Assalamualaikum,
in ASP.NET MVC, I can upload file by DropZone. Here, if I drag and drop any folder contains sub folders and file, it upload only all files from all sub folder, in a server upload folder. But I want to upload those file with its sub folder name. This sub folder name can be store in DB or create new folder.
For example uploading file / folder in google drive.
Here is my uploading code (Only the functional code here) :
public void Upload()
{
bool isSavedSuccessfully = true;
string fName = "";
try
{
foreach (string fileName in Request.Files)
{
HttpPostedFileBase file = Request.Files[fileName];
fName = file.FileName;
if (file != null && file.ContentLength > 0)
{
try
{
Guid GuidFileName = Guid.NewGuid();
var path = Path.Combine(Server.MapPath("~/_UploadedFile"));
string pathString = System.IO.Path.Combine(path.ToString());
var fileName1 = Path.GetFileName(file.FileName);
var ext = Path.GetExtension(file.FileName);
bool isExists = System.IO.Directory.Exists(pathString);
if (!isExists) System.IO.Directory.CreateDirectory(pathString);
var uploadpath = string.Format("{0}\\{1}{2}", pathString, GuidFileName.ToString(), ext.ToString());
file.SaveAs(uploadpath);
}
catch (Exception ex)
{
}
}
}
}
catch (Exception ex)
{
isSavedSuccessfully = false;
}
if (isSavedSuccessfully)
{
}
else
{
}
}
Now, please help me to get sub folder's name from file.
Thanks.
Related
When a .rtf file is upload through an action in ASP.NET MVC, the mimetype for seems to be wrong (application/msword instead of application/rtf):
foreach (string _file in Request.Files)
{
var fileContent = Request.Files[_file];
if (fileContent != null && fileContent.ContentLength > 0)
{
var stream = fileContent.InputStream;
Attachment attachment = new Attachment
{
File = stream.ToByteArray(),
MimeType = fileContent.ContentType,
NomeFile = fileContent.FileName,
Description = description
};
}
}
fileContent is HttpPostedFileBase type.
I am uploading 3 types of files, i.e 1)video 2)image 3)document.
if i am uploading all three files at once so it is upload and show successfully, but if i want to skip one the file of uploading then it giving me following errors. Please Help me here:
httpPostedFile.SaveAs(fileSavePath);
db.SaveChanges();
one the errors is because of sending path to db i guess.
[HttpPost]
public ActionResult AddSKU(SKU_Det skufiles, IEnumerable<HttpPostedFileBase> files)
{
var httpPostedFile = Request.Files[0];
if (httpPostedFile != null)
{
var uploadFilesDir = System.Web.HttpContext.Current.Server.MapPath("~/Content/Videos");
if (!Directory.Exists(uploadFilesDir))
{
Directory.CreateDirectory(uploadFilesDir);
}
var fileSavePath = Path.Combine(uploadFilesDir, httpPostedFile.FileName);
httpPostedFile.SaveAs(fileSavePath);
}
foreach (var file in files)
{
if (file != null && file.ContentLength > 0)
{
file.SaveAs(HttpContext.Server.MapPath("~/Areas/Admin/Images/") + file.FileName);
}
}
SKU_Det sku = new SKU_Det();
sku.SKU = skufiles.SKU;
sku.VideoPath = Request.Files[0].FileName;
sku.Imagepath = sku.FilePath = Request.Files[1].FileName;
sku.FilePath = sku.FilePath = Request.Files[2].FileName;
db.SKU_Det.Add(sku);
db.SaveChanges();
I have 2 files saved on Azure blob storage:
Abc.txt
Pqr.docx
Now i want to create zip files of this 2 files and allow user to download.
I have saved this in my database table field like this:
Document
Abc,Pqr
Now when i click on download then i am getting file like below with no data in it and file extension are lost too like below:
I want user to get exact file(.txt,.docx) in zip when user download zip file.
This is my code:
public ActionResult DownloadImagefilesAsZip()
{
string documentUrl = repossitory.GetDocumentsUrlbyId(id);//output:Abc.txt,Pqr.Docx
if (!string.IsNullOrEmpty(documentUrl))
{
string[] str = documentUrl.Split(',');
if (str.Length > 1)
{
using (ZipFile zip = new ZipFile())
{
int cnt = 0;
foreach (string t in str)
{
if (!string.IsNullOrEmpty(t))
{
Stream s = this.GetFileContent(t);
zip.AddEntry("File" + cnt, s);
}
cnt++;
}
zip.Save(outputStream);
outputStream.Position = 0;
return File(outputStream, "application/zip", "all.zip");
}
}
}
public Stream GetFileContent(string fileName)
{
CloudBlobContainer container = this.GetCloudBlobContainer();
CloudBlockBlob blockBlob = container.GetBlockBlobReference(fileName);
var stream = new MemoryStream();
blockBlob.DownloadToStream(stream);
return stream;
}
public CloudBlobContainer GetCloudBlobContainer()
{
CloudStorageAccount storageAccount = CloudStorageAccount.Parse(ConfigurationManager.AppSettings["StorageConnectionString"].ToString());
CloudBlobClient blobclient = storageAccount.CreateCloudBlobClient();
CloudBlobContainer blobcontainer = blobclient.GetContainerReference("Mystorage");
if (blobcontainer.CreateIfNotExists())
{
blobcontainer.SetPermissions(new BlobContainerPermissions { PublicAccess = BlobContainerPublicAccessType.Blob });
}
blobcontainer.SetPermissions(new BlobContainerPermissions { PublicAccess = BlobContainerPublicAccessType.Blob });
return blobcontainer;
}
I want same file to be downloaded when user download zip file.
Can anybody help me with this??
I'm not a web dev, but hopefully this will help. This snippet of code is in a method where I download a list of blobs into a zip file archive using a stream. The list of files had the slashes in all directions, so there's code in here to fix this, and to make sure I'm getting the blob reference with the right text (no URL, and no opening slash if the blob is in a "folder").
I suspect your problem is not using a memory stream or a binary writer. Specificity helps sometimes. Good luck.
using (ZipArchive zipFile = ZipFile.Open(outputZipFileName, ZipArchiveMode.Create))
{
foreach (string oneFile in listOfFiles)
{
//Need the filename, complete with relative path. Make it like a file name on disk, with backwards slashes.
//Also must be relative, so can't start with a slash. Remove if found.
string filenameInArchive = oneFile.Replace(#"/", #"\");
if (filenameInArchive.Substring(0, 1) == #"\")
filenameInArchive = filenameInArchive.Substring(1, filenameInArchive.Length - 1);
//blob needs slashes in opposite direction
string blobFile = oneFile.Replace(#"\", #"/");
//take first slash off of the (folder + file name) to access it directly in blob storage
if (blobFile.Substring(0, 1) == #"/")
blobFile = oneFile.Substring(1, oneFile.Length - 1);
var cloudBlockBlob = this.BlobStorageSource.GetBlobRef(blobFile);
if (!cloudBlockBlob.Exists()) //checking just in case
{
//go to the next file
//should probably trace log this
//add the file name with the fixed slashes rather than the raw, messed-up one
// so anyone looking at the list of files not found doesn't think it's because
// the slashes are different
filesNotFound.Add(blobFile);
}
else
{
//blob listing has files with forward slashes; that's what the zip file requires
//also, first character should not be a slash (removed it above)
ZipArchiveEntry newEntry = zipFile.CreateEntry(filenameInArchive, CompressionLevel.Optimal);
using (MemoryStream ms = new MemoryStream())
{
//download the blob to a memory stream
cloudBlockBlob.DownloadToStream(ms);
//write to the newEntry using a BinaryWriter and copying it 4k at a time
using (BinaryWriter entry = new BinaryWriter(newEntry.Open()))
{
//reset the memory stream's position to 0 and copy it to the zip stream in 4k chunks
//this keeps the process from taking up a ton of memory
ms.Position = 0;
byte[] buffer = new byte[4096];
bool copying = true;
while (copying)
{
int bytesRead = ms.Read(buffer, 0, buffer.Length);
if (bytesRead > 0)
{
entry.Write(buffer, 0, bytesRead);
}
else
{
entry.Flush();
copying = false;
}
}
}//end using for BinaryWriter
}//end using for MemoryStream
}//if file exists in blob storage
}//end foreach file
} //end of using ZipFileArchive
There are two things I noticed:
Once you read the blob contents in stream, you are not resetting that stream's position to 0. Thus all files in your zip are of zero bytes.
When calling AddEntry, you may want to specify the name of the blob there instead of "File"+cnt.
Please look at the code below. It's a console app that creates the zip file and writes it on the local file system.
static void SaveBlobsToZip()
{
string[] str = new string[] { "CodePlex.png", "DocumentDB.png" };
var account = new CloudStorageAccount(new StorageCredentials(accountName, accountKey), true);
var blobClient = account.CreateCloudBlobClient();
var container = blobClient.GetContainerReference("images");
using (var fs = new FileStream("D:\\output.zip", FileMode.Create))
{
fs.Position = 0;
using (var ms1 = new MemoryStream())
{
using (ZipFile zip = new ZipFile())
{
int cnt = 0;
foreach (string t in str)
{
var ms = new MemoryStream();
container.GetBlockBlobReference(t).DownloadToStream(ms);
ms.Position = 0;//This was missing from your code
zip.AddEntry(t, ms);//You may want to give the name of the blob here.
cnt++;
}
zip.Save(ms1);
}
ms1.Position = 0;
ms1.CopyTo(fs);
}
}
}
UPDATE
Here's the code in the MVC application (though I am not sure it is the best code :) but it works). I modified your code a little bit.
public ActionResult DownloadImagefilesAsZip()
{
string[] str = new string[] { "CodePlex.png", "DocumentDB.png" }; //repossitory.GetDocumentsUrlbyId(id);//output:Abc.txt,Pqr.Docx
CloudBlobContainer blobcontainer = GetCloudBlobContainer();// azureStorageUtility.GetCloudBlobContainer();
MemoryStream ms1 = new MemoryStream();
using (ZipFile zip = new ZipFile())
{
int cnt = 0;
foreach (string t in str)
{
var ms = new MemoryStream();
CloudBlockBlob blockBlob = blobcontainer.GetBlockBlobReference(t);
blockBlob.DownloadToStream(ms);
ms.Position = 0;//This was missing from your code
zip.AddEntry(t, ms);//You may want to give the name of the blob here.
cnt++;
}
zip.Save(ms1);
}
ms1.Position = 0;
return File(ms1, "application/zip", "all.zip");
}
I have seen people using ICSharpZip library, take a look at this piece of code
public void ZipFilesToResponse(HttpResponseBase response, IEnumerable<Asset> files, string zipFileName)
{
using (var zipOutputStream = new ZipOutputStream(response.OutputStream))
{
zipOutputStream.SetLevel(0); // 0 - store only to 9 - means best compression
response.BufferOutput = false;
response.AddHeader("Content-Disposition", "attachment; filename=" + zipFileName);
response.ContentType = "application/octet-stream";
foreach (var file in files)
{
var entry = new ZipEntry(file.FilenameSlug())
{
DateTime = DateTime.Now,
Size = file.Filesize
};
zipOutputStream.PutNextEntry(entry);
storageService.ReadToStream(file, zipOutputStream);
response.Flush();
if (!response.IsClientConnected)
{
break;
}
}
zipOutputStream.Finish();
zipOutputStream.Close();
}
response.End();
}
Taken from here generate a Zip file from azure blob storage files
I am encountering a problem in getting the download prompt. In the below code first am allowing the user to upload a file to compress. Once the file is compressed the user should be provided with the compressed files. But in the below code download prompt doesn't appears neither it shows any error. Please help me by correcting my code
The view code:
function CompressFile(box) {
var file = document.getElementById('fileComp');
if (file.value == "") {
alert("Choose a file to upload");
return false;
}
dhtmlx.modalbox.hide(box);
var fd = new FormData();
fd.append('file', file.files[0]);
var xhr = new XMLHttpRequest();
xhr.open('POST', '/FileUpload/Compress', true);
xhr.send(fd);
}
The controller code:
public ActionResult Compress(HttpPostedFileBase file)
{
var supportedType = new[] { "pdf" };
var fileExt = System.IO.Path.GetExtension(file.FileName).Substring(1);
var filename = Path.GetFileNameWithoutExtension(file.FileName) ?? "";
if (file.ContentLength > 0 && supportedType.Contains(fileExt))
{
string filePath = Path.Combine(HttpContext.Server.MapPath(_uploadPDF), Path.GetFileName(file.FileName));
file.SaveAs(filePath);
PdfReader reader = new PdfReader(filePath);
string name = DateTime.Now.ToString("ddMM_HHmmss");
name = Server.MapPath(_fileUploadPath + name + ".pdf");
PdfStamper stamper = new PdfStamper(reader, new FileStream(name, FileMode.Create), PdfWriter.VERSION_1_5);
stamper.FormFlattening = true;
stamper.SetFullCompression();
stamper.Close();
string fn = System.IO.Path.GetFileName(name);
return base.File(name, "application/pdf",fn);
}
else
{
return View();
}
}
The problem is that you're using Ajax. You can't download a file through Ajax. You need to do a regular POST to the ActionMethod. That way the browser can send you back the file and prompt the user where he wants to save it.
Using MonoDroid in Visual Studio and an emulator, I am trying to copy a asset, "db.sqlite" from the assets folder to the SD card so that I can open the database for read/write.
When I run the app, it dies. MonoDroid is not giving me any debug info.
string destPath = Path.Combine(Environment.GetFolderPath(
Environment.SpecialFolder.Personal), "db.sqlite");
if (!File.Exists(destPath))
using (Stream stream = Assets.Open("db.sqlite"))
{
stream.CopyTo(File.Create(destPath));
stream.Close();
}
Check the Android Debug Log:
http://android.xamarin.com/Documentation/Guides/Android_Debug_Log
Try saving the file with database file .mp3 extension and then use the following script to copy it to SD card
private void copyFilesToSdCard() {
copyFileOrDir(""); // copy all files in assets folder in my project
}
private void copyFileOrDir(String path) {
AssetManager assetManager = this.getAssets();
String assets[] = null;
try {
Log.i("tag", "copyFileOrDir() "+path);
assets = assetManager.list(path);
if (assets.length == 0) {
copyFile(path);
} else {
String fullPath = TARGET_BASE_PATH + path;
Log.i("tag", "path="+fullPath);
File dir = new File(fullPath);
if (!dir.exists() && !path.startsWith("images") && !path.startsWith("sounds") && !path.startsWith("webkit"))
if (!dir.mkdirs());
Log.i("tag", "could not create dir "+fullPath);
for (int i = 0; i < assets.length; ++i) {
String p;
if (path.equals(""))
p = "";
else
p = path + "/";
if (!path.startsWith("images") && !path.startsWith("sounds") && !path.startsWith("webkit"))
copyFileOrDir( p + assets[i]);
}
}
} catch (IOException ex) {
Log.e("tag", "I/O Exception", ex);
}
}
private void copyFile(String filename) {
AssetManager assetManager = this.getAssets();
InputStream in = null;
OutputStream out = null;
String newFileName = null;
try {
Log.i("tag", "copyFile() "+filename);
in = assetManager.open(filename);
if (filename.endsWith(".mp3")) // extension was added to avoid compression on APK file
newFileName = TARGET_BASE_PATH + filename.substring(0, filename.length()-4);
else
newFileName = TARGET_BASE_PATH + filename;
out = new FileOutputStream(newFileName);
byte[] buffer = new byte[1024];
int read;
while ((read = in.read(buffer)) != -1) {
out.write(buffer, 0, read);
}
in.close();
in = null;
out.flush();
out.close();
out = null;
} catch (Exception e) {
Log.e("tag", "Exception in copyFile() of "+newFileName);
Log.e("tag", "Exception in copyFile() "+e.toString());
}
Code that worked for me (it copies recursively file or directory and all subdirectories ):
private void copy(string SourcePath){
string[] list = Assets.List(SourcePath);
if (list.Length > 0) {
Directory.CreateDirectory(AndroidResorces.GetDatabaseStorage() + "/" + SourcePath);
foreach (string dirPath in Assets.List(SourcePath)){
string newPath = SourcePath + "/" + dirPath;
copy(newPath);
}
}
else{
Assets.Open(SourcePath).CopyTo(new FileStream(AndroidResorces.GetDatabaseStorage() + "/" + SourcePath, FileMode.OpenOrCreate));
}
}
Usage: copy(path_relative_to_assets_root);