Listing Folders in a Directory using asp.net and C#

Question

.aspx file:

<%@ Import Namespace="System.IO" %>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>Explorer</title>
</head>
<body>
<form id="form1" runat="server">
</form>
</body>
</html>

.CS file:

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Web;
 using System.Web.UI;
 using System.Web.UI.WebControls;
 using System.IO;

public partial class view2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
    string path = "~/";
    GetFilesFromDirectory(path);
}

private static void GetFilesFromDirectory(string DirPath)
{
         try
         {
             DirectoryInfo Dir = new DirectoryInfo(DirPath);
             FileInfo[] FileList = Dir.GetFiles("*.*", SearchOption.AllDirectories);
             foreach (FileInfo FI in FileList)
             {
                 Console.WriteLine(FI.FullName);
             }
         }
         catch (Exception ex)
         {
                Console.WriteLine(ex.Message);
         }
}

I want to list the folders in a particular directory but it continuously showing blank page.Can anybody tell what's the problem in the code.

score 15 · Accepted Answer · edited May 18 '11 at 19:16

15

Display directories and files on a blank page

// YourPage.aspx
<%@ Import Namespace="System.IO" %>
<html>
<body>
    <% foreach (var dir in new DirectoryInfo("E:\\TEMP").GetDirectories()) { %>
        Directory: <%= dir.Name %><br />

        <% foreach (var file in dir.GetFiles()) { %>
            <%= file.Name %><br />
        <% } %>
        <br />
    <% } %>
</body>
</html>

edited May 18 '11 at 19:16

Richard Marskell - Drackir

13,080
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answered May 18 '11 at 16:17

benwasd

1,342
10
18

Im trying to do something similar but i dont want to use a static path. Is there a way to get the application path? for example "~/Uploads/" and Uploads is a folder inside of my web project. I dont want to have this: "C://Visual Studio 2013/ projects/my project" etc – ThunD3eR Sep 08 '14 at 19:54
1

@Ra3IDeN yes, use `HttpContext.Current.Server.MapPath(StringPathInSolution)` , however as the path to your project is static and thus known you could remove it from the string? – LokizFenrir Jan 29 '15 at 08:06
it does not fetch files in my case – TheTechGuy Jul 20 '16 at 10:10
Correct! You are Pro! – toha Jan 20 '22 at 04:44

score 1 · Answer 2 · answered May 18 '11 at 15:36

1

Don't use Console.WriteLine() use Response.Write(). You're trying to write to the console in a web application.

answered May 18 '11 at 15:36

Richard Marskell - Drackir

13,080
3
33
54

I'm getting this error : An object reference is required for the non-static field, method, or property 'System.Web.UI.Page.Response.get' – Naresh May 18 '11 at 15:52
@ILLUMINATI7590: Oh, remove `static` from `private static void GetFilesFromDirectory(string DirPath)`. You don't need it in this case. – Richard Marskell - Drackir May 18 '11 at 15:52
Thank you It removed the error .But my web page is still showing nothing. – Naresh May 18 '11 at 15:56
@ILLUMINATI7590: Are you sure no errors are being thrown? Did you replace both instances of `Console.WriteLine()`? – Richard Marskell - Drackir May 18 '11 at 15:58
yes I replaced all instances and I still get nothing.Getting the page same as earlier. – Naresh May 18 '11 at 16:00
Try putting a break-point (assuming you're running from an IDE) in the `GetFilesFromDirectory` method and see if you can step into it (F11 while execution is paused at the break-point). – Richard Marskell - Drackir May 18 '11 at 16:02
In my oppinion Response.Write doesn't work at Page_Load/Pre_Init and such events. The Response will cleard bevor rendering aspx. – benwasd May 18 '11 at 16:08
I couldn't understand it.But can you help me in just displaying folders(not subfolders) in the way benjamin told. – Naresh May 18 '11 at 16:08
1

@ILLUMINATI7590: If this didn't work for you, and Benjamin's did, you should award the answer to him, not to me. I'm sure he'd be able to help you with his code. :) – Richard Marskell - Drackir May 18 '11 at 16:23

score 1 · Answer 3 · answered May 18 '11 at 15:38

Console.WriteLine will write to the console, not the web page contents you are returning. You need to add a container element to your ASPX page, probably a grid view or repeater, then add assign the file list from the code behind file (to the HTML element you added, use the runat='server' tag and assign it an ID, then reference it by ID name in the code).

benwasd · Answer 4 · 2011-05-18T16:03:49.267

1

Response.Write in a static codebehind method: DIRTY! In addition you did't control the position where you write. This a little bit cleaner...

// YourPage.aspx
<%@ Import Namespace="System.IO" %>
<html>
<body>
    <ul>
        <% foreach(var file in Directory.GetFiles("C:\\Temp", "*.*", SearchOption.AllDirectories)) { %>
        <li><%= file %></li>       
        <% } %>     
    </ul>
</body>
</html>

edited May 18 '11 at 16:03

answered May 18 '11 at 15:46

benwasd

1,342
10
18

1

You have your `
` and `

Richard Marskell - Drackir

May 18 '11 at 16:01

Thank you very much.I'm very new to coding. – Naresh May 18 '11 at 16:01

Please tell me this.I just want to display folders in a directory(not subfolders).In your code replacing Files with Directories giving every folder in it. – Naresh May 18 '11 at 16:11

score 0 · Answer 5 · edited Oct 30 '19 at 02:46

You can use Directory class

The first parameter is the path it can be relative or absolute
The second parameter for matching against the names of subdirectories in path. This parameter can contain a combination of valid literal and wildcard characters, but it doesn't support regular expressions.

/

//using System.IO; 
private void GetDirectories()
{
    DataTable dt = new DataTable();
    dt.Columns.Add("direction",typeof(string));
    try
    {
        string[] dirs = Directory.GetDirectories(@"yourpath", "*", SearchOption.AllDirectories);
        foreach (string dir in dirs)
        {
            dt.Rows.Add(dir);
        }
        if (dirs.Length <= 0)
        {
             lbl.text="your message"

        }

       rpt.DataSource = dt; //your repeater 
       rpt.DataBind(); //your repeater 
    }
    catch (Exception e)
    {
       lbl.text="your message"//print message assign it to label
    }
}

In the aspx page

   <asp:Label runat="server" ID="lbl"></asp:Label>
    <asp:Repeater ID="rpt" runat="server" ClientIDMode="AutoID">
        <ItemTemplate>
            <tr>
                <td><%#Eval("direction")%></td>

            </tr>
        </ItemTemplate>
    </asp:Repeater>

Listing Folders in a Directory using asp.net and C#

5 Answers5

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