Прочитать параметры из app.config

string path = ConfigurationManager.AppSettings["FileWithUrl"];
string outpath = ConfigurationManager.AppSettings["FileForOutput"];

path = ConfigurationSettings.AppSettings.Get("FileWithUrl");
outpath = ConfigurationSettings.AppSettings.Get("FileForOutput");

     NameValueCollection appSettings = ConfigurationManager.AppSettings;
 
                // Get the AppSettings section elements.
                if (appSettings.Count == 0)
                {
                    Console.WriteLine("[ReadAppSettings: {0}]",
                    "AppSettings is empty Use GetSection command first.");
                }
                for (int i = 0; i < appSettings.Count; i++)
                {
                    Console.WriteLine("#{0} Key: {1} Value: {2}",
                      i, appSettings.GetKey(i), appSettings[i]);
                }

using System;
using ConsoleApplication1.Properties;
namespace ConsoleApplication1
{
     static class Program
    {
        private static void Main(string[] args)
        {
            Console.WriteLine(Settings.Default.Name);
            Console.WriteLine(Settings.Default.Password);
 
        }
    }
}

ConsoleApplication1.Properties.Settings.Default.FileWithUrl