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小鹏 2010-03-09
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用随机函数多好呀 用随机函数多好呀
HatoLee 2010-03-09
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10张少了点，做个10W张~
whb147 2010-03-08
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最简单的办法就是做10张图,然后随机显示
wuyq11 2010-03-08
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public static String RndNum(int VcodeNum)
{
String str= "0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,W,X,Y,Z";
String[] arr= str.Split(',');
String Num = "";
Random random = new Random();
for (int i = 1; i <= str; i++)
{
int iNum = 0;
while ((iNum = Convert.ToInt32(arr.Length * random.NextDouble())) ==arr.Length )
{
iNum = Convert.ToInt32(arr.Length * random.NextDouble());
}
Num += arr[iNum];
}
return Num;
}
{
String str= "0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,W,X,Y,Z";
String[] arr= str.Split(',');
String Num = "";
Random random = new Random();
for (int i = 1; i <= str; i++)
{
int iNum = 0;
while ((iNum = Convert.ToInt32(arr.Length * random.NextDouble())) ==arr.Length )
{
iNum = Convert.ToInt32(arr.Length * random.NextDouble());
}
Num += arr[iNum];
}
return Num;
}
