JSON Deserialization Type is not supported for deserialization of an array

c# json wcf serialization deserialization

The problem is that you're telling the serializer that it's just a single Workout, not a list/array of them. This works:

var blah = s.Deserialize<List<Workout>>(jstr);

This isn't directly related to your question, but if at all possible, I'd recommend that you use Json.NET instead of JavaScriptSerializer.

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