All posts tagged directory

Get all files in Directory and Sub directory using Asp.net is easy task we have to use this name space using System.IO;

And Call the GetFiles() function to get all files from the directory we use MapPath(“.”) to get the root folder and show all files in side it. If you want to show a perticular folder’s file then change (“.”) to (“foldername”) then it will show all the files in side the folder.

  public void GetFiles()
 {
      string    path =    MapPath(".");
        if (File.Exists(path))

        {
            // File path
            ProcessFile(path);
        }

 else if (Directory.Exists(path))

{
            // This path is a directory

            ProcessDirectory(path);

        }

    }
  
    // Process all files in the directory passed in, recurse on any directories

    // that are found, and process the files they contain.

    public void ProcessDirectory(string targetDirectory)
{
        // Process the list of files found in the directory.

        string[] fileEntries = Directory.GetFiles(targetDirectory);

        foreach (string fileName in fileEntries)

            ProcessFile(fileName);

         // Recurse into subdirectories of this directory.

        string[] subdirectoryEntries = Directory.GetDirectories(targetDirectory);

        foreach (string subdirectory in subdirectoryEntries)

            ProcessDirectory(subdirectory);

    }

    // Insert logic for processing found files here.

    public void ProcessFile(string path)

    {

        FileInfo fi = new FileInfo(path);

        Response.Write("Path: " + path + "<br/>");
     

    }

 

The above GetFiles() method print this

Path: H:\CATEGORY WISE CODE LIBRARY ASP.NET\SEO\ASP\About.aspx
Path: H:\CATEGORY WISE CODE LIBRARY ASP.NET\SEO\ASP\About.aspx.cs
Path: H:\CATEGORY WISE CODE LIBRARY ASP.NET\SEO\ASP\About.aspx.designer.cs
Path: H:\CATEGORY WISE CODE LIBRARY ASP.NET\SEO\Contact.aspx.cs
Path: H:\CATEGORY WISE CODE LIBRARY ASP.NET\SEO\Contact.aspx.designer.cs
Path: H:\CATEGORY WISE CODE LIBRARY ASP.NET\SEO\Default.aspx
Path: H:\CATEGORY WISE CODE LIBRARY ASP.NET\SEO\Default.aspx.cs

 

If you need to get a list of files from some folder you need to use DirectoryInfo class from System.IO namespace. One sample approach that shows all gif images from Images folder in ListBox control named lstFiles, could be like this:

[ C# ]

// We need this namespace
using System.IO;
 
public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        // We'll read all files from Images subfolder
        DirectoryInfo diFiles = new DirectoryInfo(Server.MapPath("~/Images/"));
        // Takes all .gif images,
        // You can set some other filter or
        // *.* for all files
        lstFiles.DataSource = diFiles.GetFiles("*.gif");
        // bind data to list box
        lstFiles.DataBind();
    }
}

[ VB.NET ]

' We need this namespace
Imports System.IO
 
 
Partial Class _Default
    Inherits System.Web.UI.Page
 
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        ' We'll read all files from Images subfolder
        Dim diFiles As DirectoryInfo = New DirectoryInfo(Server.MapPath("~/Images/"))
        ' Takes all .gif images,
        ' You can set some other filter or
        ' *.* for all files
        lstFiles.DataSource = diFiles.GetFiles("*.gif")
        ' bind data to list box
        lstFiles.DataBind()
    End Sub
End Class

Bellow is the code for loop throught all files in a folder.

// How much deep to scan. (of course you can also pass it to the method)
const int HowDeepToScan=4;

public static void ProcessDir(string sourceDir, int recursionLvl) 
{
  if (recursionLvl<=HowDeepToScan)
  {
    // Process the list of files found in the directory.
    string [] fileEntries = Directory.GetFiles(sourceDir);
    foreach(string fileName in fileEntries)
    {
       // do something with fileName
       Console.WriteLine(fileName);
    }

    // Recurse into subdirectories of this directory.
    string [] subdirEntries = Directory.GetDirectories(sourceDir);
    foreach(string subdir in subdirEntries)
       // Do not iterate through reparse points
       if ((File.GetAttributes(subdir) &
            FileAttributes.ReparsePoint) !=
                FileAttributes.ReparsePoint)

            ProcessDir(subdir,recursionLvl+1);
  }
}

To create directory on web server with ASP.NET server side code, you can use this code:

[ C# ]

using System;
using System.Data;
using System.Configuration;
// We need this namespace to create directory
using System.IO;
 
public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        string NewDir = Server.MapPath("New Folder");
        // Call function for creating a directory
        MakeDirectoryIfExists(NewDir);
    }
 
    private void MakeDirectoryIfExists(string NewDirectory)
    {
        try
        {
            // Check if directory exists
            if (!Directory.Exists(NewDirectory))
            {
                // Create the directory.
                Directory.CreateDirectory(NewDirectory);
            }
        }
        catch (IOException _ex)
        {
            Response.Write(_ex.Message);
        }
    }
}

[ VB.NET ]

' We need this namespace to make a directory
Imports System.IO
 
Partial Class _Default
    Inherits System.Web.UI.Page
 
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Dim NewDir As String = Server.MapPath("New Folder")
        ' Call function for creating a directory
        MakeDirectoryIfExists(NewDir)
    End Sub
 
    Private Sub MakeDirectoryIfExists(ByVal NewDirectory As String)
        Try
            ' Check if directory exists
            If Not Directory.Exists(NewDirectory) Then
                ' Create the directory.
                Directory.CreateDirectory(NewDirectory)
            End If
        Catch _ex As IOException
            Response.Write(_ex.Message)
        End Try
    End Sub