using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text.RegularExpressions;
 
public class Test
{
	public static void Main()
	{
		var strs = new List<string> { "*10.18).xlsx", "*(23.10.18).xlsx" };
		var block = @"[][+&|!(){}^""~?: \\/-]";
		var rx = new Regex($@"(\*)({block}?)|{block}");
    	foreach (var str in strs) {
    		string reg = "id:" + rx.Replace(str, m =>
    			m.Groups[1].Success ? $"*\\{m.Groups[2].Value}" : $"\\{m.Value}");
        	Console.WriteLine(reg);
    	}
	}
}

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