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ExcelWriter allows you to generate a spreadsheet from script alone - using the ExcelApplication object - or from a template spreadsheet and a script, using ExcelTemplate. ExcelTemplate provides an intuitive high-performance way to import database values to a spreadsheet, but cannot otherwise modify a spreadsheet at runtime. ExcelApplication's rich object model allows you to modify every aspect of the spreadsheet at runtime. You can take advantage of the features of both ExcelApplication and ExcelTemplate by using them together. For example, you can use ExcelTemplate to open and populate an ExcelWriter template, then pass the populated workbook to ExcelApplication and add a chart.


Though the ExcelTemplate object supports Excel's BIFF8 (Excel 97/2000/XP/2003) and Office Open XML (Excel 2007) formats, the ExcelApplication does not yet support Office Open XML (Excel 2007) formats. Templates based on Office Open XML files (.xlsx and .xlsm) should not be passed to the ExcelApplication object.

To pass a workbook from ExcelTemplate to ExcelApplication, do not call ExcelTemplate.Save. Instead, pass the ExcelTemplate object to ExcelApplication's Open method:

Code Sample: Passing ExcelTemplate to ExcelApplication

[C#] | [VB.NET]

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