Ok just I am telling you the short trick to find out the binery number of any degit

lets start from the heigher amount you have:

suppose it you want to find out the binery of 165

128 64 32 16 8 4 2 1

write the above series as I have written in decreasing order, it will be continue untill you don't find your binery,

start counting now how.......

 1    0   1   0  0 1 0 1   

128 64 32 16 8 4 2 1 

now add the the number below the degit one

128+32+4+1=165 (10100101)

The remaining number will be called the (0)

Hope you understand it.

Thanks

http://www.html5andcss3.org

如果仅是1、2、4、8、16、32这种2的幂级数的话。可以按下面的公式来算：

其中，n就是你输入的数。

是把二进制的字符串转换成数字吗？Convert类里面就有专门的函数干这个的，如下就是一个例子。　

　 Convert.ToInt32("00001000", 2);