Bug 23796 - “Nullable object must have a value” error when null is returned
Summary: “Nullable object must have a value” error when null is returned
Status: RESOLVED DUPLICATE of bug 23676
Alias: None
Product: iOS
Classification: Xamarin
Component: General ()
Version: XI 8.2.0
Hardware: Macintosh Mac OS
: Normal normal
Target Milestone: Untriaged
Assignee: Bugzilla
URL:
Depends on:
Blocks:
 
Reported: 2014-10-13 18:02 UTC by Kent Green [MSFT]
Modified: 2014-10-14 07:39 UTC (History)
6 users (show)

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


Attachments
Xamarin Studio Log files from when the error occurred (26.04 KB, application/zip)
2014-10-13 18:07 UTC, Kent Green [MSFT]
Details


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Status:
RESOLVED DUPLICATE of bug 23676

Description Kent Green [MSFT] 2014-10-13 18:02:55 UTC
Created attachment 8400 [details]
Sample to reproduce the bug

---Overview---
From priority case: 
https://xamarin.desk.com/agent/case/93212

The customer reported the "Nullable object must have a value" error is occurring in Xamarin Studio when setting a value to null. The same code builds without throwing this or any other exceptions in Visual Studio. 

---Steps to reproduce---
1) Build and deploy the app in Xamarin Studio (Mac) to generate the exception. The same code builds without the exception in Visual Studio.
- In both cases, I used the iPhone 5s / iOS 8 simulator.


---Build information (From my build reproducing the error)---
=== Xamarin Studio ===

Version 5.5 (build 227)
Installation UUID: 8ef63a7c-1b18-40de-a334-7f78777fcb55
Runtime:
	Mono 3.10.0 ((detached/47db868)
	GTK+ 2.24.23 (Raleigh theme)

	Package version: 310000019

=== Apple Developer Tools ===

Xcode 6.0.1 (6528)
Build 6A317

=== Xamarin.iOS ===

Version: 8.2.0.193 (Business Edition)
Hash: 959c1e4
Branch: 
Build date: 2014-10-03 00:25:37-0400

=== Xamarin.Android ===

Version: 4.18.0 (Business Edition)
Android SDK: /Users/kentgreen/Library/Developer/Xamarin/android-sdk-macosx
	Supported Android versions:
		2.1   (API level 7)
		2.2   (API level 8)
		2.3   (API level 10)
		3.1   (API level 12)
		4.0   (API level 14)
		4.0.3 (API level 15)
		4.1   (API level 16)
		4.2   (API level 17)
		4.3   (API level 18)
		4.4   (API level 19)
Java SDK: /usr
java version "1.6.0_65"
Java(TM) SE Runtime Environment (build 1.6.0_65-b14-466.1-11M4716)
Java HotSpot(TM) 64-Bit Server VM (build 20.65-b04-466.1, mixed mode)

=== Xamarin.Mac ===

Version: 1.10.0.13 (Business Edition)

=== Build Information ===

Release ID: 505000227
Git revision: 7b721eeec7a2fa4c4f4de0ecd2aed4dc25edac95
Build date: 2014-10-02 15:53:38-04
Xamarin addins: 99ed56b428b31eba1efaace4d82188d6f334e6ca

=== Operating System ===

Mac OS X 10.9.5
Darwin Kents-MacBook-Pro.local 13.4.0 Darwin Kernel Version 13.4.0
    Sun Aug 17 19:50:11 PDT 2014
    root:xnu-2422.115.4~1/RELEASE_X86_64 x86_64

---Additional Notes---
The circumstances of my reproduction of the error are slightly different than the customer's original issue, though the issue is extremely similar. I've requested more info from the customer to check for this.
Comment 1 Kent Green [MSFT] 2014-10-13 18:07:22 UTC
Created attachment 8401 [details]
Xamarin Studio Log files from when the error occurred
Comment 3 Rajneesh Kumar 2014-10-14 04:20:13 UTC
I have checked this issue and able to reproduce. To reproduce this issue I  have followed the steps and information provided in bug description.

Steps I have followed:

1.  Open attached test case in XS
2. Build  the application it will build successfully
3. Deploy the application on simulator
4. You will get the following exception in line 34 of SampleMoney2AppViewController.cs
   “Nullable object must have a value” 

Exception: https://gist.github.com/Rajneesh360Logica/f828193c8864fa5bf4f1

Screencast: http://www.screencast.com/t/BFty1WwH

Environment Info:

=== Xamarin Studio ===

Version 5.5 (build 227)
Installation UUID: 011d70a5-dede-428b-ab04-ef451c2e539d
Runtime:
	Mono 3.10.0 ((detached/47db868)
	GTK+ 2.24.23 (Raleigh theme)

	Package version: 310000019

=== Apple Developer Tools ===

Xcode 5.1 (5084)
Build 5B130a

=== Xamarin.Mac ===

Version: 1.10.0.13 (Business Edition)

=== Xamarin.Android ===

Version: 4.18.0 (Business Edition)
Android SDK: /Users/MM/Desktop/android-sdk-macosx
	Supported Android versions:
		2.1    (API level 7)
		2.2    (API level 8)
		2.3    (API level 10)
		3.1    (API level 12)
		3.2    (API level 13)
		4.0    (API level 14)
		4.0.3  (API level 15)
		4.1    (API level 16)
		4.2    (API level 17)
		4.3    (API level 18)
		4.4    (API level 19)
		4.4.87 (API level 20)
		4.5    (API level 21)
Java SDK: /usr
java version "1.7.0_65"
Java(TM) SE Runtime Environment (build 1.7.0_65-b17)
Java HotSpot(TM) 64-Bit Server VM (build 24.65-b04, mixed mode)

=== Xamarin.iOS ===

Version: 8.2.0.193 (Business Edition)
Hash: 959c1e4
Branch: 
Build date: 2014-10-03 00:25:37-0400

=== Build Information ===

Release ID: 505000227
Git revision: 7b721eeec7a2fa4c4f4de0ecd2aed4dc25edac95
Build date: 2014-10-02 15:53:38-04
Xamarin addins: 99ed56b428b31eba1efaace4d82188d6f334e6ca

=== Operating System ===

Mac OS X 10.9.5
Darwin MacMini.local 13.4.0 Darwin Kernel Version 13.4.0
    Sun Aug 17 19:50:11 PDT 2014
    root:xnu-2422.115.4~1/RELEASE_X86_64 x86_64
Comment 4 Rolf Bjarne Kvinge [MSFT] 2014-10-14 07:39:08 UTC

*** This bug has been marked as a duplicate of bug 23676 ***