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• If the workbook formatting needs to be modified dynamically at runtime, the changes should be made in the unpopulated template before populating the data, rather than to the populated file.
• Design the template file, load it in ExcelApplication and make any other customizations desired, then pass it on to ExcelTemplate to load in the data.

  Code Block
  // POSSIBLE CORRECT CODE: ExcelApplication xla = new ExcelApplication(); Workbook wb = xla.Open(Page.MapPath(@"path\to\code.xlsx")); /*...*/ ExcelTemplate xlt = new ExcelTemplate(); xlt.Open(xla, wb); xlt.Process(); xlt.Save(Page.Response, "Completed.xlsx", false);

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• Don't vaguely guess how much area a data set might take, try to narrow down the area as much as possible towards only populated data.
• Start with the range of populated cells so you are only looping through theirs.

  Code Block
  // POSSIBLE CORRECT CODE: Area testArea = ws.CreateArea(1,1,20,4); // Create areas that are as accurately sized to the data as possible, as opposed to vastly overscaled.

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