using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(<ApplicationPath>.*\\West\\.*<\/ApplicationPath>\n)<CommandLine \/>";
string substitution = @"$1<CommandLine>trees -nowindow</CommandLine>";
string input = @"<ApplicationPath>F:\Objects\Trees\Conifers\North America\West\comporgel.zip</ApplicationPath>
<CommandLine />
<ApplicationPath>F:\Objects\Trees\Conifers\North America\West\Christmas.zip</ApplicationPath>
<Photo />
<ApplicationPath>F:\Objects\Trees\Conifers\North America\West\spruce1.zip</ApplicationPath>
<CommandLine />
<ApplicationPath>F:\Objects\Trees\Conifers\North America\East\spruce1.zip</ApplicationPath>
<CommandLine />";
RegexOptions options = RegexOptions.Multiline;
Regex regex = new Regex(pattern, options);
string result = regex.Replace(input, substitution);
}
}
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