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How can I reliably parse strings with decimal points into doubles, regardless of locale settings?

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2025-01-28 01:36:09308browse

How can I reliably parse strings with decimal points into doubles, regardless of locale settings?

Robust String-to-Double Conversion: Handling Locale Variations

Directly converting strings containing decimal points to doubles using double.Parse() can be problematic due to locale-specific decimal separators. For instance, a comma (,) might serve as the decimal separator in some locales, leading to parsing errors if the string uses a period (.).

To guarantee consistent parsing irrespective of locale settings, utilize the CultureInfo.InvariantCulture parameter within the double.Parse() method. This ensures the parsing operation employs a culture-invariant approach, ignoring the system's current locale.

Example: double.Parse("3,5", CultureInfo.InvariantCulture) will correctly parse "3,5" as 3.5, even if the current locale uses a comma as a decimal separator. Similarly, double.Parse("3.5", CultureInfo.InvariantCulture) will always parse "3.5" correctly, regardless of locale. This approach eliminates potential parsing failures caused by locale-dependent decimal separator variations.

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