How to enable single sign on for your application

The  first step for this is to Register your application with your Azure Active Directory tenant. There a good article  @ docs.microsoft.com which explains this. Please have a look here  https://docs.microsoft.com/en-us/azure/active-directory/active-directory-app-registration

Configuring an Executable to Run as a Service on Windows Server?

Windows NT Resource Kit provides below two utilities that allow you to run an executable as a service

Instrsrv.exe

Srvany.exe
 

More details regarding the same can be found at the below links.

https://support.microsoft.com/en-us/kb/137890

http://davidjnice.com/windows_server_run_as_service.html

Implementing self-service portal to reset/unlock user accounts and passwords for your organizations Active Directory

You can find how to accomplish the same here

https://technet.microsoft.com/en-us/library/ee534892(WS.10).aspx

C# Code to read Active directory attributes for a user

Juts add the below code to a Windows/Web solution and assign the results to a label in you form

using System.DirectoryServices;

using System.Collections;

DirectoryEntry dir = new DirectoryEntry();

dir.Path = "LDAP://YourActiveDirServername ";

DirectorySearcher sea = new DirectorySearcher(dir);

sea.Filter = "(sAMAccountName=user)";

SearchResult seares = sea.FindOne();

StringBuilder str = new StringBuilder();

System.DirectoryServices.ResultPropertyCollection prop = seares.Properties;

ICollection coll = prop.PropertyNames;

IEnumerator enu = coll.GetEnumerator();

while (enu.MoveNext())

{

str.Append(enu.Current + " = " + seares.Properties[enu.Current.ToString()][0] + "\n");

}

label1.Text = str.ToString();