How to pass arguments to a non-default constructor?

Question

I have approximately the following picture:

public class Foo
{
   public Foo(Bar bar, String x, String y)
   {
       this.Bar = bar;
       this.X = x;
             


        

Answer 1

If you have a constructor whose only parameters are your non-serialized values, create your instance first and then populate your object instead of deserializing. The JsonConvert class has a PopulateObject method, defined as follows:

public static void PopulateObject(
    string value,                      // JSON string
    object target)                     // already-created instance

If you have particular serialization settings, there's an overload that also includes a JsonSerializerSettings parameter.

Add a Foo constructor that has a single Bar parameter, you could do something like:

var bar = new Bar("Hello World");
var foo = new Foo(bar);
JsonConvert.PopulateObject(fooJsonString, foo);

You may need to adjust your class to use fields for mapping, or make adjustments to NHibernate to allow writing to private setters (use of a custom IProxyValidator class).