How to specify path in .config file relative to the file?

Question

An app I use interprets a .NET .config file. I added a line specifying the path to a certificate it needs

Answer 1

you config file may lie on other location then the executing file. as you mantion executing path i understand this is the desktop based application so here you go what you can do like this.

in Config.

 
        AppPath\MyFile.abc
    

and to retrive this.

   var path = System.Configuration.ConfigurationManager.AppSettings["FilePath"];

            if  (path !=null && path.Contains("AppPath"))
            {

                var filepath = System.IO.Path.Combine(
                    System.Reflection.Assembly.GetExecutingAssembly().Location,
                    path.Replace("AppPath", string.Empty).ToString());

                Console.WriteLine(filepath);
            }