NullReferenceException when trying to set class property

Question

Basically I have 2 classes, \"Manifest\" and \"BrowserAction\", set out like this:

public class BrowserAction
{
    public string default_icon {get; set;}
    pu         


        

Answer 1

I think the Manifest.browser_action property returns null because you don't initialize it. Create an object before accessing its properties:

Manifest newManifest = new Manifest();
newManifest.browser_action = new BrowserAction();
newManifest.browser_action.default_popup = "popup.html";