TreeView Help

[mattys]

I have statically created a TreeView with the TreeNode Editor.

Is it possible that when a node is selected to display an image within a picturebox?

Im having difficulty with this relationship.

Thanks in Advance

[jvierra]

It is not possible to understand what you are trying to ask. I recommend starting by reviewing the articles in this link to gain some understanding of how to work with forms and controls then try and ask your question again.

https://info.sapien.com/index.php/guis/ ... nistrators

[mattys]

This Function Loads the tree in my form

Code: [Select all] [Expand/Collapse] [Download] (Untitled.ps1)

1. function Load-FolderIntoTree
2. {
3.     param([System.Windows.Forms.TreeView]$TreeView, [string]$Directory)
4.    
5.     #Disable Drawing
6.     $TreeView.BeginUpdate()
7.    
8.     $TreeView.Nodes.Clear()
9.     $folderName = [System.IO.Path]::GetFileName($Directory)
10.    
11.    
12.     $root = $TreeView.Nodes.Add($folderName, $folderName, 1, 1)
13.     $root.ToolTipText = $Directory
14.     $subfolders = [System.IO.Directory]::GetDirectories($Directory)
15.    
16.     if(-not $script:HideSubFolders)
17.     {
18.         foreach($folder in $subfolders)
19.         {
20.             $folderName = [System.IO.Path]::GetFileName($folder)
21.             $node = $root.Nodes.Add($folderName, $folderName, 1, 1)
22.             $node.ToolTipText = $folder
23.         }
24.     }
25.    
26.     $files = [System.IO.Directory]::GetFiles($Directory)
27.     foreach($file in $files)
28.     {
29.         $fileName = [System.IO.Path]::GetFileName($file)
30.         $node = $root.Nodes.Add($fileName, $fileName, 0, 0)
31.         $node.ToolTipText = $file
32.        
33.     }
34.    
35.     $root.Expand()
36.    
37.     #Enable Drawing
38.     $treeview1.EndUpdate()
39. }

This event opens a folder in tree. The files in the folder(s) have .png image. When a user selects a file(img) in folder, I'd like the picturebox to display that image from that path($_.Node.ToolTipText)..

Code: [Select all] [Expand/Collapse] [Download] (Untitled.ps1)

1. $treeview1_NodeMouseDoubleClick=[System.Windows.Forms.TreeNodeMouseClickEventHandler]{
2. #Event Argument: $_ = [System.Windows.Forms.TreeNodeMouseClickEventArgs]
3.     if($_.Node.ImageIndex -eq 1)
4.     {
5.         #Folder - Open it
6.         Load-FolderIntoTree -TreeView $treeview1 -Directory $_.Node.ToolTipText
7.        
8.         #Open img to picturebox
9.         $picturebox1.image = $_.Node.ToolTipText ##<--This is where I get lost.
10.        
11.     }
12. }

Thank you

[jvierra]

I still cannot understand what you are asking. Tree nodes have an image property. Please look at the documentation to see how to use the image property and how to display and hide images. You cannot just add a PictureBox to a tree control.

If you are asking how to load an image file into a PictureBox then look at the control reference and it will show you how to do this.

[mattys]

O You mean like this, right?
$picturebox1.image = [System.Drawing.Image]::FromFile($treeview.selectednode.fullpath)

but I get this error- Exception calling "FromFile" with "1" argument(s): "The path is not of a legal form."

[jvierra]

Use the debugger to see what you have in the variable. "Fullpath" on a node is the nodes path and not the data path. Where did you store the file path?

[mattys]

The node path and path of desired image are the same.

Thanks for help, I will keep working on this task.

[jvierra]

Not according to the error. Did you look at it in the debugger? You can just use a Write-Host to output the value to see if it is correct.

[mattys]

You are right, it is coming up empty.

[jvierra]

Here is an old sampler I built a few years ago. It will help you understand how to navigate and reference nodes in a tree.