using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^.*Optional Imprint[^.]*\.";
string input = @"Front: 1 1/2"" W x 1"" H ... Back: 2 1/4"" W x 1 1/4"" H Standard Imprint Area is the front. Optional Imprint Area is the back. Imprint on Standard Location Unless Otherwise Specified on Order. For Printing on Both Positions, Add $40.00(G) Set Up Plus .25(G) Per Piece.";
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