Create file download option using ASP.NET and C#

Create file download using ASP.Net

This post is for creation of download link using ASP.NET and C# Technology. A download link is very much necessary to create a typical web application.

Step 1) Copy and paste the below code in your ASP.Net page. Change the Directory location according to your server setting.

using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.IO;

public partial class File_download : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {

        DirectoryInfo directory = new DirectoryInfo("D:\\files");

        int counter = 0;

        foreach (FileInfo file in directory.GetFiles())

        {

            HyperLink link = new HyperLink();

            link.ID = "Link" + counter++;

            link.Text = file.Name;

            link.NavigateUrl = "download.aspx?name=" + file.Name;

            Page.Controls.Add(link);

            Page.Controls.Add(new LiteralControl("<br/>"));

        }

    }

}

Step 2)Create another ASP.NET file and give filename download.aspx and put below code into it.

using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

public partial class download : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {

        string fileName = Request.QueryString["name"].ToString();

        Response.ContentType = "application/octet-stream";

        Response.AddHeader("Content-Disposition", "attachment;filename=" + fileName);

        Response.TransmitFile("D:\\files\\" + fileName);

        Response.End();

    }

}