using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^[A-Za-z]+(?:\s+[A-Za-z]+)*(?=:)";
string input = @"Necessity:(noun)the need for something, or something that is needed Example: In my work, a computer is a necessity.
Lay of the land: (idiom n. Or v.)the general state or condition of affairs under consideration; the facts of a situation Example: We asked a few questions to get the lay of the land
Mumble:(verb) to speak quietly or in an unclear way so that the words are difficult to understand Example: She mumbled something about needing to be home, then left.";
RegexOptions options = RegexOptions.Multiline;
foreach (Match m in Regex.Matches(input, pattern, options))
{
Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index);
}
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx