JSON.Net - Deserialisation - underscore in property value turns into space

Question

I have a POCO object like this -

class User
{
     string FullName { get; set;}
     DateTime DOJ { get; set;}
     string UserName { get; set;}
}

I have a WebAPI that sends following JSON to update user

PUT /user/{user-id}
{
    "FullName ": "My Name",
    "DOJ": "01-05-2018",
    "UserName": "My_user_Name"
}

// Deserialize in C# code
var user = JsonConvert.DeserializeObject<User>(Above-Json-String);

When i deserialize this json using JSON.net apis, value for "user.UserName" is "My user Name", the underscores got converted into space.

Any solution to preserve underscores in the property value?

I just tried deserializing from a string constant and the underscores were preserved. So I don't think it's the deserialization that does it. Could it be something in the transport layer that changes them to spaces? Quick test: See if your JSON string has the underscores before deserialization. — Hans Kilian
– Hans Kilian, Commented Jan 5, 2018 at 7:04
I think stackoverflow.com/questions/47948266/… will help you — RICKY KUMAR
– RICKY KUMAR, Commented Jan 5, 2018 at 8:53
@Hans - Thanks for your reply. I tried your test and i can see underscores before deserialization. So its passing through transport layer. BTW, what version of library are you using? i am using "8.0.3.19514" and i cant change to higher versions because of business reasons. — smhetre
– smhetre, Commented Jan 5, 2018 at 9:39

Kishor Velayutham · Accepted Answer · 2018-01-05 06:53:18Z

3

Jsonproperty might solve your issue stated.

Use the JsonProperty attribute to indicate the name in the JSON.

[JsonProperty(PropertyName = "binding type")]
string FullName { get; set;}

answered Jan 5, 2018 at 6:53

Kishor Velayutham

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