using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"[sS]ee, e\.g\.[^(]*\((\d*)\D+Cir[^(]*\((\d+)\D+Cir";
string input = @" Here are three examples I WANT to match:
See, e.g., Smith v. U.S. (5th Cir. 2012); U.S. v. Sara (1st Cir. 2017).
See, e.g., Jefferson v. U.S. (D.C. Cir. 2012); U.S. v. Coolidge (10th Cir. 2017).
See, e.g., Lincoln v. Jones (9th Cir. 2012); U.S. v. Roosevelt (3d Cir. 2017).
Here are three examples I DO NOT WANT to match.
See, e.g., Smith v. U.S. (1st Cir. 2012); U.S. v. Sara (5th Cir. 2017).
See, e.g., Jefferson v. U.S. (10th Cir. 2012); U.S. v. Coolidge (D.C. Cir. 2017).
See, e.g., Lincoln v. Jones (3d Cir. 2012); U.S. v. Roosevelt (9th Cir. 2017).
";
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