If you’re using a SearchBar control, you’ll need to pass the text that’s been entered. Instead of using a property you can use a Binding “trick” instead. You’ll notice that SearchCommandParameter is set to bind to the text property of the SearchBar itself

Still learning Xamarin. I have built a login page, validation, called a web api to login and stored credentials after the user has logged in. I now wanted to show a loading graphic whilst the web api is being hit. Xamarin has a built in control called ActivityIndicator. I defined a new property in my ViewModel to Read more about Xamarin – Display a loading graphic when performing an async operation[…]

In my earlier post validate entries using behaviours I showed how I used Xamarin behaviours to show validation messages to the user. This is good, but it didn’t prevent the button from being pressed/submitted. Here’s how I achieved this. In my ViewModel add properties for the validators I use in the view These need to be Read more about Xamarin disable button & validating entries with behaviours[…]

I had created a login form using Xamarin Forms this makes a http post to a REST api. Returning the users ID. Logging in can be a pain, so I was looking for a way to securely store the login credentials once the user has been authenticated. Xamarin.Auth has a feature to allow this. It Read more about Xamarin store login credentials[…]

This is based on a post here https://blog.xamarin.com/behaviors-in-xamarin-forms/ which is a little incomplete and had a couple of errors and some omissions. The following example shows how to validate that an email address is valid Create a new class that inherits from Behavior<T>. Make sure you don’t just inherit from Behavior as the code sample shows. Read more about Validate Entries using behaviours[…]