File Upload/ Download using ASP.NET

Question

User1978547804 posted

Hello,

I'm planning to use ASP.NET's FileUpload control to a server's file system as suggested in the link mentioned below:

https://docs.microsoft.com/en-us/aspnet/web-forms/overview/data-access/working-with-binary-files/uploading-files-cs

However, I do not see any way of then downloading the uploaded files to the server. How do I then download those files? 

Basically I would like to upload various files, and provide links to download each of them.

The files could be in either .DOCX or .PDF formats.

Thanks in advance,

Jy

Answer 1

User-1174608757 posted

Hi JY_2013,

According to your description, both submit and download are unique.You should write code to download files. For example , if you want to download a mp4 file when click the button.You should the virtual path of the video file and write as below:

protected void Button2_Click(object sender, EventArgs e)
        {
            Response.ContentType = "Application/mp4";
            Response.AppendHeader("Content-Disposition", "attachment; filename=SampleVideo.mp4");
            Response.TransmitFile(Server.MapPath(@"~/SampleVideo.mp4"));
            Response.End();

        }

Here is the link for downloading file.I hope it could help you.

https://www.c-sharpcorner.com/article/downloading-files-in-asp-net-using-c-sharp/

https://docs.microsoft.com/en-us/dotnet/api/system.net.webclient.downloadfile?redirectedfrom=MSDN&view=netframework-4.7.2#System_Net_WebClient_DownloadFile_System_String_System_String_

https://stackoverflow.com/questions/27974374/returning-a-downloadable-file-using-a-stream-in-asp-net-web-forms

Best Regards

Wei Zhang