//Type a date in cell (0,1)
gcSpreadSheet1.HighlightInvalidData = true;
var valid = GrapeCity.Xaml.SpreadSheet.Data.DataValidator.CreateDateValidator(GrapeCity.Xaml.SpreadSheet.Data.ComparisonOperator.Between, new System.DateTime(2012, 12, 31), DateTime.Now, false);
gcSpreadSheet1.Sheets[0].Cells[0, 1].DataValidator = valid;
gcSpreadSheet1.Sheets[0].Cells[0, 0].Text = "Formulas";
'Type a date in cell (0,1)
GcSpreadSheet1.HighlightInvalidData = True
Dim valid = GrapeCity.Xaml.SpreadSheet.Data.DataValidator.CreateDateValidator(GrapeCity.Xaml.SpreadSheet.Data.ComparisonOperator.Between, New System.DateTime(2012, 12, 31), DateTime.Now, False)
GcSpreadSheet1.Sheets(0).Cells(0, 1).DataValidator = valid
GcSpreadSheet1.Sheets(0).Cells(0, 0).Text = "Formulas"