PowerShell - Creating GUI for a simple search

The script below works in PowerShell but I am trying to create a search box with powershell Studio .. anyone able to help out ? either with powershell Studio or any other tool .. This is the first attempt .  

$UserName = Read-Host "Enter ID"
Get-Aduser $Username -Properties Name,homeDirectory,SamAccountName,CanonicalName |Select Name,homeDirectory,SamAccountName,CanonicalName


The Code below does not return anything ...

function OnApplicationLoad {
      #Note: This function is not called in Projects
      #Note: This function runs before the form is created
      #Note: To get the script directory in the Packager use: Split-Path $hostinvocation.MyCommand.path
      #Note: To get the console output in the Packager (Windows Mode) use: $ConsoleOutput (Type: System.Collections.ArrayList)
      #Important: Form controls cannot be accessed in this function
      #TODO: Add snapins and custom code to validate the application load
      
      return $true #return true for success or false for failure
}


function OnApplicationExit {
      #Note: This function is not called in Projects
      #Note: This function runs after the form is closed
      #TODO: Add custom code to clean up and unload snapins when the application exits
      
      $script:ExitCode = 0 #Set the exit code for the Packager
}

$form1_Load={
      #TODO: Initialize Form Controls here
      
}

$textbox1_TextChanged={
      #TODO: Place custom script here
      $UserName
}

$Search_Click={
      #TODO: Place custom script here
Get-Aduser $Username -Properties Name,homeDirectory,SamAccountName,CanonicalName |Select Name,homeDirectory,SamAccountName,CanonicalName
}