// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-.NET
// Accessing the reference of the worksheet that is currently active
GridWorksheet sheet = GridWeb1.WorkSheets[GridWeb1.ActiveSheetIndex];

sheet.Cells.Clear();

// Creating an instance of WebBorderStyle
WebBorderStyle bstyle = new WebBorderStyle();

// Setting the border style, width and color
bstyle.BorderStyle = BorderStyle.Double;
bstyle.BorderWidth = new Unit(3, UnitType.Pixel);
bstyle.BorderColor = Color.Blue;

// Applying the instance of WebBorderStyle on a specified range of cells
sheet.Cells.SetBorders(1, 1, 5, 4, SetBorderPosition.Cross, bstyle);