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How to apply borders for the merge cells programmatically at runtime in WinForms Spreadsheet (SfSpreadsheet)?

Platform: WinForms |
Control: Spreadsheet

Set the cell borders for merged cell

SfSpreadsheet provides support to set the cell borders for merged cells programmatically at runtime.

Cell Merging

For merging the cells, you need to add the CoveredCellInfo into CoveredCells collection of SpreadsheetGrid in WorkbookLoaded event and merge the range using Merge method in XlsIO.


spreadsheet.WorkbookLoaded += Spreadsheet_WorkbookLoaded;
private void Spreadsheet_WorkbookLoaded(object sender, WorkbookLoadedEventArgs args)
    var worksheet = spreadsheet.Workbook.Worksheets[0];
    var coveredcell = new CoveredCellInfo(8, 8, 11, 11);
    var range = worksheet.Range[8, 8, 11, 11];

Border settings

Border can be applied by setting LineStyle and Color property of IBorders to the merged range.


var worksheet = spreadsheet.Workbook.Worksheets[0];
var cell = worksheet.Range[8, 8, 11, 11];
//Apply border for the cell
cell.Borders.LineStyle = ExcelLineStyle.Thick;
cell.Borders.Color = ExcelKnownColors.Red;
spreadsheet.ActiveGrid.InvalidateCell(cell.Row, cell.Column);





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