This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

How to use C# version 6.0 or higher in CorelDRAW VSTA ?

When I try to change the C# version to 6.0 or higher in the .csproj file of a VSTA project, it prompts that the version must be ISO-1, ISO-2, 3, 4, 5, or default. How can I use C# version 6.0 or higher?