Passing values from page to page
When navigating from one page to another, you’ll often want to pass in a value. There are a few ways to do this; here are the two most common:
- Using the
url (?)syntax as you might with a URL to navigate to a page on the web - Using navigation parameters with a dictionary
Passing values with the url (?) syntax
Let’s return to the Buddies page. Right now, the Button has a GoToDetailsCommand command. But the Details page needs to know which Buddy to show details about.
We’ll modify RelayCommand in ViewModel to pass in BuddyId. To make this work, we need a Buddy object (which will have the Id). However, Buddy is just one of the types of users of this program, so let’s start by defining the User type:
[ObservableObject]
public partial class User
{
[ObservableProperty]
private string name;
[ObservableProperty] [1]
...
