Determining Whether a String Is Contained Within a String Array (Case Insensitive)

Published 09 March 10 02:14 PM | Scott Mitchell

About once every couple of months I need to write a bit of code that does one thing if a particular string is found within an array of strings and something else if it is not ignoring differences in case. For whatever reason, I never seem to remember the code snippet to accomplish this, so after spending 10 minutes of research today I thought I'd write it down here in an effort to help commit it to memory or, at the very least, serve as a quick place to find the answer when the need arises again.

So without further adieu, here it is:

Visual Basic Version:

If stringArrayName.Contains("valueToLookFor", StringComparer.OrdinalIgnoreCase) Then
End If

C# Version:

if (stringArrayName.Contains("valueToLookFor", StringComparer.OrdinalIgnoreCase))

Without the StringComparer.OrdinalIgnoreCase the search will be case-sensitive. For more information on comparing strings, see: New Recommendations for Using Strings in Microsoft .NET 2.0.

Happy Programming!

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