functions/other/onedrive/Invoke-EXRFolderPicker.ps1

function Invoke-EXRFolderPicker
{
    [CmdletBinding()]
    param (
        [Parameter(Position = 0, Mandatory = $false)]
        [string]
        $MailboxName,
        
        [Parameter(Position = 1, Mandatory = $false)]
        [psobject]
        $rootFolder,
        
        [Parameter(Position = 2, Mandatory = $false)]
        [psObject]
        $Folders,
        
        [Parameter(Position = 3, Mandatory = $false)]
        [string]
        $pickerType,
        
        [Parameter(Position = 4, Mandatory = $false)]
        [switch]
        $ShowFolderSize
    )
    Begin
    {
        if($AccessToken -eq $null)
        {
            $AccessToken = Get-ProfiledToken -MailboxName $MailboxName  
            if($AccessToken -eq $null){
                $AccessToken = Get-EXRAccessToken -MailboxName $MailboxName       
            }                 
        }
         if([String]::IsNullOrEmpty($MailboxName)){
            $MailboxName = $AccessToken.mailbox
        } 
        [void][System.Reflection.Assembly]::LoadWithPartialName("System.Drawing")
        [void][System.Reflection.Assembly]::LoadWithPartialName("System.windows.forms")
        $Treeinfo = @{ }
        $TNRoot = new-object System.Windows.Forms.TreeNode("Root")
        $TNRoot.Name = "Mailbox"
        $TNRoot.Text = "Mailbox - " + $MailboxName
        foreach ($ffFolder in $Folders)
        {
            #Process folder here
            switch ($pickerType)
            {
                "onedrive" {
                    $ParentFolderId = $ffFolder.parentReference.Id
                    $folderName = $ffFolder.Name
                }
                "mail" {
                    $ParentFolderId = $ffFolder.parentFolderId
                    $folderName = $ffFolder.displayName
                    if ($ShowFolderSize)
                    {
                        $folderName = $ffFolder.displayName + " (" + [math]::round($ffFolder.singleValueExtendedProperties[0].value /1Mb, 0) + " mb)"
                    }
                }
            }
            $TNChild = new-object System.Windows.Forms.TreeNode($ffFolder.Name)
            $TNChild.Name = $folderName
            $TNChild.Text = $folderName
            $TNChild.tag = $ffFolder
            
            
            if ($ParentFolderId -eq $rootFolder.Id)
            {
                [void]$TNRoot.Nodes.Add($TNChild)
                $Treeinfo.Add($ffFolder.Id.ToString(), $TNChild)
            }
            else
            {
                $pfFolder = $Treeinfo[$ParentFolderId]
                [void]$pfFolder.Nodes.Add($TNChild)
                if ($Treeinfo.ContainsKey($ffFolder.Id) -eq $false)
                {
                    $Treeinfo.Add($ffFolder.Id, $TNChild)
                }
            }
        }
        $Script:clickedFolder = $null
        $objForm = New-Object System.Windows.Forms.Form
        $objForm.Text = "Folder Select Form"
        $objForm.Size = New-Object System.Drawing.Size(600, 600)
        $objForm.StartPosition = "CenterScreen"
        $tvTreView1 = new-object System.Windows.Forms.TreeView
        $tvTreView1.Location = new-object System.Drawing.Size(1, 1)
        $tvTreView1.add_DoubleClick({
                $Script:clickedFolder = $this.SelectedNode.tag
                $objForm.Close()
            })
        $tvTreView1.size = new-object System.Drawing.Size(580, 580)
        $tvTreView1.Anchor = "Top,left,Bottom"
        [void]$tvTreView1.Nodes.Add($TNRoot)
        $objForm.controls.add($tvTreView1)
        [void]$objForm.ShowDialog()
        return, $Script:clickedFolder
        
    }
}