C # Implementation of listing all subdirectories and files under the directory program (with ideas)

Program to burn their own data into a lot of CDs, I found it hard to find my own files on which disc I needed, so I wrote a program in Visual Studio.NET to list all the subdirectories and files in the directory to make it easier for me to list all the file information on the CD that I burned.

The main algorithm of this program is recursion, the main function is as follows:

Recursively lists all files and subdirectories under the directory

public void Listfiles (FileSystemInfo fileinfo)

{

if (! FileInfo. Exists) return;

DirectoryInfo dirinfo = FileInfo as DirectoryInfo;

if (Dirinfo = null) return; Not a directory

indent++;//indent plus One

FileSystemInfo [] files = dirinfo. Getfilesysteminfos ();

for (int i=0 I traverses all files, subdirectories in directory)

{

FileInfo file = Files[i] as FileInfo;

if (file!= null)//is a file

{

this.richtextbox1.text+= (Writespace (indent) + "| |" +

File. Name + "\ T" + converttokbyte (file. Length) + "\ r");

}

else//is a directory

{

this.richtextbox1.text+= (Writespace (Indent) + "+" +files[i]. Fullname+ "\ r");

Listfiles (Files[i]); Recursive calls to subdirectories

}

}

indent--;//indent minus One

}

The design interface of the program is shown in the following illustration:


Control has two button controls Btnselect and Btnsave (used to select directories and save files, respectively); a RichTextBox control (displays the results), A FolderBrowserDialog control (select directory) and a SaveFileDialog control (choose Save File Path).

The interface of the program after the operation is shown in the following illustration:







The complete code for the program is as follows: (where I added the red)

Using System;

Using System.Drawing;

Using System.Collections;

Using System.ComponentModel;

Using System.Windows.Forms;

Using System.Data;

Using System.Globalization;

Using System.IO;



Namespace Listfile_windows

{

///

Summary description of the Form1.

///

public class Form1:System.Windows.Forms.Form

{

Private System.Windows.Forms.RichTextBox RichTextBox1;

public static int indent; Indent value

Private System.Windows.Forms.Button Btnselect;

Private System.Windows.Forms.Button btnsave;

Private System.Windows.Forms.FolderBrowserDialog FolderBrowserDialog1;

Private System.Windows.Forms.SaveFileDialog SaveFileDialog1;

///

The required designer variable.

///

Private System.ComponentModel.Container components = null;



Public Form1 ()

{

//

Required for Windows Forms Designer support

//

InitializeComponent ();



//

TODO: Add any constructor code after the InitializeComponent call

//

}



///

Clean up all resources that are in use.

///

protected override void Dispose (bool disposing)

{

if (disposing)

{

if (Components!= null)

{

Components. Dispose ();

}

}

Base. Dispose (disposing);

}



Code generated #region the Windows forms Designer

///

Designer supports required methods-do not use the Code editor to modify

The contents of this method.

///

private void InitializeComponent ()

{

This.richtextbox1 = new System.Windows.Forms.RichTextBox ();

This.btnselect = new System.Windows.Forms.Button ();

This.btnsave = new System.Windows.Forms.Button ();

This.folderbrowserdialog1 = new System.Windows.Forms.FolderBrowserDialog ();

This.savefiledialog1 = new System.Windows.Forms.SaveFileDialog ();

This. SuspendLayout ();

//

RichTextBox1

//

This.richTextBox1.Location = new System.Drawing.Point (0, 0);

This.richTextBox1.Name = "RichTextBox1";

This.richTextBox1.Size = new System.Drawing.Size (528, 400);

This.richTextBox1.TabIndex = 0;

This.richTextBox1.Text = "";

//

Btnselect

//

This.btnSelect.Location = new System.Drawing.Point (112, 424);

This.btnSelect.Name = "Btnselect";

This.btnSelect.TabIndex = 1;

This.btnSelect.Text = "Select Directory";

This.btnSelect.Click + = new System.EventHandler (This.btnselect_click);

//

Btnsave

//

This.btnSave.Location = new System.Drawing.Point (320, 424);

This.btnSave.Name = "Btnsave";

This.btnSave.TabIndex = 2;

This.btnSave.Text = "Save File";

This.btnSave.Click + = new System.EventHandler (This.btnsave_click);

//

Form1

//

This. AutoScaleBaseSize = new System.Drawing.Size (6, 14);

This. ClientSize = new System.Drawing.Size (528, 461);

This. Controls.Add (This.btnsave);

This. Controls.Add (This.btnselect);

This. Controls.Add (This.richtextbox1);

This. Name = "Form1";

This. Text = "Form1";

This. ResumeLayout (FALSE);



}

#endregion



///

The main entry point for the application.

///

[STAThread]

static void Main ()

{

Application.Run (New Form1 ());

}



Recursively lists all files and subdirectories under the directory

public void Listfiles (FileSystemInfo fileinfo)

{

if (! FileInfo. Exists) return;

DirectoryInfo dirinfo = FileInfo as DirectoryInfo;

if (Dirinfo = null) return; Not a directory

indent++;//indent plus One

FileSystemInfo [] files = dirinfo. Getfilesysteminfos ();

for (int i=0 I traverses all files, subdirectories in directory)

{

FileInfo file = Files[i] as FileInfo;

if (file!= null)//is a file

{

this.richtextbox1.text+= (Writespace (indent) + "| |" +

File. Name + "\ T" + converttokbyte (file. Length) + "\ r");

}

else//is a directory

{

this.richtextbox1.text+= (Writespace (Indent) + "+" +files[i]. Fullname+ "\ r");

Listfiles (Files[i]); Recursive calls to subdirectories

}

}

indent--;//indent minus One

}



Controls the indentation space, N is the number of spaces

public string writespace (int n)

{

String Strspace= "";

for (int i=1;i<=n;i++)

strspace+= "";

return strspace;

}



Show number of file bytes

public string Converttokbyte (Long len)

{

float Val;

NumberFormatInfo mynfi = new NumberFormatInfo ();

Mynfi.numberdecimaldigits=1; Show a Decimal



if (len/1024==0)

Return Len. ToString () + "byte";

if (len/1024/1024==0)

{

Val= (float) len/1024;

Return Val. ToString ("N", Mynfi) + "K-byte";

}

Val= (float) len/1024/1024;

Return Val. ToString ("N", Mynfi) + "M byte";



}



private void Btnselect_click (object sender, System.EventArgs e)

{

indent=0;//Indent Clear Zero

This.richTextBox1.ResetText (); Empty the original text in the text box

Select a directory

if (This.folderBrowserDialog1.ShowDialog () ==dialogresult.ok)

{

Listfiles (New DirectoryInfo (This.folderBrowserDialog1.SelectedPath));

}

}



private void Btnsave_click (object sender, System.EventArgs e)

{

if (This.saveFileDialog1.ShowDialog () ==dialogresult.ok)

{

Save the result file

This.richTextBox1.SaveFile (Savefiledialog1.filename,richtextboxstreamtype.plaintext);



}

}



}

}