十六進位轉換

// Should be "7B"
String str = 123.ToString("X");

// Should be 291
int num = int.Parse("123", System.Globalization.NumberStyles.HexNumber);

//or
string hex = "ABC";
int myInt = Convert.ToInt32(hex, 16);

//VB
int x = &HFF

//C#
int x = 0xFF;