这个函数怎么转换为C#
函数如下:
function Encrypt(s)
{
var k, tmp, tmpstr;
var key_S = "43,54,75,2,687,43,65,43,4,23,34,65,43,8,33,33,54,3";
key = key_S.split(",");
tmpstr = "";
k = 0;
for(var j = 0; j < s.length; j++){
tmp = (s.charAt(j).charCodeAt() ^ key[k].valueOf(Number));
s_hex = tmp.toString(16);
while (s_hex.length<2){
s_hex = '0' + s_hex;
}
tmpstr = tmpstr + s_hex;
k++;
}
return tmpstr.toUpperCase();
}