c# - Keep casing when serializing dictionaries -
i have web api project being configured this:
config.formatters.jsonformatter.serializersettings.contractresolver = new camelcasepropertynamescontractresolver(); however, want dictionary keys casing remain unchanged. there attribute in newtonsoft.json can use class denote want casing remain unchanged during serialization?
public class someviewmodel { public dictionary<string, string> data { get; set; } }
there not attribute this, can customizing resolver.
i see using camelcasepropertynamescontractresolver. if derive new resolver class , override createdictionarycontract() method, can provide substitute dictionarykeyresolver function not change key names.
here code need:
class camelcaseexceptdictionarykeysresolver : camelcasepropertynamescontractresolver { protected override jsondictionarycontract createdictionarycontract(type objecttype) { jsondictionarycontract contract = base.createdictionarycontract(objecttype); contract.dictionarykeyresolver = propertyname => propertyname; return contract; } } demo:
class program { static void main(string[] args) { foo foo = new foo { anintegerproperty = 42, htmlstring = "<html></html>", dictionary = new dictionary<string, string> { { "whizbang", "1" }, { "foo", "2" }, { "bar", "3" }, } }; jsonserializersettings settings = new jsonserializersettings { contractresolver = new camelcaseexceptdictionarykeysresolver(), formatting = formatting.indented }; string json = jsonconvert.serializeobject(foo, settings); console.writeline(json); } } class foo { public int anintegerproperty { get; set; } public string htmlstring { get; set; } public dictionary<string, string> dictionary { get; set; } } here output above. notice of class property names camel-cased, dictionary keys have retained original casing.
{ "anintegerproperty": 42, "htmlstring": "<html></html>", "dictionary": { "whizbang": "1", "foo": "2", "bar": "3" } } 
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