c# - Deserialize a json serialized CookieCollection -


in code have json serialize cookiecollection object , pass string, achieve this:

var json = newtonsoft.json.jsonconvert.serializeobject(resp.cookies);

resulting following json

[  {   "comment": "",   "commenturi": null,   "httponly": false,   "discard": false,   "domain": "www.site.com",   "expired": true,   "expires": "1970-01-01t03:30:01+03:30",   "name": "version",   "path": "/",   "port": "",   "secure": false,   "timestamp": "2015-06-01t12:19:46.3293119+04:30",   "value": "deleted",   "version": 0  },  {   "comment": "",   "commenturi": null,   "httponly": false,   "discard": false,   "domain": ".site.com",   "expired": false,   "expires": "2015-07-31t12:19:48+04:30",   "name": "ads_7",   "path": "/",   "port": "",   "secure": false,   "timestamp": "2015-06-01t12:19:46.3449217+04:30",   "value": "0",   "version": 0  } ]

to deserialize json wanted this:

var cookies = newtonsoft.json.jsonconvert.deserializeobject<cookiecollection>(json);

but fails , raise jsonserializationexception saying

cannot create , populate list type system.net.cookiecollection. path '', line 1, position 1.

so changed code following , working now

var tmpcookies = newtonsoft.json.jsonconvert.deserializeobject<list<cookie>>(json); cookiecollection cookies = new cookiecollection(); tmpcookies.foreach(cookies.add);

i wondering why first attempt fails? , if there nicer way of doing it.

json.net doesn't support deserializing non-generic ienumerables.

cookiecollection implements ienumerable , icollection, not ienumerable<cookie>. when json.net goes deserialize collection, doesn't know deserialize individual items in ienumerable into.

contrast ilist<cookie> has generic type parameter. json.net can determine type each element in resulting list should be.

you fix using workaround discussed in comments, or write custom converter.


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