C#: How would you store arbitrary objects in an SQL Server?

Question

Lets say you have various objects of arbitrary type that you would like to store in a key+value type of table. Key could for example be an int, string or guid. What would th

Answer 1

When we have done this type of thing we have kept the data in a byte array while in C#, and stored it in a varbinary(max) column in SQL Server.

EDIT Based on comment

You could try having a property on your class that was the byte array of your value field.