Recently, I needed to update my xConnect Tutorial from 9.0 to 9.2 so I could start looking at the new data purge API (more on that another day). I figured it should be an easy enough upgrade, my tutorial wasn’t doing anything complicated. Just some basic Create Contact or Register Interaction stuff.

So, I did the usual:

1. Update Target Framework from 4.6.2 to 4.7.2
2. Change all the NuGet references to the 9.2 packages
3. Recompile
4. Squint at all the red compile errors from doing an upgrade…

CertificateWebRequestHandlerModifier is gone

The most obvious errors I hit were the with the handler modifiers. I used these classes to create connections to the end points. My code looked like this:

var options = CertificateWebRequestHandlerModifierOptions.Parse("StoreName=My;StoreLocation=LocalMachine;FindType=FindByThumbprint;FindValue=" + thumbprint); 

var certificateModifier = new CertificateWebRequestHandlerModifier(options);

These classes did not seem to exist anymore. Doing some digging, it seems that at some point there was a renaming that happened. These were now called (respectively):

• CertificateHttpClientHandlerModifierOptions 
• CertificateHttpClientHandlerModifier

So the new code was easy enough to update:

var options = CertificateHttpClientHandlerModifierOptions.Parse("StoreName=My;StoreLocation=LocalMachine;FindType=FindByThumbprint;FindValue=" + thumbprint); 

var certificateModifier = new CertificateHttpClientHandlerModifier(options);

On a related note, I had an array of these being returned somewhere, and I used the interface to refer to the collection: IWebRequestHandlerModifier. This interface was also gone and now replaced by IHttpClientHandlerModifier.

No More No References

I unfortunately had to live with the fact that we no longer have the .NoReferences NuGet packages. This meant some restructuring in what I would include. I couldn’t just target the specific low level pieces anymore, so I needed to update to grab the bigger chunks. I chose to use:

• Sitecore.XConnect
• Sitecore.XConnect.Client
• Sitecore.XConnect.Collection.Model
• Sitecore.Xdb.ReferenceData.Client

It Compiles, must be working!

Unfortunately, I’ve been at this too long to celebrate success at a compilation point of an upgrade. Testing needed to happen, so I booted it up and everything blew up right away.

For some reason, it couldn’t find System.Http. I started updating all my assembly bindings to newer versions hoping that was the problem, but it just didn’t work. I finally had to remove the assembly binding for System.Net.Http to resolve the issue.

It’s alive!

All in all, not a bad upgrade. Data was inserting correctly and the tutorial flow completed all it’s tasks. Now it’s time to look into those new 9.2 API changes!