Manage Files 3D (Display, Download & Delete) From a Folder in ASP.Net

Rahul Saxena
10y
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This article shows how to show files from a folder in a Grid View in ASP.NET C#. I am also showing how to download and delete a file from a folder.

The following is my aspx code:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Manage Files (Show, Download & Delete)</title>
</head>
<body>
<form id="form1" runat="server">
<table cellpadding="10" cellspacing="10" style="border: solid 10px red; background-color: Skyblue;"
width="90%" align="center">
<tr>
<td style="height: 35px; background-color: Yellow; font-weight: bold; font-size: 16pt;
font-family: Times New Roman; color: Red" align="center">
Manage Files (Show, Download & Delete) of A Folder
</td>
</tr>
<tr>
<td>
<asp:GridView ID="GridViewShowFiles" runat="server" AutoGenerateColumns="False" EmptyDataText="No files uploaded"
CellPadding="4" ForeColor="#333333" GridLines="None" Width="100%" HeaderStyle-HorizontalAlign="Left">
<RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
<Columns>
<asp:BoundField DataField="Text" HeaderText="File Name" />
<asp:TemplateField>
<ItemTemplate>
<asp:LinkButton ID="lnkDownload" Text="Download" CommandArgument='<%# Eval("Value") %>'
runat="server" OnClick="DownloadFile"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:LinkButton ID="lnkDelete" Text="Delete" CommandArgument='<%# Eval("Value") %>'
runat="server" OnClick="DeleteFile" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
<FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
<SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
<HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<EditRowStyle BackColor="#999999" />
<AlternatingRowStyle BackColor="White" ForeColor="#284775" />
</asp:GridView>
</td>
</tr>
</table>
</form>
</body>
</html>

My aspx.cs code:

using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.IO;
using System.Collections.Generic;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
GettAllFiles();
}
}
protected void GettAllFiles()
{
if (System.IO.Directory.Exists(Server.MapPath("~/MyDirectory/")))
{
string[] filePaths = Directory.GetFiles(Server.MapPath("~/MyDirectory/"));
List<ListItem> files = new List<ListItem>();
foreach (string filePath in filePaths)
{
files.Add(new ListItem(Path.GetFileName(filePath), filePath));
}
GridViewShowFiles.DataSource = files;
GridViewShowFiles.DataBind();
}
else
{
GridViewShowFiles.DataSource = null;
GridViewShowFiles.DataBind();
}
}
protected void DownloadFile(object sender, EventArgs e)
{
string filePath = (sender as LinkButton).CommandArgument;
Response.ContentType = ContentType;
Response.AppendHeader("Content-Disposition", "attachment; filename=" + Path.GetFileName(filePath));
Response.WriteFile(filePath);
Response.End();
}
protected void DeleteFile(object sender, EventArgs e)
{
string filePath = (sender as LinkButton).CommandArgument;
File.Delete(filePath);
Response.Redirect(Request.Url.AbsoluteUri);
}
}