ASP.NET 5 (Core): How to store objects in session-cache (ISession)?

c# type-conversion bytearray asp.net-core session-state
evaenrique picture evaenrique · Mar 14, 2016 · Viewed 16.1k times · Source

I am writing an ASP.NET 5 MVC 6 (Core) application. Now I came to a point where I need to store (set and get) an object in the session-cache (ISession).

As you may know, the Set-method of ISession takes a byte-array and the Get-method returns one.

In a non-core-application I would use the BinaryFormatter to convert my object. But how can I do it in a core-application?

Answer

Henk Mollema picture Henk Mollema · Mar 14, 2016

I'd go with serializing the objects to JSON and use the extensions methods on ISession to save them as string's.

// Save
var key = "my-key";
var str = JsonConvert.SerializeObject(obj);
context.Session.SetString(key, str);

// Retrieve
var str = context.Session.GetString(key);
var obj = JsonConvert.DeserializeObject<MyType>(str);

The extension methods on ISession are defined in the Microsoft.AspNet(Core).Http namespace.

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