C# illegal characters in the path

Question

I am getting illegal characters in the path by using the below codes:

string fileNameExisting = Application.StartupPath + "\\CodesLocation\\Template.pdf";
PdfReader templateFile = new PdfReader(fileNameExisting);

I tested a few variations:

string fileNameExisting = @Application.StartupPath + "\CodesLocation\Template.pdf";
PdfReader templateFile = new PdfReader(fileNameExisting);

But it is still getting the same illegal error.

Can anyone help me see if my code if wrong?

Thanks.

Answer 1

I suggest using the appropriate way to join paths in .net: Path.Combine

So

Path.Combine(Application.StartupPath, "CodesLocation","Template.pdf");