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Validate if a String contains a GUID in groups of 8, 4, 4, 4, and 12 digits with hyphens between the groups. The entire GUID can optionally be enclosed in matching braces or parentheses.


public static bool IsGuid(this string value)
	if (string.IsNullOrEmpty(value))
		return false;

	const string pattern = @"^(\{{0,1}([0-9a-fA-F]){8}-([0-9a-fA-F]){4}-([0-9a-fA-F]){4}-([0-9a-fA-F]){4}-([0-9a-fA-F]){12}\}{0,1})$";
	return Regex.IsMatch(value, pattern);


string testValue = "{CA761232-ED42-11CE-BACD-00AA0057B223}";
bool isGuid = testValue.IsGuid();

Author: Alvaro Torres Tatis

Submitted on: 29 feb 2012

Language: C#

Type: System.String

Views: 5579