How to deserialze a binary file

Question

I'm having some trouble figuring out how to deserialize a binary file. I mostly can't figure out how to use the second argument of SerializationInfo.GetValue(); - if I just put a type keyword there, it's invalid, and if I use the TypeCode, it's invalid as well. This is my current attempt (obviously it doesn't build).

        protected GroupMgr(SerializationInfo info, StreamingContext context) {
        Groups = (Dictionary<int, Group>) info.GetValue("Groups", (Type) TypeCode.Object);
        Linker = (Dictionary<int, int>) info.GetValue("Linker", (Type) TypeCode.Object );
        }

James · Accepted Answer · 2009-11-25 00:26:02Z

3

The second argument in SerializationInfo.GetValue is the object type:

        protected GroupMgr(SerializationInfo info, StreamingContext context) {
            Groups = (Dictionary<int, Group>) info.GetValue("Groups", typeof(Dictionary<int, Group>));
            Linker = (Dictionary<int, int>) info.GetValue("Linker", typeof(Dictionary<int, int>));
            }

edited Nov 25, 2009 at 0:26

answered Nov 24, 2009 at 18:41

James

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jason · Accepted Answer · 2009-11-24 18:39:31Z

0

typeof(object)

or

instance.GetType()

where instance is an object. Of course, replace by the actual types in your case.

answered Nov 24, 2009 at 18:39

jason

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t0mm13b · Accepted Answer · 2009-11-24 18:46:07Z

0

Instantiate temporary variables:

Dictionary<int, Group> tmpDict = new Dictionary<int, Group>();
Dictionary<int, int> tmpLinker = new Dictionary<int, int>();

then in your lines below:

Groups = (Dictionary<int, Group>) info.GetValue("Groups", tmpDict.GetType());
Linker = (Dictionary<int, int>) info.GetValue("Linker", tmpLinker.GetType());

Hope this helps, Best regards, Tom.

answered Nov 24, 2009 at 18:46

t0mm13b

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