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Editorial Team
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Asked: 2026-06-14T22:48:57+00:00

string.IsNullOrEmpty(myString.Trim()) vs string.IsNullOrWhiteSpace(myString) Which one is faster or more reliable and why is that?

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string.IsNullOrEmpty(myString.Trim()) vs string.IsNullOrWhiteSpace(myString)

Which one is faster or more reliable and why is that?

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1 Answer

  1. Editorial Team

    string.IsNullOrEmpty(myString.Trim()) will throw exception if myString is null, whereas string.IsNullOrWhiteSpace(myString) will work just fine, so it’s more reliable.

    As for the performance, string.IsNullOrWhiteSpace should be faster.

    string.IsNullOrWhiteSpace(myString) is prefered way of checking if variable is empty or whitespace.

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