Bug 15572 - XmlFormatterDeserializer.GetTypeFromNamePair() throws "Type not found; name: string, namespace:" when deserializing KnownType(typeof(string[]))
Summary: XmlFormatterDeserializer.GetTypeFromNamePair() throws "Type not found; name: ...
Alias: None
Product: Class Libraries
Classification: Mono
Component: WCF assemblies ()
Version: 3.2.x
Hardware: PC Mac OS
: --- normal
Target Milestone: Untriaged
Assignee: Bugzilla
Depends on:
Reported: 2013-10-21 23:09 UTC by Brendan Zagaeski (Xamarin Team, assistant)
Modified: 2014-02-12 16:07 UTC (History)
2 users (show)

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

Test case (3.05 KB, application/zip)
2013-10-21 23:09 UTC, Brendan Zagaeski (Xamarin Team, assistant)

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Description Brendan Zagaeski (Xamarin Team, assistant) 2013-10-21 23:09:32 UTC
Created attachment 5196 [details]
Test case

Reported on behalf of a user.

Related to bug #2205. Also similar to bug #3811, but the test case for #3811 appears to be working correctly as of Mono 3.2.3.

## Summary

1. Build and run the attached test project using Mono. This will produce the following error:

"Type not found; name: string, namespace:"

The problem seems to be the use of String.Empty in the call to `XmlFormatterDeserializer.GetTypeFromNamePair (name, String.Empty)` [1]. Breaking on this call and invoking `GetTypeFromNamePair (name, "http://schemas.microsoft.com/2003/10/Serialization/")` in the Immediate window yields a nice looking result, at least in the cases `name = "int"` and `name = "string"`. 

> [1] https://github.com/mono/mono/blob/master/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/XmlFormatterDeserializer.cs#L264

2. Due to this problem, DataContractSerializer fails when deserializing DataMembers that use an array KnownType.

3. The project builds and runs without error on .NET.

4. Note that the project includes two different XML files for the serialized object. The Mono version is currently incorrect due to bug #2205.

## Version information
Mono 3.2.3
Comment 1 Brendan Zagaeski (Xamarin Team, assistant) 2013-11-26 23:32:54 UTC

Pull request that works around the problem for the test case, and that might be acceptable as a complete fix.
Comment 2 Miguel de Icaza [MSFT] 2014-02-12 15:31:31 UTC
Applied the patch.

Comment 3 Miguel de Icaza [MSFT] 2014-02-12 16:07:10 UTC
Added a unit test based on your sample as well