Biztalk Helper Class Question:
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Tell us why is it required that helper class/.net assembly to be marked serializable?

Answer:

When creating an assembly that will be used by BizTalk, it is appropriate to mark all classes as serializable. Since BizTalk is stateless and makes use of persistence points, which details are stored in BizTalk SQL Server databases by serializing all the data. Therefore non-serializable Classes or Types cannot be used directly in Orchestrations.

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Tell me why helper class/.Net assembly doesn't list in the Resources of Application, in spite of having reference to it and used in the application?Tell us is it possible to create a .Net class variable in BizTalk if property "Use default constructor" is set to false?