Sometimes it is required to make a certain bit Zero in an Integer value. For example,
Dim f As FontStyle
f = FontStyle.Bold Or FontStyle.Italic
So in the above Code we have put Bold and Italic both, now suppose we want to remove the Bold then we will use XOR Bitwise Operator as,
f = f XOR FontStyle.Bold
The Bold bit will be set to zero.
0 XOR 0 = 0
0 XOR 1 = 1
1 XOR 0 = 1
1 XOR 1 = 0
Note that XOR is actually reverting the bit i.e. 0 (Zero) to 1 and 1 to 0 (Zero). Therefore use XOR if you are sure that the bit we are going to make 0 (zero) is currently 1, otherwise see the following article.
How to check a Bit whether it is 1 or 0 (zero) in an Integer (Bitwise Operations)
How to add/remove Attribute from File (Bitwise Operation)