using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^\s*<\/?place-holder_\d{1,2}>";
string input = @"<consumers>
<place-holder_1>
<consumer>
<val>1</val>
</consumer>
</place-holder_1>
<place-holder_10>
<consumer-info>
<val>2</val>
</consumer-info>
</place-holder_10>
</consumers>";
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