TypeLoadException when using SPMetal proxy

Question

Hi,

I try to use ADO.NET Data Services using the SPMetal tool provied with SharePoint 2010. (Console App, x64)

When a LINQ query executes, the following TypeLoadException occures:

Could not load type 'System.Data.Services.OpenTypes.LateBoundMethods' from assembly 'Microsoft.Data.Services, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.

Using Reflector I see that the LINQ assembly tries to call "LateBoundMethods" property, but it's not available in Microsoft.Data.Services.dll. I can see the assembly loaded in Module Windows

Version/Token etc. is right. Same behavior with CTP 1 and CTP 2.

There is probably a compatibility issue between SharePoint 14 and .NET 3.5 SP1. Any idea what combination is currently working? I really need to check out some things to get prepared before final codes arrives.

Thanks,

Joerg

Configuration:
Windows 2008 Standard x64, SharePoint 2010 TAP, Visual Studio 2010 Beta 2, .NET 3.5 SP 1

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JK64

Answer 1

Hi,

just as a follow up. Uninstalling ADO.NET Data Service puts SPMetal classes back into operation.

I'm pretty sure that the current ADO.NET Data Service CTP 2 is not compatible with SharePoint 2010 Beta.

Joerg

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JK64