Tags | how to Upload and download file in asp.net, upload and download file in asp.net, code to upload and download files in asp.net, source code for file upload and download in asp.net.
How to upload and download file in asp.net
Uploading and downloading files are the most common methods for any website or asp.net web application. The FileUpload web server control allows you to provide users with a way to send a file from their computer to the server.
Note: The maximum size file that can be uploaded depends on the value of the MaxRequestLength configuration setting. If users attempt to upload a file that is larger than the maximum, the upload fails.
Code to upload and download files in asp.net
In this C# ASP.Net tutorial I will demonstrates how to upload and download files from folder in asp.net using c#. Find the below source code for file upload and download in asp.net :-
Save/Upload files in folder and download files from folder system.
using System;
using System.IO;
public partial class _Default : System.Web.UI.Page
{
string filename = string.Empty;
protected void Page_Load(object sender, EventArgs e)
{ }
//To upload file
protected void OnLnkUpload_Click(object sender, EventArgs e)
{
filename = Path.GetFileName(fileUpload1.PostedFile.FileName);
fileUpload1.SaveAs(Server.MapPath("Files/" + filename));
lblFilename.Text = "Files/" + fileUpload1.FileName;
lblMessage.Text = "File uploaded sucessfully to the folder: -" + " Files/" + fileUpload1.FileName;
}
// To download uplaoded file
protected void OnLnkDownload_Click(object sender, EventArgs e)
{
if (lblFilename.Text != string.Empty)
{
if (lblFilename.Text.EndsWith(".txt"))
{
Response.ContentType = "application/txt";
}
else if (lblFilename.Text.EndsWith(".pdf"))
{
Response.ContentType = "application/pdf";
}
else if (lblFilename.Text.EndsWith(".docx"))
{
Response.ContentType = "application/docx";
}
else
{
Response.ContentType = "image/jpg";
}
string filePath = lblFilename.Text;
Response.AddHeader("Content-Disposition", "attachment;filename=\"" + filePath + "\"");
Response.TransmitFile(Server.MapPath(filePath));
Response.End();
}
}
}
Download ASP Net C# Source Code
References | https://msdn.microsoft.com/en-us/library/ms227669.aspx
The following example shows how to work with an uploaded file. The code checks the file name extension of the uploaded file against a hard-coded list of allowed file name extensions and rejects all other types of files.
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