#create class and object
Class Admailbox
 {
   [String]$name
   [int]$ID

 }
$AdmailboxObj= New-Object -TypeName Admailbox #1stway of creating object
 #2nd way --> [Admailbox]::new()

 #3rd way is using hashtable -->[Admailbox]@{name="",Total=""}
 $AdmailboxObj.id= 23
 $AdmailboxObj.name= "Satish"
 $AdmailboxObj | Export-Csv C:\Users\Administrator\Desktop\Newfolder\classobj.csv

 $AdmailboxObj.name | gm  #It will return string as type as we defined it in the beginning
 $AdmailboxObj.ID | gm #It will return Int as type as we defined it in the beginning

############################################################################################



#Two types of methods
1. Return some value(like above example)
2. Do not return any value (use void as return type)
##############################################################################################
# Take multiple services in Array and try to stop it. Create two files with success and error message.
$services = @("BITS","NG","Test")
foreach($service in $services)
{
 Stop-Service $service -ErrorAction Continue -ErrorVariable XYZ

  if($XYZ -ne $NULL)
   {
    "Not able to stop the $service because $($XYZ.categoryinfo.Reason)" | out-file C:\Users\Administrator\Desktop\Newfolder\error.txt -Append
    }
  else
   {
     "$service was successfully stopped" | out-file C:\Users\Administrator\Desktop\Newfolder\success.txt -Append
   }

 }



 # Use try Catch block below:

try
{


Stop-Service -name dinesh -ErrorAction Stop
}
catch
{

$_.exception.message | Out-File C:\catch.txt

}

Finally
{

}

#####################################TASK#####################################TASK##########################
Class Students {
    [string]$Fname
    [string]$Lname

    [string]FullName()

    {
     return "$($this.Fname)*$($this.Lname)"
    }
}

$student1=[Students]::new()

$student1.Fname="Dinesh"
$student1.Lname="Patil"
#$student1.Lname=3
#$student1.Fname=3
$student1.FullName()


Task1: what will be output for fullname for the below inputs? and why?

$student1.Fname="Dinesh"
$student1.Lname=3
$student1.FullName() = ?

$student1.Fname=3
$student1.Lname="Patil"
$student1.FullName() = ?


***Solution***
$student1.Fname="Dinesh"
$student1.Lname=3
$student1.FullName() = Dinesh*3

As the return type of the class is string it will return string with * in between as it is part of the string.

$student1.Fname=3
$student1.Lname="Patil"
$student1.FullName() = 3*Patil

same as above.

Without ""  in return statement it will give "Invalid cast from string to integer error".

Task:2----------
Create class calculator which will accept two inputs

$firstnumber
$secondnumber

add methods of add, subtract, multiply, divide .

make sure the input provided for the numbers should not be empty string or zero and should be integer only values of both should be between 1 to 10.

Check and select the attributes from the below help file
get-help about_Functions_Advanced_Param* -ShowWindow


Class calculator

{
 [int] $firstnumber
 [int] $secondnumber

  [int]Add()
    {
     return $this.firstnumber + $this.secondnumber

    }

  [int]Sub()
    {
     return $this.firstnumber-$this.secondnumber
    }

  [int]Mul()
    {
     return $this.firstnumber*$this.secondnumber
    }

  [float]Div()
    {
     return $this.firstnumber/$this.secondnumber
    }

}

$calc= New-Object -TypeName calculator

$firstnumber= Read-Host "Enter a number between 1 to 10"
$secondnumber= Read-Host "Enter a number between 1 to 10"

if($firstnumber.Length -gt 0 -and $firstnumber -gt 0 -and $firstnumber -lt 10 -and $secondnumber.Length -gt 0 -and $secondnumber -gt 0 -and $secondnumber -lt 10 )
  {

    $calc.firstnumber= $firstnumber
    $calc.secondnumber= $secondnumber
    $calc.Add()
    $calc.Sub()
    $calc.Mul()
    $calc.Div()

  }

else
  {

    Write-Host "Enter numbers between 1 and 10 only"

  }