Regular expression is a template to match a set of input. The pattern can consist of operators, constructs or character literals. Regex is used for string parsing and replacing the character string.
For Example:
* matches the preceding character zero or more times. So, a*b regex is equivalent to b, ab, aab, aaab and so on.
Searching a string using Regex
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static void Main(string[] args) |
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string[] languages = { "C#", "Python", "Java" }; |
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foreach(string s in languages) |
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if(System.Text.RegularExpressions.Regex.IsMatch(s,"Python")) |
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Console.WriteLine("Match found"); |
The above example searches for “Python” against the set of inputs from the languages array.
