| Practice | Why | |----------|-----| | Application.ScreenUpdating = False | Prevents UI redraws → much faster loops. | | Application.Calculation = xlCalculationManual | Avoids recalc after each cell update. | | Use Range.Value2 instead of Range.Value | Faster, no date/currency conversion overhead. | | Avoid selecting or activating objects | Direct references (e.g., ws.Range("A1") ) are faster than Select / Activate . | | Read/write arrays, not cell-by-cell | Range.Value = arrData is dramatically faster than looping cells. | | Always clean up COM references in external apps | Prevents Excel.exe from staying in memory. |
The is a powerful and mature COM library that provides deep programmatic control over Excel. It is essential for anyone automating Excel tasks across the Microsoft Office ecosystem. While it requires careful resource management and awareness of version differences, its comprehensive object model—from Application down to Range —makes it the standard choice for generating, manipulating, and analyzing Excel workbooks from code. microsoft excel 16.0 object library
By using the Microsoft Excel 16.0 Object Library, developers can harness the power of Excel's automation capabilities and build robust applications that interact with Excel programmatically. | Practice | Why | |----------|-----| | Application
Read from and write to specific cells, format ranges, and perform complex calculations. | | Avoid selecting or activating objects |
Dim xlApp As Object Set xlApp = CreateObject("Excel.Application") xlApp.Visible = True Dim wb As Workbook Set wb = xlApp.Workbooks.Add Dim ws As Worksheet Set ws = wb.Worksheets(1) ws.Range("A1").Value = "Hello Excel 16.0" ws.Range("A1").Font.Bold = True