How to get current Domain of the PC in C# and VB.NET

To get current Domain of the PC in C# and VB.NET you can use the snippet below.

Sample C#

using System;
using System.DirectoryServices.ActiveDirectory;

namespace de.Fesslersoft.DomainTest
{
    class Program
    {
        static void Main(string[] args)
        {
            var myDomain = Domain.GetComputerDomain();
            foreach (DomainController dc in myDomain.DomainControllers)
            {
                Console.WriteLine("{0} - {1}", dc.IPAddress, dc.Name);
            }
            Console.Read();
        }
    }
}

Sample VB.NET

Imports System.DirectoryServices.ActiveDirectory

Namespace de.Fesslersoft.DomainTest
	Class Program
		Private Shared Sub Main(args As String())
			Dim myDomain = Domain.GetComputerDomain()
			For Each dc As DomainController In myDomain.DomainControllers
				Console.WriteLine("{0} - {1}", dc.IPAddress, dc.Name)
			Next
			Console.Read()
		End Sub
	End Class
End Namespace

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How to check if a variable exists in Python

To check if a variable exists in Python, you can use the snippet below.

Sample Python

if 'myVariable' in locals(): # myVariable exists locally.
if 'myVariable' in globals(): # myVariable exists globally.

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How to Log off, Restart or Shutdown Windows using Batch

To Logoff, Restart or Shutdown Windows using Batch you can Simply execute shutdown with the needed parameters. To execute the shutdown command you need the sufficient user privileges.

List of Parameters

  • -l Logs off the current user, this is also the default. -m ComputerName takes precedence.
  • -s Shuts down the local computer.
  • -r Reboots after shutdown.
  • -a Aborts shutdown. Ignores other parameters, except -l and ComputerName. You can only use -a during the time-out period.
  • -f Forces running applications to close. Note that if you are on a remote machine without using -f your session maybe closed but a hanging program blocks the Shutdown
  • -m [ \\ ComputerName ] Specifies the computer that you want to shut down.
  • -t xx Sets the timer for system shutdown in xx seconds. The default is 20 seconds.
  • -c ” message “ Specifies a message to be displayed in the Message area of the System Shutdown window. You can use a maximum of 127 characters. You must enclose the message in quotation marks.
  • -d [ u ][ p ] : xx : yy Lists the reason code for the shutdown. Reason Codes (u=Indicates a user code), (p=Indicates a planned shutdown cod), (xx=Specifies the major reason code (0-255)), (yy=Specifies the minor reason code (0-65536)
  • /? Displays help at the command prompt.
  • FOR MORE INFORMATIONS AND DETAILS TAKE A LOOK AT THE MSDN.

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    How to get the IPAddress in PHP

    Sample PHP

    function GetIpAddress(){   
    	$ip = '';
    	if(!empty($_SERVER['HTTP_CLIENT_IP']))
    	{
    		$ip = $_SERVER['HTTP_CLIENT_IP'];
    	}else if(!empty($_SERVER['HTTP_X_FORWARDED_FOR']))
    	{
    		$ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
    	}
    	else
    	{
    		$ip = $_SERVER['REMOTE_ADDR'];
    	}
    	return $ip;
    }
    

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