How to Load a file which is saved using BinaryFormatter.

Question

In our Control, we have used BinaryFormatter serialization to Save and Load. But in Net 9 BinaryFormatter is completely removed. Due to that, we are planned to write our Serialization logic using DataContractSerialization.

But we need to deserialize the old files which are saved using BinaryFormatter. Is there any easy way to read those files?

We have used many Classes in our Control and Serialized all of them. Our Structure is basically like this.

Serializable Class ---> Properties of Custom Class Types ---> Properties of Custom Class Types ---> Properties with basic DataTypes.

Answer 1

Hi @Karkuvel Rajan Shanmugavel , Welcome to Microsoft Q&A,

The simpler approach is to create a compatibility item in the older .NET version to handle the conversion from BinaryFormatter to DataContractSerializer. Deserialize the BinaryFormatter data and reserialize it using DataContractSerializer. Then you can use the converted file in .NET 9.

Best Regards,

Jiale

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