c# - How to serialize derived class to base class? -

i want serialize object , pass method parameter type parent of object.

for example, have classes.

public class base {     public string typename => gettype().name;     public string data => jsonconvert.serializeobject(this); }  public class derived : base {     public string name { get; set; }     public int data1 { get; set; }     public int data2 { get; set; } }  public class derived2 : base {     ... }  .... 

i wrote code follows,

var obj = new derived { name = "john", data1 = 2000, data2 = 1500 }; send(obj); 

and send(..) method is,

public void send(base info) {     // "info". } 

when instantiate variable obj, program has fallen infinite recursion because of "data" in base class.

how can change code?

infinite recursion caused data property, serialized - causes serialization of this , loop begins.

the best solution change property method, not serialized , better serve purpose. if dead set on property - try marking property http://www.newtonsoft.com/json/help/html/propertyjsonignore.htm cause ignored during serialization.