Linqpad Notepad++ Hyperlink Extension

When searching through some files using LinqPad it can be useful to print out the results as a hyperlink that will open the file in Notepad++ at a particular line number.

public static class NotepadppExtension
{
    // Usage
    //string filePath = "X:/some/path/file.txt";
    //filePath.CreateNotePadppHyperLink(lineNumber);

    private const string NotePadppPath = @"C:\Program Files\Notepad++\notepad++.exe";
    private static bool onceOnly = false;

    public static Hyperlinq CreateNotepadppHyperLink(this string filePath, int lineNumber)
    {
        if (!onceOnly)
        {
            onceOnly = true;
            Debug.Assert(File.Exists(NotePadppPath), $"Notepad++.exe Path: \"{NotePadppPath}\" is wrong");
        }
        ProcessStartInfo psi = new ProcessStartInfo()
        {
            FileName = NotePadppPath,
            WorkingDirectory = Path.GetDirectoryName(NotePadppPath),
            //Arguments = " " + filePath + " -n" + lineNumber.ToString() + " ",
        };
        psi.ArgumentList.Add(filePath);
        psi.ArgumentList.Add("-n" + lineNumber.ToString());
        var filelink = new Hyperlinq(() => Process.Start(psi), filePath);

        return filelink;
    }
}

Usage

string filePath = .... ;
filePath.CreateNotePadppHyperLink(lineNumber);

A search files example in Linq

void Main()
{
	Directory.EnumerateFiles(
	@"X:\Backup\Documents\Journals\", 
	"*.log", SearchOption.AllDirectories)
		.SelectMany(file => TryFileReadLines(file).Select((text,n)=> 
                 new {Text=text,LineNumber=n+1, Link=file.CreateNotepadppHyperLink(n+1)}))
		.Where(line => 
		    //Regex.IsMatch(line.text, @"CallSearcherBase")  && 
		    line.Text.Contains("\"Search for this text\"", StringComparison.OrdinalIgnoreCase) )	
		.Dump("Matches found");
}