Publicly declare Contacts

Question

Hi,

How can I publicly declare the following:

var contacts = await Microsoft.Maui.ApplicationModel.Communication.Contacts.GetAllAsync();

something like this:

Contacts contacts;

contacts = await Microsoft.Maui.ApplicationModel.Communication.Contacts.GetAllAsync();

Thanks,

Jassim

Answer 1

Hello,
The returned object is of type IEnumerable<Contact>, you can determine the type and declare it publicly. See IEnumerable<T> Interface (System.Collections.Generic) | Microsoft Learn

In addition, you can convert the type if you would like to. For more details, please refer to ObservableCollection<T> Class (System.Collections.ObjectModel) | Microsoft Learn

IEnumerable<Contact> contacts;
ObservableCollection<Contact> ContactsCollection;// I declare two fields


private async void OnCounterClicked(object sender, EventArgs e)
      {
        contacts  = await Microsoft.Maui.ApplicationModel.Communication.Contacts.GetAllAsync();// this one is type of IEnumerable<Contact>
       //var contacts = await Microsoft.Maui.ApplicationModel.Communication.Contacts.GetAllAsync();
       // ContactsCollection = new ObservableCollection<Contact>(contacts); //
this one is type of ObservableCollection<Contact>
      }

Best Regards,

Wenyan Zhang

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