NGWS SDK Documentation  

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|= Operator

An expression using the |= assignment operator, such as

x |= y

is equivalent to

x = x | y

except that x is only evaluated once. The | operator performs a bitwise OR operation on integral operands and logical OR on bool operands.

The |= operator cannot be overloaded directly, but user-defined types can overload the | operator (see operator).

Example

using System;
class Test {
   public static void Main() {
      int a = 0x0c;
      a |= 0x06;
      Console.WriteLine("0x{0:x8}", a);
      bool b = true;
      b |= false;
      Console.WriteLine(b);
   }
}

Output

0x0000000e
True

See Also

C# Operators | CLR 7.13 Assignment operators