/// <summary>
/// Determines whether [is alpha only] [the specified rule].
/// </summary>
/// <param name="rule">The rule.</param>
/// <param name="value">The value.</param>
/// <returns><c>true</c> if [is alpha only] [the specified rule]; otherwise, <c>false</c>.</returns>
private static bool IsAlphaOnly(Rule rule, string value)
{
return(string.IsNullOrEmpty(value) || AlphaOnly.IsMatch(value));
}
/// <summary>
/// Determines whether [is alpha numeric] [the specified rule].
/// </summary>
/// <param name="rule">The rule.</param>
/// <param name="value">The value.</param>
/// <returns><c>true</c> if [is alpha numeric] [the specified rule]; otherwise, <c>false</c>.</returns>
private static bool IsAlphaNumeric(Rule rule, string value)
{
return(string.IsNullOrEmpty(value) || Numeric.IsMatch(value));
}