Xamarin Forms - Observable Collection to CUSTOM JSON

Question

I have an observable collection that contains a list of products that is binded to ListView.

However I want to export this Observable Collection as a JSON file AND only specific entries so I can submit it through the API.

For example.

The full observable collection contains

• Product ID
• Product Name
• Product Price
• Product Qty

But I want to extract the JSON file to only:

• Product ID
• Product Qty

Here's my code:

public static ObservableCollection<FBProduct> fbproducts = new ObservableCollection<FBProduct>();

Here's my JSON deserialiser

shoppingcartjson = JsonConvert.SerializeObject(ShoppingCart.fbproducts);

How can I only extract only ProductID and ProductQTY from that ObservableCollection like so:

"line_items": [{"product_id":79631,"quantity":1}],

Answer 1

It's simple in your FBProduct class use the JsonIgnore attribute!

For instance:

 public class FBProduct
 {    
    [JsonIgnore]
    public double Name  { get; set; } 
    .
    .

Also, add the following using statement:

using Newtonsoft.Json;

Good luck!

Feel free to get back if you have questions.