Limitations of PostSharp Essentials
PostSharp Essentials contains all the features of PostSharp Ultimate, but the number of types to which you can apply aspects is limited to 10 per project or 50 per solution.
To know how many types are already using aspects, open the PostSharp Metrics tool window in Visual Studio.
This topic contains the following sections:
PostSharp Architecture Framework has no concept of aspect and no concept of aspect target, therefore the number of types is computed differently. Instead, what is limited is the number of types for which you can call APIs like ReflectionSearch or .
There is no limit on the number of types to which you can apply aspects of the PostSharp.Patterns.Diagnostics namespace. However, when using PostSharp Essentials, your application will emit log records only one day after it has been built. After this period, your application will still work normally, but log records will no longer be emitted.
See Licensing of PostSharp Diagnostics for details.
The limitation of 50 types per solution is implemented not by looking at the sln file, but by counting the number of classes in all assemblies that are referenced by the current assembly. That is, the limit is actually 50 types in the whole assembly closure.
If you don't understand why PostSharp is requiring a commercial license, you can generate a licensing diagnostic log by building your project with the following command line:
msbuild /t:Rebuild /v:detailed /p:PostSharpTrace=Licensing > msbuild.log