Programmer's Reference

ExcelWriter provides two development solutions that can be used separately or together:

• ExcelTemplate
  
  Introduction to ExcelTemplate: Create a Spreadsheet with ExcelTemplate
  
  ExcelTemplate is the main class for template-driven document generation. This object opens an ExcelWriter template file, populates it with data from a specified data source, and generates a new Excel workbook.
  
  
• ExcelApplication
  
  

  ExcelApplication is not available in ExcelWriterSE.

  
  Introduction to ExcelApplication: Create a Spreadsheet with ExcelApplication
  
  ExcelApplication is the main class for pure code-based workbook generation. This class is an engine used to open, create, and write (save or stream to a browser) workbooks. A single instance of ExcelApplication can generate multiple Excel workbooks.

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. Or, you could generate a template spreadsheet with ExcelApplication and pass the spreadsheet to ExcelTemplate to be populated.

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