culture invariant object ToString()

Question

How can I call ToString() on an object and make it use the invariant culture? There are overloads for ToString() on objects that implement IConvertible (like bool, int, float..), but what if the object in question is not IConvertible?

Answer 1

The System.Convert class has a static ToString overload that takes an object.

Convert.ToString(obj, CultureInfo.InvariantCulture); 

Based on my benchmarks, this is roughly twice as fast as string.Format(CultureInfo.InvariantCulture, "{0}", value) and, more importantly, it looks cleaner. However, if you are building a string already, I'd recommend FormattableString.Invariant.

FormattableString.Invariant($"Object value: {obj}") 

Answer 2

I think IFormattable is the relevant interface. It has a ToString method that lets you specify the format provider, which can be a culture.