ASP.NET Download Button Code in Asp.net
ASP.NET provides implicit object Response and its methods to download file from the server. We can use these methods in our application to add a feature of downloading file from the server to the local machine.
Here, we are creating an example that allows us to download file.
// Webform1.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="DownloadButton.WebForm1" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css" integrity="sha384-9aIt2nRpC12Uk9gS9baDl411NQApFmC26EwAOH8WgZl5MYYxFfc+NcPb1dKGj7Sk" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js" integrity="sha384-OgVRvuATP1z7JjHLkuOU7Xw704+h835Lr+6QL9UvYjZE3Ipu6Tp75j7Bh/kR0JKI" crossorigin="anonymous"></script>
<title></title>
</head>
<body style="background-color:#eeeeee;">
<form id="form1" runat="server" class="form-group" style="background-color:#ffffff; width:500px; height:auto; margin:50px auto 10px auto; padding:30px; border-radius:8px; overflow:hidden;box-shadow:0 2px 10px -3px #333;">
<div align="center" >
<p style="text-decoration-style:solid">Download the latest CORONAVIRUS status</p>
<asp:Button ID="Button1" runat="server" Text="Download" Class="form-control;btn btn-success" OnClick="Button1_Click" />
</div>
<asp:Label ID="Label1" runat="server"></asp:Label>
</form>
</body>
</html>
// Webform1.aspx.cs
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace DownloadButton
{
public partial class WebForm1 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
try
{
Response.ContentType = "Application/octect-stream";
Response.AppendHeader("Content-Disposition", "attachment; filename=Coronalive.xlsx");
Response.TransmitFile(Server.MapPath("~/Files/CoronaLive.xlsx"));
Response.End();
}
catch(Exception ex)
{
Response.Write(ex.Message);
}
}
}
}
// Design:-
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