Bug 42446 - DataContractSerializer throws NotImplemented exception
Summary: DataContractSerializer throws NotImplemented exception
Status: NEW
Alias: None
Product: Class Libraries
Classification: Mono
Component: System ()
Version: 4.4.0 (C7)
Hardware: PC Mac OS
: --- normal
Target Milestone: Untriaged
Assignee: Bugzilla
Depends on:
Reported: 2016-07-08 23:46 UTC by Casper Bollen
Modified: 2016-07-08 23:46 UTC (History)
1 user (show)

Is this bug a regression?: ---
Last known good build:

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Description Casper Bollen 2016-07-08 23:46:25 UTC
This code runs without problem on .net, but crashes when using mono 4.4.1

#r "System.dll"
#r "System.Net.Http.dll"
#r "System.Runtime.Serialization"

open System
open System.Net.Http
open System.IO
open System.Text
open System.Runtime.Serialization
open System.Runtime.Serialization.Json

type Request =
        [<field: DataMember(Name = "act")>]
        Action: string
        [<field: DataMember(Name = "qry")>]
        Query: obj

let fromJson<'T> (json: string) =
    let dcs = DataContractJsonSerializer(typeof<'T>)
    use ms = new MemoryStream(ASCIIEncoding.ASCII.GetBytes(json))
    (new StreamWriter(ms)).Write(json)
    dcs.ReadObject(ms) :?> 'T

let toJson o =
    let dcs = DataContractJsonSerializer(o.GetType())
    use ms = new MemoryStream()
    dcs.WriteObject(ms, o) 
    ms.Position <- 0L
    (new StreamReader(ms)).ReadToEnd()

{ Action = "Test"; Query = new Object() }
|> toJson
|> printfn "%s"

This is a minimal failing test, just throw it to the fsharpi and compare it with the fsi result.