User-271186128 posted
Hi Markus33,
Compiler Error Message:
CS0234: The type or namespace name 'Http' does not exist in the namespace 'Microsoft.AspNet' (are you missing an assembly reference?)
From the error message, it seems that the Microsoft.AspNet hasn't installed for the application.
As far as I know, the
Microsoft.AspNet.Http.Extensions is used in the asp.net 5 application, if you want to use the UriHelper in asp.net core application, we could use the Microsoft.AspNetCore.Http.Extensions.
Please check the reference(dependencies), and make sure you have installed the right version.
Best regards,
Dillion