using System;
using System.IO;
using System.Text.RegularExpressions;
public class Test
{
	public static void Main()
	{
		var testEcl = "\"D:\\src\\repos\\myprj\\bin\\Debug\\MyApp.exe\" /?";
		var asmName = string.Empty; 
		var m = Regex.Match(testEcl, @"([^\\]+)\.exe", RegexOptions.IgnoreCase);
		if (m.Success)
		{
		    asmName = m.Groups[1].Value;
		}
        Console.WriteLine(asmName);
	}
}