Tuesday, April 20, 2010

.Net 4 VS2010 Conversion Notes

I'm in the process of converting a bunch of projects from .NET 3.5 to .NET 4.0 and know that I will be converting plenty more in the future so I thought I'd jot down some notes as I went along. This list of notes should increase over time.



.NET 3.0 and 3.5 were really an extension of .NET 2.0 so the machine.config remained constant here C:\Windows\Microsoft.NET\Framework\v2.0.50727\CONFIG\machine.config or in the 64-bit equivalent here C:\Windows\Microsoft.NET\Framework64\v2.0.50727\CONFIG

With .NET 4 we have new 32-bit and 64-bit locations here C:\Windows\Microsoft.NET\Framework\v4.0.30319\Config and here C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Config

If you've made modifications to your machine.config file for .NET 2.0, 3.0, or 3.5 then you'll have to propagate those changes to the .NET 4.0 version.


Links to conversion resources

Official What's new in ASP.NET MVC 2

ASP.NET 4 Breaking Changes


Breaking Changes that I've bumped into

<httpRuntime requestValidationMode="2.0" /> needs to be added to web.config to prevent the "A potentially dangerous Request.Form value was detected from the client" error.


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