C#winform TreeView Simple Folder manager view files under Folders, files under sub-files

1 Viewing the contents of a folder

2 UI

3 Code

1 usingSystem;2 usingSystem.Collections.Generic;3 usingSystem.ComponentModel;4 usingSystem.Data;5 usingSystem.Drawing;6 usingSystem.IO;7 usingSystem.Linq;8 usingSystem.Text;9 usingSystem.Threading.Tasks;Ten usingSystem.Windows.Forms; One  A namespaceWindowsFormsApplication2 - { -      Public Partial classForm1:form the     { -          PublicForm1 () -         { - InitializeComponent (); +         } -  +         Private voidForm1_Load (Objectsender, EventArgs e) A         { at             stringPath =@"l:\ folders created with programs"; -  -             //The recursion of the function is used. - showeveryfile (path, treeview1.nodes);  -         } -  in         Private voidShoweveryfile (stringpath, treenodecollection nodes) -         { to             //dires Storage is the absolute path to the folder +             string[] Dires =directory.getdirectories (path); -              for(inti =0; I < Dires. Length; i++) the             { *                                        //the name of the folder $                 varnewnodes=nodes. ADD (Path.getfilename (dires[i));Panax Notoginseng                 //recursion of the function, appeared - Showeveryfile (Dires[i], newnodes.nodes); the             } +  A             //when a function is applied to the deepest depths, it is called when it is ready to come out one layer at a time . the             string[] files =directory.getfiles (path); +              for(inti =0; I < files. Length; i++) -             { $ nodes. ADD (Path.getfilename (files[i)); $             } -         } -     } the}

4 effects

See how the Iteration function works

1. Set a breakpoint on the line of code that calls the function that needs to be iterated
2, F5 run to the breakpoint
3, F11 a line of code, a row of the run.
4, observe the local Variables window and record the relevant parameters.

The iterative function is one layer deep, deep into the innermost layer, and then outward.

C#winform TreeView Simple Folder manager view files under Folders, files under sub-files