C#•2y ago

maui deserialize problem

I am having a problem when trying to deserialize api data

C#
  string content = await response.Content.ReadAsStringAsync();
                    Debug.WriteLine("content -->");
                    Debug.WriteLine(content);

                    mylists = JsonSerializer.Deserialize<List<Item>>(content, _jsonSerializerOptions);
                    Debug.WriteLine(mylists);

C#
  string content = await response.Content.ReadAsStringAsync();
                    Debug.WriteLine("content -->");
                    Debug.WriteLine(content);

                    mylists = JsonSerializer.Deserialize<List<Item>>(content, _jsonSerializerOptions);
                    Debug.WriteLine(mylists);

// this is what content says [{"id":1,"name":"Paprika chips","brand":"Lays","store":"Aldi"},{"id":2,"name":"producttest","brand":"brandttest","store":"Lidl"} so this one is correct but only the deserialize gives me some kind of problem and i do not understand why this is what mylists says System.Collections.Generic.List`1[Boodschappenlijst.Model.Item]

C#
   public class Item
    {
        public int Id { get; set; }
        public string name { get; set; }
        public string brand { get; set; }
        public string store { get; set; }
    }

C#
   public class Item
    {
        public int Id { get; set; }
        public string name { get; set; }
        public string brand { get; set; }
        public string store { get; set; }
    }

10 Replies

sibber•2y ago

JsonSerializer is case sensitive by default also .ToString() returns the type by default it doesnt return the contents of the list you can use string.Join for that or even better, use the debugger

skyferian•2y ago

SO bassicaly the I in Id and what do you mean with use the debugger

sibber•2y ago

put a breakpoint after deserializing and check the contents of list rather than logging

skyferian•2y ago

oh okey

sibber•2y ago

set this https://learn.microsoft.com/en-us/dotnet/api/system.text.json.jsonserializeroptions.propertynamingpolicy?view=net-7.0#system-text-json-jsonserializeroptions-propertynamingpolicy

JsonSerializerOptions.PropertyNamingPolicy Property (System.Text.Json)

Gets or sets a value that specifies the policy used to convert a property's name on an object to another format, such as camel-casing, or null to leave property names unchanged.

sibber•2y ago

so you can use PascalCase for the class properties in c#

skyferian•2y ago

i see now bassicaly i was just printing the type instead of the data

sibber•2y ago

yup also use PascalCase for propertie names :)

skyferian•2y ago

thank you for your help and yes i forgot you are right

sibber•2y ago

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maui deserialize problem