SkyChen91

I use this formula in Excel and can't return the default value ""Hello World!". `[ExcelFunction] public static string dnaOptionalString(string optOptTest = "Hello World!") { return optOptTest; }`  Where is...

Do I need to register these functions separately in a special way?

I have a another question, how to get the Worksheet where Range is located via ExcelReference?

Sorry，I have read this article, but still do not understand。 And I also read the source code. Find The Function [ public` static IEnumerable ProcessParameterConversions(this IEnumerable registrations, ParameterConversionConfiguration conversionConfig); ]...