PowerShell - Connect MS Dynamics CRM

## create crm connction function, call this function with arguments  OrganizationURL, UserName, Password
function Invoke-CRMConn {
    ## pass arguments OrganizationURL, UserName, Password
    [CmdletBinding()]
    param(
        [Parameter(Position=0, Mandatory=$true)] [string]$OrganizationURL,
        [Parameter(Position=1, Mandatory=$true)] [string]$UserName,
        [Parameter(Position=2, Mandatory=$true)] [string]$Password
    )

    ## get directory path
    $current_directory =  $(Get-Item ($MyInvocation.ScriptName)).DirectoryName
   
    ## load crm & xrm dll
    $xrm_dll = $current_directory + "/microsoft.xrm.sdk.dll"
    $crm_dll = $current_directory + "/microsoft.crm.sdk.proxy.dll"
    [void][System.Reflection.Assembly]::LoadFile($xrm_dll)
    [void][System.Reflection.Assembly]::LoadFile($crm_dll)
    [void][System.Reflection.Assembly]::LoadWithPartialName("system.servicemodel")

    ## create credentials
    $clientCredentials = new-object System.ServiceModel.Description.ClientCredentials
    $clientCredentials.UserName.UserName = $UserName
    $clientCredentials.UserName.Password = $Password
   
    ## create  organization service proxy 
    $service = new-object Microsoft.Xrm.Sdk.Client.OrganizationServiceProxy($OrganizationURL, $null, $clientCredentials, $null)
   
    ## use default crm time out or set 5 minutes of timeout.
    #$service.Timeout = new-object System.Timespan(0, 5, 0)

    ## return service
    return $service
}

## test the service using who i am request
$service1 = Invoke-CRMConn -OrganizationURL "https://dns.com/XRMServices/2011/Organization.svc" -UserName 'test@dns.com' -Password ABC123!@#'
$request = new-object Microsoft.Crm.Sdk.Messages.WhoAmIRequest
$service1.Execute($request)

<#
UserId             : 123ddfa0-9534-f234-8780-78900568c2fc0
BusinessUnitId : 456a043cf-0c34-e234-878c-78900568c6c1c
OrganizationId : 7895b3c2-0c34f-e234-878c-7890568c6c1c
ResponseName   : WhoAmI
Results        : {[UserId, 123ddfa0-952d-f234-8780-7890568c6c1c], [BusinessUnitId, 456a043cf-0caf-e234-8780-7890568c6c1c],
                 [OrganizationId, 7895b3c2-0caf-e234-8780-7890568c6c1c]}
ExtensionData  : System.Runtime.Serialization.ExtensionDataObject
#>