static string IntToHex(int c1, int c2, int c3) { return new string(new char[] { '%', intToHex[c1>>4], intToHex[c1&0x0f], '%', intToHex[c2>>4], intToHex[c2&0x0f], '%', intToHex[c3>>4], intToHex[c3&0x0f], }); }