MemoryStream to sbyte[]

Question

I'm still trying to add a jpeg image to a person in Open LDAP, using Novell's c# libraries:

Openldap: Add jpegPhoto to inetOrgPerson

There is a constructor for Novell.Directory.Ldap.LdapAttribute the with the following signature:

public LdapAttribute(string attrName, sbyte[] attrBytes)

So, I plan to use this one. But, how to convert a jpeg image from a MemoreyStream to sbyte[]?

MemoryStream.ToArray() 

method returns byte[] and I don't know how to do it.

Answer 1

您可以像这样转换数组：

Array.ConvertAll(bytes, b => (sbyte)b)

Answer 2

On the CLR you can constant-time convert a byte[] to an sbyte[] . See my previous answer on this little-known trick.

(sbyte[])(object)MemoryStream.ToArray(); //compiles and runs