using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(?<=signature date\.\r?\n)\w+(?=\sSignatory attests)";
string input = @"to execute Form 4506-C on behalf of the taxpayer. Note: This form must be received by IRS within 120 days of the signature date.
Signatory attests that he/she has read the attestation clause and unon so reading declares that he/she has the authority to sign the
Form 4506-C. See instructions.
to execute Form 4506-C on behalf of the taxpayer. Note: This form must be received by IRS within 120 days of the signature date.
X Signatory attests that he/she has read the attestation clause and unon so reading declares that he/she has the authority to sign the
Form 4506-C. See instructions.
to execute Form 4506-C on behalf of the taxpayer. Note: This form must be received by IRS within 120 days of the signature date.
asdas Signatory attests that he/she has read the attestation clause and unon so reading declares that he/she has the authority to sign the
Form 4506-C. See instructions.
";
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