Something missing in my C# custom config implementation

Something missing in my C# custom config implementation

I've tried to write an application with custom config implementation - for
this purpose I had written down a small dummy app which I could later
follow. But, I'm just not able to load the config. Any ideas on what I'm
missing here would be of real help.
Config File
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<!-- Configuration section-handler declaration area. -->
<configSections>
<sectionGroup name="SecuritySettingsGroup">
<section name="SecuritySettings"
type="ConfigSecHandler.ServicesSection, ConfigSecHandler"/>
</sectionGroup>
<!-- Other <section> and <sectionGroup> elements. -->
</configSections>
<!-- Configuration section settings area. -->
<SecuritySettingsGroup>
<SecuritySettings>
<ServiceSecuritySettings>
<Service svcName="xStore" svcUser="user1"
svcPermissions="pemission1"/>
<Service svcName="xStore" svcUser="user2"
svcPermissions="pemission3"/>
</ServiceSecuritySettings>
</SecuritySettings>
</SecuritySettingsGroup>
</configuration>
Classes
using System;
using System.Collections.Generic;
using System.Text;
using System.Configuration;
using System.Xml;
namespace ServicesConfigSection {
public class ServicesSection : ConfigurationSection {
[ConfigurationProperty("ServiceSecuritySettings",
IsDefaultCollection = false)]
[ConfigurationCollection(typeof(ServiceCollection),
AddItemName = "Service")]
public ServiceCollection Services {
get { return
(ServiceCollection)this["ServiceSecuritySettings"]; }
set { this["ServiceSecuritySettings"] = value; }
}
public static ServicesSection GetConfiguration() {
return
GetConfiguration("SecuritySettingsGroup/SecuritySettings");
}
public static ServicesSection GetConfiguration(string section) {
return ConfigurationManager.GetSection(section) as
ServicesSection;
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Configuration;
namespace ServicesConfigSection {
public class ServiceCollection : ConfigurationElementCollection {
protected override ConfigurationElement CreateNewElement() {
return new ServiceElement();
}
protected override object GetElementKey(ConfigurationElement
element) {
return ((ServiceElement)element).SvcName;
}
public override ConfigurationElementCollectionType CollectionType {
get { return
ConfigurationElementCollectionType.AddRemoveClearMap; }
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Configuration;
namespace ServicesConfigSection {
public class ServiceElement : ConfigurationElement {
[ConfigurationProperty("svcName", DefaultValue = "", IsRequired =
true)]
public String SvcName {
get { return (String)this["svcName"]; }
set { this["svcName"] = value; }
}
[ConfigurationProperty("svcUser", DefaultValue = "", IsRequired =
true)]
public String SvcUser {
get { return (String)this["svcUser"]; }
set { this["svcUser"] = value; }
}
[ConfigurationProperty("svcPermissions", DefaultValue = "",
IsRequired = true)]
public String SvcPermissions {
get { return (String)this["svcPermissions"]; }
set { this["svcPermissions"] = value; }
}
}
}
Main
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Configuration;
using ServicesConfigSection;
namespace TestApp {
class Program {
static void Main(string[] args) {
ServicesSection svcConfig = ServicesSection.GetConfiguration();
foreach (ServiceElement thisConfig in svcConfig.Services) {
Console.WriteLine(thisConfig.SvcName);
}
}
}
}
Error Faced during loading the XML
System.Configuration.ConfigurationErrorsException was unhandled Message=An
error occurred creating the configuration section handler for
SecuritySettingsGroup/SecuritySettings: Could not load type
'ConfigSecHandler.ServicesSection' from assembly 'ConfigSecHandler'.
(######\TestApp\bin\Debug\TestApp.vshost.exe.config line 6)