How Can I Correctly Retrieve Precise DateTime Values from Excel Sheets as Doubles?

Resolving Double Conversion Issues for Datetime Values in Excel Sheets

When reading datetime values from Excel sheets, it's common to encounter issues where the values are returned as double types, lacking precision or the desired format. For example, attempting to retrieve a datetime value like '2007-02-19 14:11:45.730' may result in a double value, which, when converted using TimeSpan, only provides '2007-02-19 12:00:00 AM'.

To address this issue, it's essential to convert the date format from OLE Automation to the .net format using DateTime.FromOADate. This function allows for accurate datetime value extraction.

Here's how you can implement this correction:

double d = double.Parse(cellValue);
DateTime convertedDate = DateTime.FromOADate(d);

By incorporating this conversion, the datetime values obtained from Excel sheets will accurately reflect the original format, including both the date and time components.

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