CODEWITHSUNDEEP
xamarinxamarin.forms
Le Anh Tai
Le Anh Tai

Reputation: 61

How to know which row tapped or selected in ListView Xamarin Form

I am new to Xamarin. I have a question about ListView in Xamarin form. How do I know which row or index everytime I tab (or select) in the listView? Below is the code I tried, but e.SelectedItem does not show anything. Thanks for helping.

listView.ItemSelected += async (sender, e) => {

    if (e.SelectedItem == null) return; // don't do anything if we just de-selected the row

    await DisplayAlert("Tapped", e.SelectedItem + " row was selected", "OK");

    ((ListView)sender).SelectedItem = null; // de-select the row
};

Upvotes: 4

Views: 12648

Answers (3)

Richard Pike
Richard Pike

Reputation: 679

A simpler and quicker solution for this would be to use IndexOf on the ItemSource - in your case "people"

int index = people.IndexOf(person);

this would remove your for loop

Upvotes: 0

Rohit Vipin Mathews
Rohit Vipin Mathews

Reputation: 11787

I have a list view and on click I have to go to the details view page. The following is the code that I use for the same. 

listView.ItemSelected += async (sender, e) =>
            {
                if (e.SelectedItem == null)
                {
                    // don't do anything if we just de-selected the row
                    return;
                }
                else
                {
                    Resource resource = e.SelectedItem as Resource;
                    listView.SelectedItem = null;
                    await Navigation.PushAsync(new ResourceDetails(resource));
                }
            };

In your case I would modify the code as follows : 

listView.ItemSelected += async (sender, e) => {

    if (e.SelectedItem == null) return; // don't do anything if we just de-selected the row

    await DisplayAlert("Tapped", (e.SelectedItem as YourDataType).Name + " row was selected", "OK");

    ((ListView)sender).SelectedItem = null; // de-select the row
};

Upvotes: 6

Le Anh Tai
Le Anh Tai

Reputation: 61

I found the solution how to find the index of the row. :)

listView.ItemSelected += async (sender, e) => {
                if (e.SelectedItem == null) return; // don't do anything if we just de-selected the row
                Person person = (Person)e.SelectedItem;
                int index = -1;

                for(int i = 0; i < people.Count; i++)
                {
                    if(people[i] == person)
                    {
                        index = i;
                        break;
                    }
                }

                await DisplayAlert("Tapped", person.Name + " row was selected " + index.ToString(), "OK");

                ((ListView)sender).SelectedItem = null; // de-select the row
            };

Upvotes: 0

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