using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^CDPHP_SPRPT_GapList_[0-9]{6}(2[0-1]|1[01][0-9]|1[6-9])_[0-9]{9}.txt";
string input = @"NY_Community_CLM_DIAG_08282019.txt
NY_Community_CLM_DIAG_07152019.txt
CDPHP_SPRPT_GapList_20191028_619675879.txt
CDPHP_SPRPT_GapList_20191021_617641986.txt
CDPHP_SPRPT_GapList_20191017_616743586.txt
CDPHP_SPRPT_GapList_20191040_619675879.txt
CDPHP_SPRPT_GapList_20191018_616743586.txt
CDPHP_SPRPT_GapList_20191019_616743586.txt
CDPHP_SPRPT_GapList_20191020_616743586.txt
CDPHP_SPRPT_GapList_20191016_616743586.txt
CDPHP_SPRPT_GapList_20191015_616743586.txt
CDPHP_SPRPT_GapList_20191009_616743586.txt
CDPHP_SPRPT_GapList_20200816_616743586.txt";
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