Number formats in Microsoft Excel define how data is displayed in your spreadsheet without changing the underlying values. As well as using number formats to present data as dates, times, percentages, ...
The core .NET data types include a nice variety of pre-defined and custom formatting codes that you can use when merging string templates and data elements together: message = String.Format( "As of {0 ...
Reporting lots of large values in Excel is probably a good thing, but if you want them to be readable, try this easy technique. The article, Use a custom format in Excel to display easier to read ...