File Upload in C#

Question

Hi,

I have uploaded 3 files using file upload with Specific User Id (Meaning User can have 3 image files or less than 3) in one folder

Now I want to download all 3 files at once by User Id (on page load or on button click event )

Is it possible ?

Thank You

Anoop Kumar Sharma · Answer

Hi Sushant, The best way is to zip all the multiple files and download the .zip file at the user end. https://www.aspsnippets.com/Articles/Zip-a-Folder-Directory-and-Download-in-ASPNet-using-C-and-VBNet.aspx Hope this will help you.

Praveen Mishra · Answer

Hi Sushant , You can easily download multiple files on pae load , here is the example code. protected void Page_Load(object sender, EventArgs e) { string folderPath = Server.MapPath("~/Files"); // Path to the folder containing the files if (Directory.Exists(folderPath)) { string[] files = Directory.GetFiles(folderPath); foreach (string filePath in files) { string fileName = Path.GetFileName(filePath); string downloadUrl = "DownloadFile.aspx?file=" + Server.UrlEncode(fileName); Response.Write(" " + fileName + " "); } } } Another Redirected Page Code of Page Load Are : protected void Page_Load(object sender, EventArgs e) { string fileName = Request.QueryString["file"]; if (!string.IsNullOrEmpty(fileName)) { string filePath = Server.MapPath("~/Files/" + fileName); if (File.Exists(filePath)) { Response.Clear(); Response.ContentType = "application/octet-stream"; Response.AppendHeader("Content-Disposition", "attachment; filename=" + fileName); Response.TransmitFile(filePath); Response.End(); } else { Response.Write("File not found."); } } else { Response.Write("Invalid file name."); } }

Sushant Torankar · Answer

I am trying like : string file1 = filepath + filename string file2 = filepath + filename string file3 = filepath + filename DownloadFile(file1); DownloadFile(file2); DownloadFile(file3); Using same Code in DownloadFile, only file name is different. But After downloading file1 and on downloading file2, I am getting "Server cannot clear headers after HTTP headers have been sent" error DownloadFIle code is : Response.Clear(); Response.ClearHeaders(); Response.Buffer = true; Response.BufferOutput = true; Response.AddHeaders("COntent-Disposition", string.Format("attachment; filename = {0}{1}", FileName, type)); Response.Charset = ""; Response.ContentType = "application/pdf"; Response.TransmitFIle(url); Response.Flush();

Jignesh Kumar · Answer

Hello Sushant, Please use this one which will help you out to download all files from specific folder, using System; using System.IO; class Program { static void Main() { string sourceDirectory = @"C:\SourceFolder"; // Specify the source directory path string destinationDirectory = @"C:\DestinationFolder"; // Specify the destination directory path // Get all files within the source directory string[] files = Directory.GetFiles(sourceDirectory); // Copy each file to the destination directory foreach (string file in files) { string fileName = Path.GetFileName(file); string destinationPath = Path.Combine(destinationDirectory, fileName); File.Copy(file, destinationPath, true); } Console.WriteLine("Files downloaded successfully."); } }

Mudzakkir Toha · Answer

of course that is possible to do. match your file using userId, or you can save file location to db with key userId. and then read the files using foreach.