We\'ve got a couple of on-premises dbs and we\'re seeing if we can migrate them to SQL Azure. Some of those dbs have a couple of user defined functions written in C# in an a
CLR Functions are not supported in Azure:
Check here:
Azure SQL Database Transact-SQL differences
Under unsupported features it mentions ".NET Framework CLR integration with SQL Server"
I believe there may be some confusion as to whether it does or doesn't support them as they used to in one version, then they removed support.
Here is a link detailing the fact they were supported, but got pulled, apparently due to a security issue:
Breaking News, Literally: SQL CLR Support Removed from Azure SQL DB