I want to verify a digitally Signed PDF, below is the code
GroupDocs.Signature.Signature signature = new Signature("sample_signed.pdf");
but I am getting the error which states
CS0234 C# The type or namespace ‘Signature’ does not exist in the namespace ‘GroupDocs.Signature’ (are you missing an assembly reference?)
my groupdocs version is 19.6, what can be the issue here?