Unable to get valued from config files null exception is displayed - Can't load file RemoteWebDriver.cs under c:\Projects\webdriver\dotnet\src\webdriver\Remote. Check the file permission and the existence of that file.

1. Create a new solution by choosing class library
2. Download the Selenium references for c # from http://www.seleniumhq.org/download/
3. Download Gallio refernces from http://code.google.com/p/mb-unit/downloads/list select GallioBundle-3.4.14.0-Setup-x86.msi    4. Provide the following referneces for the class.cs
    using OpenQA.Selenium;
    using OpenQA.Selenium.Support.UI;
    using OpenQA.Selenium.Firefox;

    using Gallio;
    using Gallio.Framework;
    using MbUnit.Framework;
5. Copy below .cs file and make necessary changes
/*
 * Created by SharpDevelop.
 * User: Admin
 * Date: 3/3/2015
 * Time: 3:29 PM
 *
 * To change this template use Tools | Options | Coding | Edit Standard Headers.
 */
using System;
using System.Collections.Generic;
using System.Configuration;

using OpenQA.Selenium;
using OpenQA.Selenium.Support.UI;
using OpenQA.Selenium.Firefox;

using Gallio;
using Gallio.Framework;
using MbUnit.Framework;

namespace Configurationfiles
{
    /// <summary>
    /// Description of MyClass.
    /// </summary>
    [TestFixture]
    public class MyClass
    {

        public IWebDriver _driver = null;
        
        [SetUpAttribute]
        public void setup()
        {
            _driver = new FirefoxDriver();
        }
        
        [TearDown]
        public void teardown()
        {
            _driver.Quit();
        }
        
        [Test]
        public void method()
        {
            string url = ConfigurationManager.AppSettings["value1"];
            _driver.Navigate().GoToUrl(url);
            IWebElement query = _driver.FindElement(By.Name("q"));
             // Enter something to search for
             query.SendKeys("Selenium");
             // Now submit the form
             query.Submit();
             // Google's search is rendered dynamically with JavaScript.
             // Wait for the page to load, timeout after 5 seconds
             WebDriverWait wait = new WebDriverWait(_driver, TimeSpan.FromSeconds(5));
             wait.Until((d) => { return d.Title.StartsWith("selenium"); });
             //Check that the Title is what we are expecting
             Assert.AreEqual("selenium - Google Search", _driver.Title);
        }
    }
        
    }
6. Add a configuration file and add a key and value as <add key="value1" value="https://www.google.co.in/?gws_rd=ssl"/>

7. Build the solution
8. Load the application dll in GallioIcarus.exe
9. Run the test
    
Version of the product using:

SharpDevelop Version : 4.4.1.9729-7196a277
.NET Version         : 4.0.30319.34209
Gallio               : Version 3.4 build 11
Selenium             : 2.45.0
OS                   : Windows 7
Firefox              : 36

Additional information below.
Screenshot: http://screencast.com/t/3NGgSapXZ