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04 April, 2013

Delete a File from Asp.net Uploaded Folder using C#, VB.NET


Here I will explain how to delete a file from a folder in 
asp.net using c# and vb.net.

In previous articles I explained 
Difference between sessionstate and viewstate, Highlight gridview rows on mouseover in jQuery, and many articles relating to asp.net, c#,vb.net and JQuery. Now I will explain how to delete a file from a folder in asp.net using c# and vb.net.

To implement this functionality we need to write the following code like as shown below

string FileName ="test.txt";
string Path = "E:\\" + FileName;
FileInfo file = new FileInfo(Path);
if (file.Exists)
If you want to see it in complete example check below code

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>how to delete a file from a folder in asp.net using c#</title>
<form id="form1" runat="server">
<td><b>Enter File Name to Delete:</b></td>
<td><asp:TextBox ID="txtName" runat="server" /></td>
<tr><td></td><td><asp:Button ID="btnDelete" runat="server" Text="Delete File" /> </td></tr>
<tr><td colspan="2"><asp:Label ID="lblResult" runat="server"/></td></tr>
Now open code behind file and add following namespaces

C# Code

using System;
using System.Drawing;
using System.IO;
After that write the following code in code behind

protected void btnDelete_Click(object sender, EventArgs e)
string filename =txtName.Text;
string path = "E:\\" + filename;
FileInfo file = new FileInfo(path);
if (file.Exists)
lblResult.Text = filename + " file deleted successfully";
lblResult.ForeColor = Color.Green;
lblResult.Text = filename + " file not exists in filepath";
lblResult.ForeColor = Color.Red;

Imports System.Drawing
Imports System.IO
Partial Class Default2
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)

End Sub
Protected Sub btnDelete_Click(ByVal sender As Object, ByVal e As EventArgs)
Dim filename As String = txtName.Text
Dim path As String = "E:\" & filename
Dim file As New FileInfo(path)
If file.Exists Then
lblResult.Text = filename & " file deleted successfully"
lblResult.ForeColor = Color.Green
lblResult.Text = filename & " file not exists in filepath"
lblResult.ForeColor = Color.Red
End If
End Sub
End Class

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