Ignore parsing errors during JSON.NET data parsing

Question

I have an object with predefined data structure:

public class A {     public string Id {get;set;}     public bool? Enabled {get;set;}     public int? Age {get;set;} } 

and JSON is supposed to be

{ "Id": "123", "Enabled": true, "Age": 23 } 

I want to handle JSON error in positive way, and whenever server returns unexpected values for defined data-types I want it to be ignore and default value is set (null).

Right now when JSON is partially invalid I'm getting JSON reader exception:

{ "Id": "123", "Enabled": "NotABoolValue", "Age": 23 } 

And I don't get any object at all. What I want is to get an object:

new A() { Id = "123", Enabled = null, Age = 23 } 

and parsing warning if possible. Is it possible to accomplish with JSON.NET?

Answer 1

To be able to handle deserialization errors, use the following code:

var a = JsonConvert.DeserializeObject<A>("-- JSON STRING --", new JsonSerializerSettings     {         Error = HandleDeserializationError     }); 

where HandleDeserializationError is the following method:

public void HandleDeserializationError(object sender, ErrorEventArgs errorArgs) {     var currentError = errorArgs.ErrorContext.Error.Message;     errorArgs.ErrorContext.Handled = true; } 

The HandleDeserializationError will be called as many times as there are errors in the json string. The properties that are causing the error will not be initialized.