CODEWITHSUNDEEP
xamarinxamarin.forms
casillas
casillas

Reputation: 16813

Implementation of OnSearchBarButtonPressed in the ListView in Xamarin Form

Is there a way to search a name on the table(Listview) in Xamarin Form without using any MonoTouch components - for crossplatform?

I have a number of names and populated on listview and what I want is that once user types the name and listview would be sorted and it should bring to matched name. I have added searchbar at the top of the listview.

I do not know how to implement OnSearchBarButtonPressed method. I believe that I should not reinvent the wheel again.

           SearchBar searchBar = new SearchBar
            {
                Placeholder = "Search Employee Name",
            };
            searchBar.SearchButtonPressed += OnSearchBarButtonPressed;

            Padding = new Thickness (10, 20, 10, 10);
            Content = new StackLayout () {
                Children={searchBar,listView}

            };

Upvotes: 0

Views: 1142

Answers (1)

Pete
Pete

Reputation: 4746

In relation to your other posting here your ListView ItemsSource is a collection of objects.

The ListView control has no way of knowing about your model and wouldn't be able to any filtering by itself.

There appears to be nothing inbuilt into the ListView that would allow you to specify some Predicate to help with this task anyway.

You should therefore do the filtering in the SearchBar.SearchButtonPressed and then re-assign the ListView ItemsSource to reflect the newly filtered ItemsSource you want to show to the end-user. Your filtering logic could then be anything you wanted as your be able to customize this to even filter over many fields etc.

The SearchBar.SearchButtonPressed is just an event which you assign an EventHandler, like you are already doing. You just need to fill in the filtering logic and update the ListView accordingly.

Upvotes: 2

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