i've searched about how to upload files to websites using console applications and i reached some ways, seems like the correct way, but i'm not having sucess with this. So i need some help!
First, the solution that i've founded follows:
class Program
{
static void Main(string[] args)
{
//Program.Test1();
Program.Test3();
Console.ReadLine();
}
public static void Test3()
{
//Set this to dont get an Invalid Request Exception
System.Net.ServicePointManager.Expect100Continue = false;
//Set a real page for this test
string url = "http://www.toledorocket.com/perftest/uploadtest/fileselect.asp";
string[] files = { "C:\\Documents and Settings\\wkurten\\Desktop\\fogao.txt" }; //Put some real file
NameValueCollection nvc = new NameValueCollection();
nvc.Add("FILE1", "fogao.txt");
string boundary = "----------------------------" +
DateTime.Now.Ticks.ToString("x");
HttpWebRequest httpWebRequest2 = (HttpWebRequest)WebRequest.Create(url);
httpWebRequest2.ContentType = "multipart/form-data; boundary=" +
boundary;
httpWebRequest2.Method = "POST";
httpWebRequest2.KeepAlive = true;
httpWebRequest2.Credentials =
System.Net.CredentialCache.DefaultCredentials;
//Is you have an connection with proxy, uncomment and set the values bellow:
/*NetworkCredential localNetworkCredential = new NetworkCredential("user", "pass", "domain");
httpWebRequest2.Proxy = new WebProxy("server:port", false);
httpWebRequest2.Proxy.Credentials = localNetworkCredential;*/
Stream memStream = new System.IO.MemoryStream();
byte[] boundarybytes = System.Text.Encoding.ASCII.GetBytes("\r\n--" +
boundary + "\r\n");
string formdataTemplate = "\r\n--" + boundary +
"\r\nContent-Disposition: form-data; name=\"{0}\";\r\n\r\n{1}";
foreach (string key in nvc.Keys)
{
string formitem = string.Format(formdataTemplate, key, nvc[key]);
byte[] formitembytes = System.Text.Encoding.UTF8.GetBytes(formitem);
memStream.Write(formitembytes, 0, formitembytes.Length);
}
memStream.Write(boundarybytes, 0, boundarybytes.Length);
string headerTemplate = "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\n Content-Type: application/octet-stream\r\n\r\n";
for (int i = 0; i < files.Length; i++)
{
string header = string.Format(headerTemplate, "file" + i, files[i]);
//string header = string.Format(headerTemplate, "uplTheFile", files[i]);
byte[] headerbytes = System.Text.Encoding.UTF8.GetBytes(header);
memStream.Write(headerbytes, 0, headerbytes.Length);
FileStream fileStream = new FileStream(files[i], FileMode.Open,
FileAccess.Read);
byte[] buffer = new byte[1024];
int bytesRead = 0;
while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
{
memStream.Write(buffer, 0, bytesRead);
}
memStream.Write(boundarybytes, 0, boundarybytes.Length);
fileStream.Close();
}
httpWebRequest2.ContentLength = memStream.Length;
Stream requestStream = httpWebRequest2.GetRequestStream();
memStream.Position = 0;
byte[] tempBuffer = new byte[memStream.Length];
memStream.Read(tempBuffer, 0, tempBuffer.Length);
memStream.Close();
requestStream.Write(tempBuffer, 0, tempBuffer.Length);
requestStream.Close();
//Gets the response
WebResponse webResponse2 = httpWebRequest2.GetResponse();
Stream stream2 = webResponse2.GetResponseStream();
StreamReader reader2 = new StreamReader(stream2);
//Retrieve the html from response
string htmlResponse = reader2.ReadToEnd();
webResponse2.Close();
httpWebRequest2 = null;
webResponse2 = null;
}
}
The problem that i'm having with this solution is that when i upload a file and retrieves the WebResponse, the page that i'm getting is the page with the upload form and not the page that appears after upload, that page with the success message.
On the page that i'm trying to upload the file i have this html/form:
<FORM METHOD="POST" ENCTYPE="multipart/form-data" ACTION="uploadstatus.asp">
<INPUT TYPE="FILE" SIZE="40" NAME="FILE1"> <INPUT TYPE=SUBMIT VALUE="Upload!">
</FORM>
When i run my code i just get this same form every time, seems like i'm never posting anything... anyone have an idea of what is happening?
Related
I try to create a PDF report from a datatable. One of the columns contents image. How can I extract the image from datatable and insert into PDF table? I'm using iTextShap version 5.4.2.0. Here is the code:
public void Report(DataTable dt, string output)
{
Document doc = new Document(PageSize.LETTER, 50, 50, 80, 50);
PdfWriter PDFWriter = PdfWriter.GetInstance(doc, new FileStream(output, FileMode.Create));
PDFWriter.ViewerPreferences = PdfWriter.PageModeUseOutlines;
iTextSharp.text.Font hel8 = FontFactory.GetFont(BaseFont.HELVETICA, 8);
doc.Open();
PdfPTable table = new PdfPTable(dt.Columns.Count);
float[] widths = new float[] { 1.2f, 1.2f, 1.2f, 1.2f, 1f, 4f, 1f, 4f };
table.SetWidths(widths);
table.WidthPercentage = 100;
PdfPCell cell = new PdfPCell(new Phrase("NewCells"));
cell.Colspan = dt.Columns.Count;
foreach (DataColumn c in dt.Columns)
{
table.AddCell(new Phrase(c.ColumnName, hel8));
}
foreach (DataRow r in dt.Rows)
{
if (dt.Rows.Count > 0)
{
table.AddCell(new Phrase(r[0].ToString(), hel8));
table.AddCell(new Phrase(r[1].ToString(), hel8));
table.AddCell(new Phrase(r[2].ToString(), hel8));
table.AddCell(new Phrase(r[3].ToString(), hel8));
table.AddCell(new Phrase(r[4].ToString(), hel8));
table.AddCell(new Phrase(r[5].ToString(), hel8));
byte[] byt = (byte[])r[6];
MemoryStream ms = new MemoryStream(byt);
System.Drwaing.Image sdi = System.Drawing.Image.FromStream(ms);
Image img = Image.GetInstance(sdi); <-- this is the problem code
table.AddCell(img);
table.AddCell(new Phrase(r[7].ToString(), hel8));
}
}
doc.Add(table);
}
doc.Close();
}
Update: #nekno, all of your suggestions are worked.
But I still need to correct the casting at line:
byte[] byt = (byte[])r[6];
It gave me a casting exception from VS2008. So I added the conversion function (pulled it from stackoverflow):
byte[] ImageToByte(System.Drawing.Image img)
{
byte[] byteArray = new byte[0];
using (MemoryStream stream = new MemoryStream())
{
img.Save(stream, System.Drawing.Imaging.ImageFormat.Png);
stream.Close();
byteArray = stream.ToArray();
}
return byteArray;
}
And revised the code:
byte[] byt = ImageToByte((System.Drawing.Image)dt.Rows[e][6]);
Thanks.
What exactly is the problem? What happens when you use your problem code?
Try one of the other Image.GetInstance() overloads:
You can pass the byte array directly:
byte[] byt = (byte[])r[6];
Image img = Image.GetInstance(byt);
Or you can pass the Stream:
byte[] byt = (byte[])r[6];
MemoryStream ms = new MemoryStream(byt);
Image img = Image.GetInstance(ms);
Or you can give iTextSharp more info about the image format:
byte[] byt = (byte[])r[6];
MemoryStream ms = new MemoryStream(byt);
System.Drawing.Image sdi = System.Drawing.Image.FromStream(ms);
Image img = Image.GetInstance(sdi, ImageFormat.Png);
If your column can be cast to a System.Drawing.Image, then you can use it directly:
Image img = Image.GetInstance((System.Drawing.Image)r[6], System.Drawing.Imaging.ImageFormat.Png);
I have suggested steps how shows how to add image into PDF, given below code snippet show how to add logo into your PDF using iTextsharp, follow provided below steps:
I have provided link to download "itextsharp" component from given link http://sourceforge.net/projects/itextsharp/
You have to add reference into your application.
Next you have to add required namespaces "iTextsharp.text.html", "iTextsharp.text" to consume its best properties.
Now you have to add code snippet into your application given at the end, add code snippet under "button click" in code behind.
Hope it will work for you !!!
protected void btnPDF_Click(object sender, ImageClickEventArgs e)
{
DataTable dtn = new DataTable();
dtn = GetDataTable();
dtPDF = dtn.Copy();
for (int i = 0; i <= dtn.Rows.Count - 1; i++)
{
ExportToPdf(dtPDF);
}
}
public void ExportToPdf(DataTable myDataTable)
{
Document pdfDoc = new Document(PageSize.A4, 10, 10, 10, 10);
try
{
PdfWriter.GetInstance(pdfDoc, System.Web.HttpContext.Current.Response.OutputStream);
pdfDoc.Open();
Chunk c = new Chunk("" + System.Web.HttpContext.Current.Session["CompanyName"] + "", FontFactory.GetFont("Verdana", 11));
Paragraph p = new Paragraph();
p.Alignment = Element.ALIGN_CENTER;
p.Add(c);
pdfDoc.Add(p);
string clientLogo = Server.MapPath(".") + "/logo/tpglogo.jpg";
string imageFilePath = Server.MapPath(".") + "/logo/tpglogo.jpg";
iTextSharp.text.Image jpg = iTextSharp.text.Image.GetInstance(imageFilePath);
//Resize image depend upon your need
jpg.ScaleToFit(80f, 60f);
//Give space before image
jpg.SpacingBefore = 0f;
//Give some space after the image
jpg.SpacingAfter = 1f;
jpg.Alignment = Element.HEADER;
pdfDoc.Add(jpg);
Font font8 = FontFactory.GetFont("ARIAL", 7);
DataTable dt = myDataTable;
if (dt != null)
{
//Craete instance of the pdf table and set the number of column in that table
PdfPTable PdfTable = new PdfPTable(dt.Columns.Count);
PdfPCell PdfPCell = null;
for (int rows = 0; rows < dt.Rows.Count; rows++)
{
for (int column = 0; column < dt.Columns.Count; column++)
{
PdfPCell = new PdfPCell(new Phrase(new Chunk(dt.Rows[rows][column].ToString(), font8)));
PdfTable.AddCell(PdfPCell);
}
}
//PdfTable.SpacingBefore = 15f; // Give some space after the text or it may overlap the table
pdfDoc.Add(PdfTable); // add pdf table to the document
}
pdfDoc.Close();
Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition", "attachment; filename= SampleExport.pdf");
System.Web.HttpContext.Current.Response.Write(pdfDoc);
Response.Flush();
Response.End();
//HttpContext.Current.ApplicationInstance.CompleteRequest();
}
catch (DocumentException de)
{
System.Web.HttpContext.Current.Response.Write(de.Message);
}
catch (IOException ioEx)
{
System.Web.HttpContext.Current.Response.Write(ioEx.Message);
}
catch (Exception ex)
{
System.Web.HttpContext.Current.Response.Write(ex.Message);
}
}
Currently attachment takes stream for the content, is it possible to set a youtube video url for the attachment?
Thanks
This is not yet possible with the current version of the API and Glass client. Feel free to file a feature request on our issues tracker.
It is possible to stream a youtube video in the timeline card, here is the C#.Net code. use this name space "YoutubeExtractor".This works fine for me. When getting the youtube video url get the link that comes after you select share.
private static String InsertItem5(MainController controller)
{
string link = "http://youtu.be/9uYKISlL7Vg";
IEnumerable<VideoInfo> videoInfos = DownloadUrlResolver.GetDownloadUrls(link);
VideoInfo video = videoInfos.First(info => info.VideoType == VideoType.Mp4 && info.Resolution == 360);
String vLink = video.DownloadUrl;
TimelineItem critical = new TimelineItem()
{
Text = "Menu Card",
BundleId = "666",
Notification = new NotificationConfig() { Level = "DEFAULT" },
MenuItems = new List<MenuItem>()
{
new MenuItem() {Action = "DELETE"},
}
};
String mediaLink = vLink;
if (!String.IsNullOrEmpty(mediaLink))
{
Stream stream = null;
if (mediaLink.StartsWith("/"))
{
stream = new StreamReader(controller.Server.MapPath(mediaLink)).BaseStream;
}
else
{
HttpWebRequest request = WebRequest.Create(mediaLink) as HttpWebRequest;
request.UseDefaultCredentials = false;
HttpWebResponse response = request.GetResponse() as HttpWebResponse;
byte[] b = null;
using (Stream streamFromWeb = response.GetResponseStream())
using (MemoryStream ms = new MemoryStream())
{
int count = 0;
do
{
byte[] buf = new byte[1024];
count = streamFromWeb.Read(buf, 0, 1024);
ms.Write(buf, 0, count);
} while (streamFromWeb.CanRead && count > 0);
b = ms.ToArray();
stream = new MemoryStream(b);
}
}
controller.Service.Timeline.Insert(critical, stream, "video/mp4").Upload();
}
else
{
controller.Service.Timeline.Insert(critical).Fetch();
}
I'm able to read the bytes and print it out on System console. However since GAE does not support file creation, I search through StackOverflow and found out that I can write into GAE blobstore. But I'm not sure how to go about doing it as I'm new to GAE..
public void doPost(HttpServletRequest req, HttpServletResponse resp) throws IOException {
resp.setContentType("text/html;charset=UTF-8");
// resp.setContentType("text/plain");
PrintWriter out = resp.getWriter();
try {
ServletFileUpload upload = new ServletFileUpload();
FileItemIterator iterator = upload.getItemIterator(req);
// out.println("<html><body>");
while (iterator.hasNext()) {
FileItemStream item = iterator.next();
InputStream in = item.openStream();
if (item.isFormField()) {
out.println("<br />Got a form field: " + item.getFieldName());
} else {
out.println("<br />Got an uploaded file: " + item.getFieldName() + ", name = " + item.getName());
ZipInputStream zis = new ZipInputStream(
new BufferedInputStream( in ));
ZipEntry entry;
// Read each entry from the ZipInputStream until no
// more entry found indicated by a null return value
// of the getNextEntry() method.
byte[] buf = new byte[10244];
int len;
while ((entry = zis.getNextEntry()) != null) {
out.println("Unzipping: " + entry.getName());
FileService fileService = FileServiceFactory.getFileService();
AppEngineFile file = fileService.createNewBlobFile("text/plain");
boolean lock = false;
FileWriteChannel writeChannel = fileService.openWriteChannel(file, lock);
PrintWriter outter = new PrintWriter(Channels.newWriter(writeChannel, "UTF8"));
StringBuilder sb = new StringBuilder(buf.length);
if (entry.getName().equalsIgnoreCase("booking.csv")) {
int count = 0;
while ((len = zis.read(buf, 0, buf.length)) != -1) {
//I'm trying to write byte[] into blobstore instead of printing using
//System.out.write(buf, 0, len);
}
Any advice?
Try this:
FileWriteChannel writeChannel = fileService.openWriteChannel(file, lock);
while ((len = zis.read(buf, 0, buf.length)) != -1) {
writeChannel. write(ByteBuffer.wrap(buf, 0, len), null);
}
Easiest way:
import com.google.appengine.api.files.FileService;
import com.google.appengine.api.files.AppEngineFile;
import com.google.appengine.api.files.FileWriteChannel;
import com.google.appengine.api.blobstore.BlobKey;
import com.google.appengine.api.images.ImagesServiceFactory;
import com.google.appengine.api.images.ServingUrlOptions;
...
// your data in byte[] format
byte[] data = image.getData();
/**
* MIME Type for
* JPG use "image/jpeg" for PNG use "image/png"
* PDF use "application/pdf"
* see more: https://en.wikipedia.org/wiki/Internet_media_type
*/
String mimeType = "image/jpeg";
// save data to Google App Engine Blobstore
FileService fileService = FileServiceFactory.getFileService();
AppEngineFile file = fileService.createNewBlobFile(mimeType);
FileWriteChannel writeChannel = fileService.openWriteChannel(file, true);
writeChannel.write(java.nio.ByteBuffer.wrap(data));
writeChannel.closeFinally();
// your blobKey to your data in Google App Engine BlobStore
BlobKey blobKey = fileService.getBlobKey(file);
// THANKS TO BLOBKEY YOU CAN GET FOR EXAMPLE SERVING URL FOR IMAGES
// Get the image serving URL (in https:// format)
String imageUrl =
ImagesServiceFactory.getImagesService().getServingUrl(
ServingUrlOptions.Builder.withBlobKey(blobKey
).secureUrl(true));
I am developing silverlight web part by using the client object model. I am getting the bitmap image from sharepoint server. Now I want to save this bitmap image in isolated storage. So I am using following code
WriteableBitmap wb = new WriteableBitmap(attachments);
using (IsolatedStorageFile isoFile = IsolatedStorageFile.GetUserStoreForApplication())
{
using (IsolatedStorageFileStream isoStream =
new IsolatedStorageFileStream("abcd1.jpg", FileMode.Create, isoFile))
{
using (StreamWriter sw = new StreamWriter(isoStream))
{
sw.Write(wb.ToByteArray());
}
}
}
Now I am seeing the saved image at location C:\Users\Rent2\AppData\LocalLow\Microsoft\Silverlight\is\vzvpufsm.s4i\m0laonzr.til\1\s\nkhajster01es5wdoyfxd0n5rd2dls3ovyu4wcdig04zjx44hyaaafea\f
When I click on it, it gives me message as "Invalid Image". Can you please tell me how should i write code so that I can see the actual image after saving it in isolated storage ?
private void zipFile()
{
context = Microsoft.SharePoint.Client.ClientContext.Current;
Microsoft.SharePoint.Client.File.OpenBinaryDirect(
context,
#"/TemplateInvoice/" + App.templateFileName + ".xlsx", successFile, FailFile);
}
private void successFile(object sender, OpenBinarySucceededEventArgs args)
{
System.Windows.Deployment.Current.Dispatcher.BeginInvoke(() =>
{
// Obtain the isolated storage for an application.
try
{
using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
Stream strm = args.Stream;
using (var isoStream = store.OpenFile(App.templateFileName + ".zip", FileMode.OpenOrCreate))
{
// Read the resource file into a byte array.
bytes = new byte[strm.Length];
int numBytesToRead = (int)strm.Length;
int numBytesRead = 0;
while (numBytesToRead > 0)
{
// Read may return anything from 0 to numBytesToRead.
int n = strm.Read(bytes, numBytesRead, numBytesToRead);
// The end of the file is reached.
if (n == 0)
break;
numBytesRead += n;
numBytesToRead -= n;
}
numBytesToRead = bytes.Length;
// Write the byte array to the IsolatedStorageFileStream.
isoStream.Write(bytes, 0, numBytesToRead);
//isoStream.Dispose();
}
strm.Close();
string path = App.templateFileName + ".zip";
ZipHelp.UnZip(path, System.IO.Path.GetDirectoryName(path), 4096);
replaceFileContent();
string rootDirectory = System.Windows.Browser.HttpUtility.UrlDecode(path);
string fileName = ZipHelp.Zip(rootDirectory.Replace(".zip", ""), invoice);
//string filename = DateTime.Now.Day.ToString() + DateTime.Now.Month.ToString() + DateTime.Now.Year.ToString() + DateTime.Now.Hour.ToString() + DateTime.Now.Minute.ToString() + DateTime.Now.Second.ToString() + "Invoice1.xlsx";
// Read the resource file into a byte array.
using (var stream = store.OpenFile(fileName, FileMode.Open))
{
bytes = new byte[stream.Length];
int numBytesToRead = (int)stream.Length;
int numBytesRead = 0;
while (numBytesToRead > 0)
{
// Read may return anything from 0 to numBytesToRead.
int n = stream.Read(bytes, numBytesRead, numBytesToRead);
// The end of the file is reached.
if (n == 0)
break;
numBytesRead += n;
numBytesToRead -= n;
}
InvoiceTemplete invoiceTemplate = new InvoiceTemplete(fileName, bytes, SetMessage);
invoiceTemplate.AddDocument(invoiceTemplate);
}
}
//mark rows as billed
foreach (var item in PrivatePayList)
{
MedwaiverViewModel MedwaiverViewModelObj = new MedwaiverViewModel();
MedwaiverViewModelObj.ChangeBillingStatus(item.ListItemId, "Billed");
if (MedwaiverTimeLogList != null)
{
MedwaiverTimeLogList.Remove(item);
}
if (ClientSpecificTimeLogList != null)
{
ClientSpecificTimeLogList.Remove(item);
}
if (rangeBoundTimeLogListForDate != null)
{
rangeBoundTimeLogListForDate.Remove(item);
}
if (vRangeBoundTimeLogListForDateAndClient != null)
{
vRangeBoundTimeLogListForDateAndClient.Remove(item);
}
}
}
catch (IsolatedStorageException isx)
{
MessageBox.Show(isx.Message);
}
});
}
private void FailFile(object sender, OpenBinaryFailedEventArgs e)
{
System.Windows.Deployment.Current.Dispatcher.BeginInvoke(() =>
{
MessageBox.Show("Fail");
});
}
//The following class zip and unzip the file
class ZipHelp
{
static List<string> folderPathList = new List<string>();
public static string Zip(string rootDirectory, string fileName)
{
byte[] buffer;
using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
IsolatedStorageFileStream zipFileStream = store.CreateFile(fileName + ".xlsx");
ZipOutputStream zipOutStream = new ZipOutputStream(zipFileStream);
zipOutStream.UseZip64 = UseZip64.Off;
//zipOutStream.CanPatchEntries
foreach (var item in folderPathList)
{
string entryName = "";
buffer = new byte[4096];
if (item.Substring(0,1) == #"/")
{
//removes leading /
entryName = item.Substring(1);
}
else
{
entryName = item;
}
ZipEntry entry = new ZipEntry(entryName);
//entry.CompressionMethod = CompressionMethod.Deflated;
//entry.
entry.IsZip64Forced();
//entry.IsDirectory
zipOutStream.PutNextEntry(entry);
using (IsolatedStorageFileStream stream = store.OpenFile(rootDirectory + #"\" + item, FileMode.Open))
{
int size;
do
{
size = stream.Read(buffer, 0, buffer.Length);
zipOutStream.Write(buffer, 0, size);
} while (size > 0);
stream.Close();
}
}
zipOutStream.Close();
zipFileStream.Close();
}
return fileName + ".xlsx";
//string[] directories = GetLocationTypes();
//zip();
//string[] filenames = Directory.GetFiles(directories);
//using (var store = IsolatedStorageFile.GetUserStoreForApplication())
//{
// using (var isoStream = store.OpenFile("#" + rootDirectory, FileMode.OpenOrCreate))
// {
// //foreach(string dir in
// }
//}
}
private static string[] GetLocationTypes()
{
using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
return store.GetDirectoryNames();
}
}
/// <summary>
/// UnZip a file
/// </summary>
/// <param name="SrcFile">source file path</param>
/// <param name="DstFile">unzipped file path</param>
/// <param name="BufferSize">buffer to use</param>
public static void UnZip(string SrcFile, string DstFile, int BufferSize)
{
folderPathList.Clear();
IsolatedStorageFile store = IsolatedStorageFile.GetUserStoreForApplication();
FileStream fileStreamIn = store.OpenFile(SrcFile, FileMode.Open, FileAccess.Read);
ZipInputStream zipInStream = new ZipInputStream(fileStreamIn);
string rootDirectory = System.Windows.Browser.HttpUtility.UrlDecode(SrcFile);
rootDirectory = rootDirectory.Replace(".zip", "");
store.CreateDirectory(rootDirectory);
while (true)
{
ZipEntry entry = zipInStream.GetNextEntry();
if (entry == null)
break;
if (entry.Name.Contains("/"))
{
string[] folders = entry.Name.Split('/');
string lastElement = folders[folders.Length - 1];
var folderList = new List<string>(folders);
folderList.RemoveAt(folders.Length - 1);
folders = folderList.ToArray();
string folderPath = "";
foreach (string str in folders)
{
folderPath = folderPath + "/" + str;
if (!store.DirectoryExists(rootDirectory + "/" + folderPath))
{
store.CreateDirectory(rootDirectory + "/" + folderPath);
}
}
folderPath = folderPath + "/" + lastElement;
writeToFile(BufferSize, fileStreamIn, zipInStream, rootDirectory, folderPath);
}
else
{
writeToFile(BufferSize, fileStreamIn, zipInStream, rootDirectory, entry.Name);
}
}
zipInStream.Close();
fileStreamIn.Close();
}
private static void writeToFile(int BufferSize, FileStream fileStreamIn, ZipInputStream zipInStream, string rootDirectory, string folderPath)
{
IsolatedStorageFile store1 = IsolatedStorageFile.GetUserStoreForApplication();
FileStream fileStreamOut = store1.OpenFile(rootDirectory + "/" + folderPath, FileMode.Create, FileAccess.Write);
folderPathList.Add(folderPath);
int size;
byte[] buffer = new byte[BufferSize];
do
{
size = zipInStream.Read(buffer, 0, buffer.Length);
fileStreamOut.Write(buffer, 0, size);
} while (size > 0);
fileStreamOut.Close();
}
}
I can think of two viable options here.
In your code above, save off the Pixels array of the WriteableBitmap. Then to restore it, you would create a WriteableBitmap of the appropriate size and the set the Pixels array to the stored data.
-or-
Use a HttpWebRequest or WebClient request to get the raw image stream and save that to IsolatedStorage.
There are pros and cons to each of these, in the first case the data is uncompressed and will take up more space in isolated storage and you would not be able to open the image from disk outside of Silverlight, similar to the issue you had above. For the second option you can run into cross domain issues if the images are on a different server than your Silverlight XAP file and it's also a bit more complex to implement.
The basic problem is that you're storing the decoded RGBA pixels array as a JPEG file - but they're not the same. Your code is basically correct: you just can't use this method to store it as a JPEG file. But if you happen to know that the image is, say, 800x600, you could create an 800x600 WriteableBitmap, and then set the Pixels property to the retrieved stream's byte array. Or if you don't know the dimensions when you're retrieving it, you could store the dimensions as the first two integers in the stream (before you write the pixels to the stream), and read out the dimensions when you're reading the file. You'd effectively be creating your own very simplistic .bmp format.
I am trying to upload a PGP encrypted file through FTP. But I am getting an error message as follows:
The underlying connection was closed: An unexpected error occurred on a receive.
I am using the following code and getting the error at line:
Stream ftpStream = response.GetResponse();
Is there any one who can help me out ASAP.
Following is the code sample:
FtpWebRequest request =
WebRequest.Create("ftp://ftp.website.com/sample.txt.pgp") as FtpWebRequest;
request.UsePassive = true;
FtpWebResponse response = request.GetResponse() as FtpWebResponse;
Stream ftpStream = response.GetResponse();
int bufferSize = 8192;
byte[] buffer = new byte[bufferSize];
using (FileStream fileStream =
new FileStream("localfile.zip", FileMode.Create, FileAccess.Write))
{
int nBytes;
while((nBytes = ftpStream.Read(buffer, 0, bufferSize) > 0)
{
fileStream.Write(buffer, 0, nBytes);
}
}
Regards,
Sumeet
Why are you trying to upload using GetResponse()?
You need at least request.Method = WebRequestMethods.Ftp.UploadFile; and request.GetRequestStream();
ftp.UsePassive = true;
ftp.Method = WebRequestMethods.Ftp.UploadFile;
ftp.KeepAlive = false;
ftp.UseBinary = true;
ftp.UsePassive = true;
ftp.Timeout = int.MaxValue;
ftp.ReadWriteTimeout = int.MaxValue;
ftp.Proxy = null;
ftp.Credentials = new NetworkCredential(values.UserName, values.Password);