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Code: Select all

class  DictionaryTest
{
public Dictionary Fields { get; set; }
public DictionaryTest()
{
Fields = new Dictionary(StringComparer.OrdinalIgnoreCase);
}
}

Code: Select all

var points = new Dictionary
{
{ "James", "9001" },
{ "Jo", "3474" },
{ "Jess", "11926" }
};

var testObj = new DictionaryTest{Fields = points};
var dictionaryJsonText =  JsonSerializer.Deserialize(JsonSerializer.Serialize(testObj, options:new JsonSerializerOptions()
{
IgnoreNullValues = true,
WriteIndented = false,
PropertyNamingPolicy = null,
Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping,
DictionaryKeyPolicy = JsonNamingPolicy.CamelCase,
PropertyNameCaseInsensitive = true
}));

string nameJsonText = "", nameJsonText2="";
//Because of the naming policy specified above, the keys are camelCase.
//So keys are james, jo and jess
//I expect to be able to access either james, or James as keys.
dictionaryJsonText?.Fields.TryGetValue("James", out nameJsonText);
dictionaryJsonText?.Fields.TryGetValue("james", out nameJsonText2);
Console.WriteLine($"Name with system.text.json is:  {nameJsonText}");
Console.WriteLine($"Name with system.text.json is:  {nameJsonText2}");
Console.WriteLine($"Comparer is {dictionaryJsonText?.Fields.Comparer}");