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How do I do a case-insensitive string comparison?

  Shared By: Felicia Hill    Date: Sep 17    Category: C#    Views: 1556

Answer:

Use the string.Compare method. Its third parameter specifies case sensitivity.

"fred" == "Fred" // false
string.Compare( "fred", "Fred", StringComparison.CurrentCultureIgnoreCase ) == 0 // true
For more control over the comparison, e.g. exotic features like width-sensitivity, consider using System.Globalization.CompareInfo.Compare(), e.g.

CultureInfo.CurrentCulture.CompareInfo.Compare(
"fred", "Fred",
CompareOptions.IgnoreCase |
CompareOptions.IgnoreKanaType |
CompareOptions.IgnoreWidth
);

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