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Home/ Questions/Q 6753209
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Editorial Team
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Editorial Team
Asked: May 26, 20262026-05-26T13:08:00+00:00 2026-05-26T13:08:00+00:00

Good Morning All! I have been developing a project for some time in which

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Good Morning All!

I have been developing a project for some time in which users can publish a set of values for a set of dates.

e.g. The user would select a Range in Excel which would contain date values, and an equally sized Range which contains values to publish corresponding to these dates.

What I need to do (C#) is check the cell formatting of both Ranges to see which one is ‘actually’ a date, I’ve been using ExcelDNA and since all dates are returned as doubles, I can technically parse my ‘values’ to dates, and cause all kinds of problems.

If I can get the cell formatting, I can see whether the cell is actually meant to be a date!

Thanks in advance.

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  1. Editorial Team
    Editorial Team
    2026-05-26T13:08:01+00:00Added an answer on May 26, 2026 at 1:08 pm

    The Range.NumberFormat should help you determine if a given cell/range is formatted to a date. If the cell/range is date formatted then the NumberFormat property will contain the format string, i.e. dd/mm/yyyy

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