CODEWITHSUNDEEP
c#.netjson.net
karl.r
karl.r

Reputation: 971

Deserialize JSON, sometimes value is an array, sometimes "" (blank string)

I am trying to deserialize a field:

"presenters":[{...},{...}]

but some of the rows come back with only:

"presenters":""

When the serializer gets to the row with that empty string I get:

Error converting value "" to type 'System.Collections.Generic.List`1[DataPrototype.Model.Presenter]'.

Am I right in thinking that I need a JsonConverter that will change the empty string into an empty List?

Upvotes: 1

Views: 3925

Answers (1)

James Newton-King
James Newton-King

Reputation: 49072

Yes.

Inside the JsonConverter test the token type from the JsonReader.

If it is a string then return null.

If it is the start of an array then use the JsonReader and JsonSerializer passed to the converter method to deserialize the array.

Upvotes: 4

Related Questions