Passing DataTable parameter to funcion

function getbuilddata {      $dt = new-object system.data.datatable      $column1 = new-object system.data.datacolumn 'id'      $column2 = new-object system.data.datacolumn 'name'      $dt.columns.add($column1)      $dt.columns.add($column2)      return , $dt  }    function addrow($dt, [string]$parentid, [int]$level, $item, $incurrentpath)  {  		$row = $dt.newrow()  		$row.id = [guid]::newguid()      	$row.name = $item.title  		$dt.rows.add($row)  		return $row.id  }      function adddatarecursive($dt, $items, [string]$parentid, [int]$level)   {  	foreach ($item in $items)  	{  		$id = addrow $dt, $parentid, $level, $item, $false	  		if ($item.childnodes.count -gt 0)  		{  			$level = $level + 1  			adddatarecursive $dt, $item.childnodes, $row.id, $level  		}  	}  }    # generate datatable  [system.data.datatable] $builddata = getbuilddata  adddatarecursive $builddata $rootnode.childnodes "" 1    

then first call adddatarecursive $builddata $rootnode.childnodes "" 1 
parameter $dt datatable inside function
adddatarecursive call  addrow $dt variable system.array type , have: : method invocation failed because [system.object[]] doesn't contain method named 'newrow'.

then comment line 

$id = addrow $dt, $parentid, $level, $item, $false

also recursive call adddatarecursive $dt, $item.childnodes, $row.id, $level gives error. because $dt  is system.array type
whats wrong?

try following code below. copy is. should see result guid value. tested on powershell ise 4.

function getbuilddata { 	$dt = new-object system.data.datatable 	$column1 = new-object system.data.datacolumn 'id' 	$column2 = new-object system.data.datacolumn 'name' 	$dt.columns.add($column1) 	$dt.columns.add($column2)      	return ,$dt }  function addrow { 	param( 		$dt, 		[string] $parentid, 		[int] $level, 		$item, 		$incurrentpath 	) 	 	$row = $dt.newrow() 	$row.id = [guid]::newguid() 	$row.name = $item.title 	$dt.rows.add($row) 	return $row.id }   # generate datatable $builddata = [system.data.datatable](getbuilddata) $id = addrow $builddata "" 1 "" "" $id

let me know if you're successful.

Windows Server  >  Windows PowerShell