Bug 46971 - Exception when using linq to fetch AddressBook
Summary: Exception when using linq to fetch AddressBook
Alias: None
Product: Forms
Classification: Xamarin
Component: Android ()
Version: 2.3.2
Hardware: PC Windows
: --- normal
Target Milestone: ---
Assignee: Bugzilla
Depends on:
Reported: 2016-11-15 03:37 UTC by Squall Leonhart
Modified: 2017-06-19 16:37 UTC (History)
4 users (show)

Is this bug a regression?: ---
Last known good build:

This is the test project (82.23 KB, application/zip)
2016-11-17 04:23 UTC, Squall Leonhart

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Description Squall Leonhart 2016-11-15 03:37:40 UTC
I'm using Xamarin.Mobile to get the addressbook.

I created an Interface and implement following method:

private IEnumerable<Contact> GetContacts()
	return _addressbook.Select(p => new Contact
		Name = p.DisplayName,
		PhoneNumber = p.Phones.Select(q => q.Number.Replace("-", "").Replace("+84", "0").Trim())

It's throw following exception at runtime: System.ArgumentException: Unhandled expression type: 'MemberInit'

If i change to foreach, it's work:

private IEnumerable<Contact> GetContacts()
	foreach (var p in _addressbook)
		var contact = new Contact
			Name = p.DisplayName,
			PhoneNumber = p.Phones.Select(q => q.Number.Replace("-", "").Replace("+84", "0").Trim())
		yield return contact;
Comment 1 adrianknight89 2016-11-15 17:39:48 UTC
Can you attach a repro instead?
Comment 2 Squall Leonhart 2016-11-17 04:23:24 UTC
Created attachment 18494 [details]
This is the test project

I attach the test project.

Or you can clone the following repository:
Comment 3 E.Z. Hart [MSFT] 2017-06-19 16:37:39 UTC
This is an issue with Xamarin.Mobile; it's not a Xamarin.Forms bug. You should open an issue at https://github.com/xamarin/Xamarin.Mobile/issues