ulong to byte[]

[Nadav]

How can a UInt64 be converted to a byte[] ????

 

[Jon Skeet [C# MVP]]

How can a UInt64 be converted to a byte[] ????

See BitConverter.GetBytes(ulong).

 

[Austin Ehlers]

How can a UInt64 be converted to a byte[] ????

See BitConverter.GetBytes(ulong).

And if speed is a factor:
unsafe static byte[] GetBytes(UInt64 value)
{
byte[] bytes = new byte[8];
fixed(byte* b = bytes)
*((UInt64*)b) = value;
return bytes;
}
The BitConverter version has a couple layers of indirection, so its
about 3 times slower (GetBytes(value)>GetUInt64Bytes(value)>internal
runtime call). It's strange, they sometimes do internal calls (for
Integral types) and sometimes they write their own (for floating-point
types).

Austin