Match one of 1, 2, x or X, or nothing
private Boolean patternIsMatch(String text) {
// Alternatives; one of 1, 2, x or X, or nothing is accepted pattern.
Regex pattern = new Regex(@"^([12xX]{1}|^)$");
return pattern.IsMatch(text);
}Match one of 1, 2, x or X, or nothing
private Boolean patternIsMatch(String text) {
// Alternatives; one of 1, 2, x or X, or nothing is accepted pattern.
Regex pattern = new Regex(@"^([12xX]{1}|^)$");
return pattern.IsMatch(text);
}Copyright © 2021 Codeinu
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