System.Text.Json Deserialize empty strings to null

Question

User-401080925 posted

Hi

using Blazor 3.2,is there any option not to convert empty strings to null on System.Text.Json Deserialize?

Answer 1

User475983607 posted

Hi

using Blazor 3.2,is there any option not to convert empty strings to null on System.Text.Json Deserialize?

Empty string are not converted to null.  Null is converted to null.

    public class JsonModel
    {
        public int Id { get; set; }
        public string Name { get; set; }
    }

        static async Task Main (string[] args)
        {
            JsonModel model = new JsonModel() { Id = 1, Name = "" };
            string json = JsonSerializer.Serialize(model);
            Console.WriteLine(json);

            model.Name = null;
            json = JsonSerializer.Serialize(model);
            Console.WriteLine(json);
        }

Results

{"Id":1,"Name":""}
{"Id":1,"Name":null}

Answer 2

User-401080925 posted

indeed,only in debugger it is shown as null,but in Console.WriteLine it is ok

thanks

Answer 3

User475983607 posted

indeed,only in debugger it is shown as null,but in Console.WriteLine it is ok

Null and empty string are not the same types.  The serializer does NOT convert an empty string to null.  You must be missing something.  Share code that reproduces this issue so we can figure out what's going on.

Answer 4

User-401080925 posted

It's ok,only Blazor client-side debugging with Chrome shows null

post can be deleted

thanks