public string CreateVerifyCode(int codeLen)
{
if (codeLen == 0)
{
codeLen = Length;
}
string[] arr = CodeSerial.Split(',');
string code = "";
int randValue = -1;
//Random rand = new Random(unchecked((int)DateTime.Now.Ticks));
Random rand = new Random(Guid.NewGuid().GetHashCode());
for (int i = 0; i < codeLen; i++)
{
//System.Threading.Thread.Sleep(i * i + 20);
//rand = new Random(unchecked((int)DateTime.Now.Ticks) + i * i * i * i * i);
//randValue = rand.Next(0, arr.Length);
randValue = rand.Next(0, 35);
code += arr[randValue];
}
return(code);
}
/// <summary>
/// 产生随机的字符验证码，包含数字和字母
/// </summary>
/// <param name="length"></param>
/// <returns></returns>
public string CreateVerifyCode(int length = 4)
{
var lCodeLen = (length >= 4) ? length : MinLength;
var lCodeArray = CodeSerial.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
var lCode = string.Empty;
var lRandom = new Random(unchecked ((int)DateTime.Now.Ticks));
for (var i = 0; i < lCodeLen; i++)
{
var lRandValue = lRandom.Next(0, lCodeArray.Length - 1);
lCode = string.Concat(lCode, lCodeArray[lRandValue]);
}
return(lCode);
}
private void GenerateVerifyCode()
{
var arr = CodeSerial.Split(',');
var code = string.Empty;
int randValue = -1;
var rand = new Random(unchecked ((int)DateTime.Now.Ticks));
for (int i = 0; i < Length; i++)
{
randValue = rand.Next(0, arr.Length - 1);
code += arr[randValue];
}
this.CaptchaCode = code;
}
/// <summary>
/// 生成随机字符码
/// </summary>
/// <param name="codeLen">长度</param>
/// <returns></returns>
public string CreateVerifyCode(int codeLen)
{
if (codeLen == 0)
{
codeLen = Length;
}
string[] arr = CodeSerial.Split(',');
string code = "";
int randValue = -1;
Random rand = new Random(unchecked ((int)DateTime.Now.Ticks));
for (int i = 0; i < codeLen; i++)
{
randValue = rand.Next(0, arr.Length - 1);
code += arr[randValue];
}
return(code);
}
