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