你能读/写一个字节/整数/的特定位吗？

Question

Coming from PLC I'm used to being able to write an individual bit. if I want to write to the third bit of a byte I do the following:

byte Var1;
Var1.X2 := true;

Is there a similar way in C# to easily write to a certain bit of a byte/int?

For now, I'm using the sum to get a similar result (bit1 -> +1, bit3 -> +4, ...), but being able to read/write to a specific byte would be easier.

Answer 1

You can use some bit arithmetic's via bitwise and shift operators :

byte b = 8;
string binary = Convert.ToString(b, 2);
Console.WriteLine(b);
b|= 1 << 1;
Console.WriteLine(Convert.ToString(b, 2));

Or using binary literals :

byte b = 8;
string binary = Convert.ToString(b, 2); 
Console.WriteLine(binary); // 1000
b |= 0b_0010;
Console.WriteLine(Convert.ToString(b, 2)); // 1010
b &= 0b_1101;
Console.WriteLine(Convert.ToString(b, 2)); // 1000