Question

How to find out is bytes array has any data or it is newly created bytes array?

var Buffer = new byte[1000];
//How to find out is Buffer is empty or not?

Answer 1

I assume by ’empty’ you mean containing default values for every byte element, if this isn’t what you mean, look at @sehe’s answer.

How about using LINQ to check whether all elements have the default value for the type:

var Empty = Buffer.All(B => B == default(Byte));