Introduction:
In this article I am going to explain how to
delete certain type of files i.e. all the files with specific extension (for
example .jpg file or .png file or .docx file etc) from specific directory and its subdirectories recursively
in asp.net using both C# and VB language.
In previous examples i explained How to validate,upload,crop and store image in folder in asp.net using jQuery and Delete all files and subdirectories from directory in Asp.net and jQuery AJAX JSON example to call Asp.net server side function or method without any post back and Load more records in Gridview on button click from sql server table and jQuery to calculate Running Total of Textbox values and show in Label or TextBox control
Implementation: Let’s create an example to
demonstrate the concept.
Create a folder/directory with name “MyContents” in root directory. Add some
files and folders in this folder. Also place some files and folders in sub
folders. Now let’s say we want to delete all “.jpg“ files from “MyContent” folders
and its sub folders.
Asp.Net C# Section
HTML Source
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="btnDelete" runat="server" Text="Delete" OnClick="btnDelete_Click" />
</div>
</form>
</body>
</html>
Asp.Net
C# code to delete all
files and subdirectories from directory
In
code behind file e.g. default.aspx.cs write the following:
First
of all include following required namespace:
using System.IO;
Then write the code as:
protected void btnDelete_Click(object sender, EventArgs e)
{
DirectoryInfo directory = new DirectoryInfo(Server.MapPath("~/MyContents/"));
EmptyFolder(directory);
}
private void EmptyFolder(DirectoryInfo directory)
{
foreach (FileInfo file in directory.GetFiles())
{
if
(file.Extension.ToLower().Equals(".jpg"))
{
file.Delete();
}
}
foreach (DirectoryInfo subdirectory in directory.GetDirectories())
{
EmptyFolder(subdirectory);
}
}
Asp.Net VB Section
HTML Source
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="btnDelete" runat="server" Text="Delete" />
</div>
</form>
</body>
</html>
Asp.Net
VB code to delete all
files and subdirectories from directory
In
code behind file e.g. default.aspx.vb write the following:
First
of all include following required namespace:
Imports System.IO
Then write the code as:
Protected Sub btnDelete_Click(sender As Object, e As EventArgs) Handles btnDelete.Click
Dim directory As New DirectoryInfo(Server.MapPath("~/MyContents/"))
EmptyFolder(directory)
End Sub
Private Sub EmptyFolder(directory As DirectoryInfo)
For Each file As FileInfo In directory.GetFiles()
If
file.Extension.ToLower().Equals(".jpg") Then
file.Delete()
End If
Next
For Each subdirectory As DirectoryInfo In directory.GetDirectories()
EmptyFolder(subdirectory)
Next
End Sub
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