C#•2y ago

❔ deserialize in csharp

is c# deserializer smart enough to deserialize the fields it only got or does your class have to match exactly the same ? Because I can sometimes get optional fields

8 Replies

ero•2y ago

Do you have any examples?

ogie1985OP•2y ago

basically my json sometimes does not contain the fields my class got is it still able to deserialize with some help of some attritbutes i don't know or is it just no tpossible to deserialize

ero•2y ago

Then those fields' values will be their default So if you have a string in your class, but that string isn't in the json, that string's value will be null after deserialization

ogie1985OP•2y ago

Yeah so I basically have a field which is a list of a class and that class contains a list of other classes but the base fields keep returning null because probably something inside that field of another class could not be matched?

MODiX•2y ago

Ero#1111

REPL Result: Success

var json = """
{
  "Foo": "Bar",
  "Baz": "Qux"
}
""";

var root = System.Text.Json.JsonSerializer.Deserialize<Root>(json);
Console.WriteLine(root.Baz);
Console.WriteLine(root.Quo is null);

class Root
{
public string Baz { get; set; }
public string Quo { get; set; }
}

var json = """
{
  "Foo": "Bar",
  "Baz": "Qux"
}
""";

var root = System.Text.Json.JsonSerializer.Deserialize<Root>(json);
Console.WriteLine(root.Baz);
Console.WriteLine(root.Quo is null);

class Root
{
public string Baz { get; set; }
public string Quo { get; set; }
}

Console Output

Qux
True

Qux
True

Compile: 656.307ms | Execution: 54.890ms | React with ❌ to remove this embed.

ero•2y ago

Hard to say without seeing all classes and the json

Angius•2y ago

Also, (de)serialization in C# generally doesn't support fields, only properties

Accord•2y ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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❔ deserialize in csharp