The regular expression assumes that the part number has a specific format that consists of three sets of characters separated by hyphens. The following example illustrates the use of the IsMatch(String, String, RegexOptions, TimeSpan) method to determine whether a string is a valid part number. Indicates whether the regular expression specified in the Regex constructor finds a match in the specified input string, beginning at the specified starting position in the string. Indicates whether the regular expression specified in the Regex constructor finds a match in a specified input span. Indicates whether the regular expression specified in the Regex constructor finds a match in a specified input string. Indicates whether the specified regular expression finds a match in the specified input span. Indicates whether the specified regular expression finds a match in the specified input span, using the specified matching options. IsMatch(ReadOnlySpan, String, RegexOptions) Indicates whether the specified regular expression finds a match in the specified input string. Indicates whether the specified regular expression finds a match in the specified input string, using the specified matching options. Indicates whether the specified regular expression finds a match in the specified input span, using the specified matching options and time-out interval. IsMatch(ReadOnlySpan, String, RegexOptions, TimeSpan) Indicates whether the specified regular expression finds a match in the specified input string, using the specified matching options and time-out interval. In this article Overloads IsMatch(String, String, RegexOptions, TimeSpan) Indicates whether the regular expression finds a match in the input string.
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