Byte[] to int[] without trimming 0x00

I have a byte array containing value like this: byte[] data={0x04,0x00};

I need to convert it to a string a print it as str_data=0x400

But when i convert this to string the data is printed as 40 where last 0x00 is considered as only 0.

I am new to C# and I am struggling to solve this. Please help.