SpreadsheetGear includes the WorkbookView Windows Forms Control which provides a fully functional spreadsheet control.
The WorkbookView supports rich functionality including familiar keyboard and mouse selections, in-cell editing, a FormulaBar control, go to, find, replace, auto fill, sort, cut, copy, paste, print, clear, undo, redo, charts, pictures, cell comments, conditional formats, grouping and outlining, data validation, goal seeking, text objects, form controls, autoshapes, interruptible background calculation, real-time workbook updates, multiple workbooks, Display Reference, Workbook Designer, Workbook Explorer, Range Explorer, Chart Explorer, Shape Explorer and much more.
See the Windows Forms Tutorial to learn how to use the WorkbookView control in Visual Studio.