We would not have been able to help you with the information you provided. Please always attach an example project so that we can see what you are doing and what is going wrong.
The "smart string" literal is a more powerful version of the standard string literal. It has three advantages: Supports multi-line strings. No need to escape quotes. Supports string interpolation. The smart string literal starts with $" and ends with "$. Examples: Dim s As String = $"Hello...