Question

I’m currently using N0 to format my numbers. Is there a format to use to allow only positive – anything less than 0 should default to 0?

Answer 1

You can do this by specifying different formats within one format string like this:

someNumeric.ToString("N0;\"0\"");

or the same as part of Format string:

String.Format("{0:0;\"0\";}", someNumeric);

The order is (for 2 format string):

positiveformat-or-zeroformat;negative

See here for further info:
http://msdn.microsoft.com/en-us/library/0c899ak8.aspx#SectionSeparator