Empty elements in C# byte array

Question

Is there any method to empty an Byte array in C#?

Byte[] array = new Byte[64]; // contain all 0

// write some value into the array

// need empty array with all 0's

Solution 1

Byte[] array = new Byte[64];

Array.Clear(array, 0, array.Length);

Solution 2

Kindly use Array.Empty method

byte[] rawBytes = Array.Empty();

Solution 3

I tried endlessly to use Array.Clear() to clear a large byte[] that I have in my program. It would NEVER work. I do not know why. But I found a solution:

array = new byte[0];

Solution 4

Use the "clear" method on Array.

 Array.Clear(array , 0, array.Length);

Solution 5

for (int i = 0; i < array.Length; i++)
    array[i] = 0;

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Comments

[c00000fd]

It won't be optimized out of the Release build though, right? Eg: SecureZeroMemory vs ZeroMemory in Win32.

[sbr]

byte[] rawBytes = Array.Empty<byte>();

[MartinZ]

@c00000fd Please check this answer

[Zapnologica]

What is the performance difference between the two methods? When would I use one over the other?

[badjuice]

@sbr This has been helpful since I needed to pass it to a method in tests. Thanks!!