A web api for download file in Zipped

Question

i want to write a api for download all file in zipped , file path will come from database

Sandeep Kumar · Answer

still error showing

Amit Mohanty · Answer

Use client.GetByteArrayAsync(fileUrl) using (HttpClient client = new HttpClient()) { foreach (DataRow row in DtImage.Rows) { string fileUrl = row["FileUrl"].ToString(); string fileName = Path.GetFileName(fileUrl); byte[] fileBytes = client.GetByteArrayAsync(fileUrl); zip.AddEntry(fileName, fileBytes); } }

Sandeep Kumar · Answer

Error showing

Amit Mohanty · Answer

foreach (DataRow row in DtImage.Rows) { filePath = row["FileName"].ToString(); string localPath = new Uri(filePath).LocalPath; zip.AddFile(filePath, "Files"); } Change the above code with below code and try again: using (HttpClient client = new HttpClient()) { foreach (DataRow row in DtImage.Rows) { string fileUrl = row["FileUrl"].ToString(); string fileName = Path.GetFileName(fileUrl); byte[] fileBytes = client.GetByteArrayAsync(fileUrl); zip.AddEntry(fileName, fileBytes); } }

Sandeep Kumar · Answer

Please i dont't want in mvc I want Normal aso.net web api Pls go through my code [Authorize] [HttpPost] public HttpResponseMessage DownloadImage(JObject jsonParam) { HttpResponseMessage response = Request.CreateResponse(HttpStatusCode.OK); try { UserIdentity UI = new UserIdentity((ClaimsIdentity)User.Identity); var RoleId = Convert.ToInt32(UI.RoleId); var UserID = Convert.ToInt32(UI.UserID); PmsInsertUpdateData _KD = new PmsInsertUpdateData(); // var CD_Dtls = _KD.GetPmsUploadedImage(jsonParam); DataTable DtImage = _KD.DownloadImage(jsonParam); string filePath = string.Empty; using (ZipFile zip = new ZipFile()) { zip.AlternateEncodingUsage = ZipOption.AsNecessary; zip.AddDirectoryByName("Files"); foreach (DataRow row in DtImage.Rows) { filePath = row["FileName"].ToString(); string localPath = new Uri(filePath).LocalPath; zip.AddFile(filePath, "Files"); } //Set the Name of Zip File. string zipName = String.Format("Zip_{0}.zip", DateTime.Now.ToString("yyyy-MMM-dd-HHmmss")); using (MemoryStream memoryStream = new MemoryStream()) { //Save the Zip File to MemoryStream. zip.Save(memoryStream); //Set the Response Content. response.Content = new ByteArrayContent(memoryStream.ToArray()); //Set the Response Content Length. response.Content.Headers.ContentLength = memoryStream.ToArray().LongLength; //Set the Content Disposition Header Value and FileName. response.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment"); response.Content.Headers.ContentDisposition.FileName = zipName; //Set the File Content Type. response.Content.Headers.ContentType = new MediaTypeHeaderValue("application/zip"); return response; } } } catch (Exception ex) { response = Request.CreateResponse(JsonConvert.DeserializeObject("{\"StatusCode\":\"500\",\"ErrorMessage\":\"" + ex.Message + "\"}")); return response; } // = Request.CreateResponse(HttpStatusCode.OK, response); }

Sandeep Kumar · Answer

Error :showing { "StatusCode": "500", "ErrorMessage": "URI formats are not supported." } Actually I want to retreive file from live url l like :-http://148.72.207.115:4458/BBGS_Unit3_BD_GEN_2021-2022_sample_001.png Pls Go through my code .i don't want in mvc ,i want normal web api

Amit Mohanty · Answer

Check this [Authorize] [HttpPost] public IActionResult DownloadImage(JObject jsonParam) { try { UserIdentity UI = new UserIdentity((ClaimsIdentity)User.Identity); var RoleId = Convert.ToInt32(UI.RoleId); var UserID = Convert.ToInt32(UI.UserID); PmsInsertUpdateData _KD = new PmsInsertUpdateData(); DataTable DtImage = _KD.DownloadImage(jsonParam); string filePath = string.Empty; using (ZipFile zip = new ZipFile()) { zip.AlternateEncodingUsage = ZipOption.AsNecessary; zip.AddDirectoryByName("Files"); foreach (DataRow row in DtImage.Rows) { filePath = row["FileName"].ToString(); string localPath = new Uri(filePath).LocalPath; zip.AddFile(filePath, "Files"); } // Set the Name of the ZIP File. string zipName = String.Format("Zip_{0}.zip", DateTime.Now.ToString("yyyy-MMM-dd-HHmmss")); using (MemoryStream memoryStream = new MemoryStream()) { zip.Save(memoryStream); return File(memoryStream.ToArray(), "application/zip", zipName); } } } catch (Exception ex) { return BadRequest(ex.Message); } }

Sandeep Kumar · Answer

I don;t need in mvc It is working for local path but i want to fetch file from Url My Url Is like :-http://148.72.207.115:4458/BBGS_Unit3_BD_GEN_2021-2022_sample_001.png My Code is like [Authorize] [HttpGet] public HttpResponseMessage DownloadImage(Int Id) { HttpResponseMessage response = Request.CreateResponse(HttpStatusCode.OK); try { UserIdentity UI = new UserIdentity((ClaimsIdentity)User.Identity); var RoleId = Convert.ToInt32(UI.RoleId); var UserID = Convert.ToInt32(UI.UserID); PmsInsertUpdateData _KD = new PmsInsertUpdateData(); // var CD_Dtls = _KD.GetPmsUploadedImage(Id); DataTable DtImage = _KD.DownloadImage(jsonParam); string filePath = string.Empty; using (ZipFile zip = new ZipFile()) { zip.AlternateEncodingUsage = ZipOption.AsNecessary; zip.AddDirectoryByName("Files"); foreach (DataRow row in DtImage.Rows) { filePath = row["FileName"].ToString(); string localPath = new Uri(filePath).LocalPath; zip.AddFile(filePath, "Files"); } //Set the Name of Zip File. string zipName = String.Format("Zip_{0}.zip", DateTime.Now.ToString("yyyy-MMM-dd-HHmmss")); using (MemoryStream memoryStream = new MemoryStream()) { //Save the Zip File to MemoryStream. zip.Save(memoryStream); //Set the Response Content. response.Content = new ByteArrayContent(memoryStream.ToArray()); //Set the Response Content Length. response.Content.Headers.ContentLength = memoryStream.ToArray().LongLength; //Set the Content Disposition Header Value and FileName. response.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment"); response.Content.Headers.ContentDisposition.FileName = zipName; //Set the File Content Type. response.Content.Headers.ContentType = new MediaTypeHeaderValue("application/zip"); return response; } } } catch (Exception ex) { response = Request.CreateResponse(JsonConvert.DeserializeObject("{\"StatusCode\":\"500\",\"ErrorMessage\":\"" + ex.Message + "\"}")); return response; } // = Request.CreateResponse(HttpStatusCode.OK, response); }

Amit Mohanty · Answer

Try this [HttpGet("{filename}")] public async Task DownloadFile(string filename) { // Replace "path/to/files" with the actual path to your files string filePath = Path.Combine("path/to/files", filename); if (!System.IO.File.Exists(filePath)) { return NotFound(); } // Generate a unique file name for the zip file string zipFileName = $"{Path.GetFileNameWithoutExtension(filename)}_{DateTime.Now:yyyyMMddHHmmss}.zip"; string zipFilePath = Path.Combine(Path.GetTempPath(), zipFileName); // Create a new zip archive using (var zipArchive = ZipFile.Open(zipFilePath, ZipArchiveMode.Create)) { // Add the file to the zip archive zipArchive.CreateEntryFromFile(filePath, Path.GetFileName(filePath)); } // Read the zip file into a byte array byte[] zipBytes = await System.IO.File.ReadAllBytesAsync(zipFilePath); // Clean up the temporary zip file System.IO.File.Delete(zipFilePath); // Set the Content-Disposition header to prompt the user to download the file var contentDisposition = new System.Net.Mime.ContentDisposition { FileName = zipFileName, Inline = false // Set this to true if you want the browser to attempt to display the file inline }; Response.Headers.Add("Content-Disposition", contentDisposition.ToString()); // Return the zip file as a byte array return File(zipBytes, "application/zip"); }

Sandeep Kumar · Answer

it is working https://www.aspsnippets.com/Articles/Download-Compressed-Zip-File-from-Web-API-in-ASPNet-MVC.aspx but when i want to download from url it is not working pls guide how can i download multiple file from url in Zip File My Url Is like :-http://148.72.207.115:4458/BBGS_Unit3_BD_GEN_2021-2022_sample_001.png

Vishal Yelve · Answer

Hi Sandeep, Do refer below links https://www.aspsnippets.com/Articles/Download-Compressed-Zip-File-from-Web-API-in-ASPNet-MVC.aspx https://stackoverflow.com/questions/41383338/how-to-download-a-zipfile-from-a-dotnet-core-webapi

A web api for download file in Zipped

Answers (11)