How to remove the null element form List

Question

Hi I am new to List handling. Please help me how to remove the null elements from the List.

Let me explain my question with an example. The below are the two class which I have.

public class Student
{
    public int id{get;set;}
    public string Name{get;set;}
    public Book book{get;set;}
}

public class Book
{
    public String BookName{get;set;}
    public int BookId{get;set;}
}

The below data i am binding to Student class. Which in result we get the List.

{
Student: {"id":1,"Name":"John","book":{"BookName":"Math","BookId":1}},
Student: {"id":3,"Name":"John","book":{"BookName":"Math","BookId":2}},
Student: {"id":4,"Name":"John","book":null},
}

Here I want to remove the fields, if it contains null value and send these data in json format.

Ultimately the required format is as below.

{
Student: {"id":1,"Name":"John","book":{"BookName":"Math","BookId":1}},
Student: {"id":3,"Name":"John","book":{"BookName":"Math","BookId":2}},
Student: {"id":4,"Name":"John"},
}

Please note that there should not any fields with null value.

What have you tried? You need to loop through the list and remove elements if they are null. — SANM2009, Feb 14 '18 at 11:02
The title is misleading, you want to avoid serializing a property that has a `null` value. — Lasse V. Karlsen, Feb 14 '18 at 11:03
As @LasseVågsætherKarlsen mentioned, please see following link: https://stackoverflow.com/a/6507965/4222487 — FaizanHussainRabbani, Feb 14 '18 at 11:08
@FaizanRabbani Question has already been duped to that question :) — DavidG, Feb 14 '18 at 11:13

How to remove the null element form List

0 Answers0