Question

Essentially, I have a string that has placeholders that I am passing into String::Format(), as such:

"The {0} brown {1} jumped over the {2} {3}."

And I have another comma delimited string which contains the strings I wish to fill in to the formatting placeholders, as such:

"quick,fox,lazy,dog"

So it would only seem natural that to fill the format string I would Split(',') the second string, and pass that as the second argument in Format(first_str, second_split_array);

But splitting the second array produces a System::Array^ which Format() sees as only one object, thus getting angry and telling me my index must be less than or equal to the number of arguments passed.

Last I heard, String.Format() can use an array as the second arg, so… what do I have to do to get the string split in a way that Format() will see as all the args?

Edit:

The idea here is that the number of indexed elements is not the same every time. The goal I am trying to achieve is to take data sent from a server and fill it in to a template. The server sends back a comma delimited list and a template name. So, for the quick fox example it’d send what I have above, but other times It’ll send, say, error, which uses:

"An error has occurred: {0}
(Details: {1})"

and the server arguments "Error Name,Error text description and such."

Answer 1

It’s probably because you’re passing an array<String^>^ as the second argument to String::Format. If you want the overload of String::Format that takes an array as the second argument (and uses each element in the array as the formatting items), you need to pass an array<Object^>^ (where each Object^ is a String^).