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生成n位随机验证码,代码如下:
public static string RandomCode(int n)
{
int number;
char code;
string StrCode = String.Empty;
Random random = new Random();
for (int i = 0; i < n; i++)
{
number = random.Next();
if (number % 2 == 0)
code = (char)('0' + (char)(number % 10));
else
code = (char)('A' + (char)(number % 26));
StrCode += code.ToString();
}
return StrCode;
}