how to make a treeview like the ones in Windows folder explorer in c#

Hi,

 

Please refer here

 

https://docs.microsoft.com/en-us/dotnet/framework/winforms/controls/creating-an-explorer-style-interface-with-the-listview-and-treeview

 

https://www.codeproject.com/Articles/21248/A-Simple-WPF-Explorer-Tree

 

Hope this helps