verifyWords))
{
verifyWords[i] = _tempInt;
}
}
}
break;
}
//转换成字母
StringBuilder sb = new StringBuilder();
foreach (int i in verifyWords)
{
sb.Append((char) i);
}
//context.Session["current_verifycode"] = sb.ToString();
words = sb.ToString();
//绘图
return DrawingImage(verifyWords, simpleMode, font, imageHeight);
}
/// <summary>
/// 显示验证码图片
/// </summary>
public byte[] GraphicDrawImage(int number, VerifyWordOptions opt, bool simpleMode, out string words)
{
return GraphicDrawImage(number, opt, simpleMode, GetDefaultFont(), 22, out words);
}
