Spreadsheet.WinForms version 1.8 contains the following new features and improvements:

Spilled arrays
Formulas can now run arithmetic operations on whole ranges and return two-dimensional arrays as results. Elements from such arrays are assigned to adjacent cells to the one that calculates the formula. For example, you could show element-wise sum of ranges by setting a single formula in =A1:C3+E1:F3 format. If a cell from the spill range already contains a value, the formula returns a #SPILL error. Apart from arithmetic calculations, spilled arrays can also be returned by following new functions.



Spilled array functions

• FILTER returns an array of filtered rows from specified source range.
• SORT returns an array of sorted rows or columns from specified source range.
• UNIQUE returns an array of unique values from the specified range.
• XLOOKUP searches for a value in a range and returns the matching row or column from specified results range.

Miscellaneous

• Set the ShowLeadingApostrophes property to stop hiding escaping leading apostrophe (used to treat remaining cell content as text).
• Formula bar preserves original text when evaluation is disabled.
• Improved compatibility with Excel of VLOOKUP function in undefined cases (when lookup value is missing and source range is not sorted).
• DATEDIF function fix for calculating month difference.
• YEARFRAC function calculates the ratio between days in specified interval to the number of days in a year.

If anyone is interested in trying the beta version, please download this archive containing updated assemblies and help file:
https://mindfusion.eu/_beta/spreadwin18.zip

1.8 build is also available as nuget package:
https://www.nuget.org/packages/MindFusion.Spreadsheet/1.8.0-beta1

Any comments, questions and general feedback are welcome.