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I’m writing a C# program that outputs thousands of lines into an excel spreadsheet using the Excel 12.0 Object Library. I noticed that it was generally pretty slow, so I timed it with the Stopwatch class and found out each write to a cell was taking around 4 million ticks.
Edit: 4 not 100 million
Yes, this speed is normal – it is painfully slow.
There are faster alternatives available. I have used SpreadsheetGear, which I found easy to use and much faster.