Quickstart

Quickstart

This walkthrough creates a workbook, writes a small table of values, applies a bold header style, and saves the result — the fastest path from installation to a real .xlsx file.

Prerequisites

Step 1: Create a workbook and access the first worksheet

A new Workbook always starts with one worksheet, available through the Worksheets slice:

wb := cells_foss.NewWorkbook()
ws := wb.Worksheets[0]
fmt.Println("Worksheets available:", len(wb.Worksheets))
_ = ws

Step 2: Write cell values

Use Cells().Set(ref, value) to write a value to a cell by its A1-style reference:

wb := cells_foss.NewWorkbook()
ws := wb.Worksheets[0]

ws.Cells().Set("A1", "Product")
ws.Cells().Set("B1", "Revenue")
ws.Cells().Set("A2", "Widget A")
ws.Cells().Set("B2", 42000)

Step 3: Bold the header row

Build a Style with a bold Font and apply it to the header cells with Cell.SetStyle:

wb := cells_foss.NewWorkbook()
ws := wb.Worksheets[0]
ws.Cells().Set("A1", "Product")
ws.Cells().Set("B1", "Revenue")

boldStyle := cells_foss.NewStyle()
boldStyle.Font.Bold = true
for _, ref := range []string{"A1", "B1"} {
	cell, _ := ws.Cells().Get(ref)
	cell.SetStyle(boldStyle)
}

Step 4: Save the workbook

wb := cells_foss.NewWorkbook()

if err := wb.Save("report.xlsx"); err != nil {
	fmt.Printf("Error saving workbook: %v\n", err)
	return
}
fmt.Println("Workbook saved to report.xlsx")

Open report.xlsx in Excel or LibreOffice to see the bold header row and the two data cells.

Next Steps

• Developer Guide: Styling, data validation, tables, pictures, and streaming reads
• API Reference: Full class and method documentation
• Knowledge Base: Task-oriented how-to guides

See Also

• Aspose.Cells — Enterprise Product Family