C#: Convert Byte array into a float

Question

I have a byte array of size 4

byte[] source = new byte[4];

Now I wanted to convert this source into a 4-byte float value...

Can anyone tell me how to do this...

In what numeric format is the byte array? There are many different ways it might be interpreted. Do you have an example? For instance, the bytes of a 32-bit integer, least significant byte at byte 0, each byte little-endian. — Michael Petrotta
– Michael Petrotta, Commented Apr 12, 2010 at 3:03

Joel · Accepted Answer · 2010-04-12 03:08:12Z

75

Try

float myFloat = System.BitConverter.ToSingle(mybyteArray, startIndex);

answered Apr 12, 2010 at 3:08

Joel

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2 Comments

Suppose the bytearray came over a network. Is Endianness a concern here? If I wanted to write the sequence of bytes in C or C++ what should I do?

@mazzaa Yes it is a concern: in case System.BitConverter.IsLittleEndian does not agree the network source, you have to swap the 4 array bytes first