I have five zip file in temp folder for download that file. My aim is download all file but now it download first file.
I try this code for download all file
Dim i As Integer
Dim TxtLocalSysName As String = Request.UserHostName
Dim readStream As FileStream
Dim writeStream As FileStream
Try
For i = 0 To lstdownload.Items.Count - 1
Dim filePath As String = Me.Label5.Text + "\" + lstdownload.Items(i).Text
Dim targetFile As System.IO.FileInfo = New System.IO.FileInfo(filePath)
readStream = New FileStream(filePath, FileMode.Open)
Dim length As Integer = Convert.ToInt32(readStream.Length)
'This is the buffer.
Dim byteFile() As Byte = New Byte(length) {}
readStream.Read(byteFile, 0, length)
readStream.Close()
Dim localPath As String = "\\" & TxtLocalSysName & "\c$\downloads"
If Not Directory.Exists(localPath) Then
Directory.CreateDirectory(localPath)
End If
writeStream = New FileStream(localPath & "\" & targetFile.Name, FileMode.Create)
writeStream.Write(byteFile, 0, length)
writeStream.Close()
Next i
Catch ex As Exception
Console.WriteLine("The process failed: {0}", ex.ToString())
Finally
readStream.Close()
readStream.Dispose()
writeStream.Close()
writeStream.Dispose()
End Try
I put the website in server side so all zip file download in server side temp folder. I need all zip file in client side temp folder
Related
I have been breaking my head for the last two days and can't get this to work. I have a report, which I am exporting to Excel and saving on the server file directory. That part works perfectly, I can see the file, and open it, all good. The issue relies on when I try to send it to the browser for download from the server. It does not download anything, I do see the Response Header with all the info on the browser but nothing happens.
Here's one of my many tries
Private Sub dxgvPOAll_ToolbarItemClick(source As Object, e As ASPxGridViewToolbarItemClickEventArgs) Handles dxgvPOAll.ToolbarItemClick
Select Case e.Item.Name
Case "ExportAll"
Using report As DevExpress.XtraReports.UI.XtraReport = New POs_Dashboard_Report()
Using ms As New System.IO.MemoryStream()
report.Name = "Backorder Tickets"
report.ExportOptions.PrintPreview.SaveMode = DevExpress.XtraPrinting.SaveMode.UsingSaveFileDialog
Dim xlsxExportOptions As New DevExpress.XtraPrinting.XlsxExportOptions() With {.ExportMode = DevExpress.XtraPrinting.XlsxExportMode.SingleFile, .ShowGridLines = True, .FitToPrintedPageHeight = True}
Dim folderPath As String = "~/Account/TemporaryFiles/" & Utilities.RetrieveEmployeeNumber() & "/" & Guid.NewGuid.ToString & "/"
Dim serverPath As String = Server.MapPath(folderPath)
Dim xlsxExportFilePath As String = serverPath & report.Name & ".xlsx"
Dim folderInf As New DirectoryInfo(serverPath)
If Not folderInf.Exists Then folderInf.Create()
report.ExportToXlsx(xlsxExportFilePath, xlsxExportOptions)
Try
Dim objRequest As FileWebRequest = CType(WebRequest.Create(xlsxExportFilePath), FileWebRequest)
Dim objResponse As FileWebResponse = CType(objRequest.GetResponse(), FileWebResponse)
Dim bufferSize As Integer = 1
Response.Clear()
Response.ClearHeaders()
Response.ClearContent()
Response.AppendHeader("Content-Disposition:", "attachment; filename=" & xlsxExportFilePath)
Response.AppendHeader("Content-Length", objResponse.ContentLength.ToString())
Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
Dim byteBuffer As Byte() = New Byte(bufferSize + 1 - 1) {}
Dim memStrm As MemoryStream = New MemoryStream(byteBuffer, True)
Dim strm As Stream = objRequest.GetResponse().GetResponseStream()
Dim bytes As Byte() = New Byte(bufferSize + 1 - 1) {}
While strm.Read(byteBuffer, 0, byteBuffer.Length) > 0
Response.BinaryWrite(memStrm.ToArray())
Response.Flush()
End While
HttpContext.Current.Response.Flush()
HttpContext.Current.Response.SuppressContent = True
HttpContext.Current.ApplicationInstance.CompleteRequest()
Catch e1 As ThreadAbortException
Catch ex As Exception
End Try
End Using
End Using
End Select
End Sub
Here's what I see on the browser's Response-Header:
Reading an JSON document "source.json" thru filestream but how do you get the data from the json file? After that I am trying to append the newly edited json data back on the same file.
Dim pathSource As String = "Server.MapPath('~/source.json')"
Try
Using fs As FileStream = New FileStream(pathSource, _
FileMode.Open, FileAccess.Read)
Dim bytes() As Byte = New Byte((fsSource.Length) - 1) {}
Dim numBytesToRead As Integer = CType(fsSource.Length,Integer)
Dim numBytesRead As Integer = 0
While (numBytesToRead > 0)
Dim n As Integer = fsSource.Read(bytes, numBytesRead, _
numBytesToRead)
If (n = 0) Then
Exit While
End If
numBytesRead = (numBytesRead + n)
numBytesToRead = (numBytesToRead - n)
End While
numBytesToRead = bytes.Length
Dim xmlBuilder = New StringBuilder()
fs.Seek(0, SeekOrigin.Begin)
Dim ms As New MemoryStream()
fs.CopyTo(ms)
xmlBuilder.Append(Encoding.UTF8.GetString(ms.ToArray()))
ms.Flush()
ms.Close()
'???How to access the data from the file "source.json" you just read in???
'Edit the file "source.json" data
?? How to put it into "bytesout" the edited data???
Using fsAppend As FileStream = New FileStream(pathSource, _
FileMode.Append, FileAccess.Write)
fsAppend.Write(bytesout, 0, numBytesToRead)
End Using
End Using
Catch ioEx As FileNotFoundException
Console.WriteLine(ioEx.Message)
End Try
I've been down that path. Try to figure out what you did wrong with newtonsoft. The serializer and deserializer methods are fairly easy to use. You only have to create an object per the Json format and deserializer will populate the object automatically. You just have to have the variables in the class be declared as public property nameofjsonobject as
Here is my issue: I'm trying to read JPG files from a folder and convert them to one PDF file for example if in my folder I have 1).Hello.jpg 2). World.jpg I want to grab those files and combined it to a one PDF file so the result will be
newPDF.pdf
I'm reading the images correctly from the folder adding them to the document but it's not creating the new PDF file in the folder. How can I solve this??
Here is my code:
'!=Orginally after setting all the files in the folder we need to read the path from the session file.
'!= After reading the path we need to read each file from the folder and generate one pdf file.
Dim attachmentsFolder As String = "E:/IRAttachments/PSC/2013/2/IR-7264"
Dim fileName As String = String.Concat("IR_7264(", DateTime.Now.ToString("yyyyMMddHHmmssfff").ToString(), ").pdf")
Dim finalPathName As String = String.Concat(attachmentsFolder, "/", fileName)
'!= Step 2). read the pdf/images from folder and merge them to a one pdf file.
Dim files As New List(Of String)()
Dim readerList As New List(Of PdfReader)()
m_HashTableIRAttachments = New Hashtable
m_DictionaryEntryIRAttachments = New DictionaryEntry
Dim fileExtentionType As String = String.Empty
Dim doc As Document = New Document
For Each filePath As String In Directory.GetFiles(attachmentsFolder)
fileExtentionType = filePath.Substring(filePath.LastIndexOf("."))
If fileExtentionType = ".jpg" Then '# Get the extension type
Dim document As New Document()
Using stream = New FileStream(fileName, FileMode.Create, FileAccess.Write, FileShare.None)
PdfWriter.GetInstance(document, stream)
document.Open()
Using imageStream = New FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)
Dim image__1 = Image.GetInstance(imageStream)
document.Add(image__1)
Dim pdfFile As String = finalPathName
End Using
document.Close()
End Using
'PdfWriter.GetInstance(doc, New FileStream(Request.PhysicalApplicationPath + fileName, FileMode.Create))
'doc.Open()
'doc.Add(New Paragraph("Hello World"))
'Dim myDoc As New Document(PageSize.A4, 10.0F, 10.0F, 100.0F, 0.0F)
'Dim pdfFile As String = finalPathName
'Dim writer As PdfWriter = PdfWriter.GetInstance(myDoc, New FileStream(pdfFile, FileMode.Create))
'myDoc.Open()
'Dim para As New Paragraph("Let's write some text before inserting image.")
'Dim myImage As iTextSharp.text.Image = iTextSharp.text.Image.GetInstance(filePath)
'myImage.ScaleToFit(300.0F, 250.0F)
'myImage.SpacingBefore = 50.0F
'myImage.SpacingAfter = 10.0F
'myImage.Alignment = Element.ALIGN_CENTER
'myDoc.Add(para)
'myDoc.Add(myImage)
'myDoc.Close()
'doc.Close()
Else
'# Means it's a pdf and not a jpg file.
Dim pdfReader1 As New PdfReader(filePath)
readerList.Add(pdfReader1)
End If
Next
When you create the Stream for your PDF file, you are using the fileName variable, which is only the name, not the full path. It is likely that the PDF is being created - just not where you are expecting it to be. You probably want to use finalPathName instead:
Using stream = New FileStream(finalPathName, FileMode.Create, FileAccess.Write, FileShare.None)
I would also recommend you take a look at the methods available on the System.IO.Path class, and use them when constructing file paths and getting the file extension, e.g.
Dim finalPathName As String = Path.Combine(attachmentsFolder, fileName)
'...
fileExtentionType = Path.GetExtension(filePath)
' etc.
EDIT
It looks like you are also overwriting the PDF file for each image file, while I would imagine you want all of the images in one PDF file. Your loop for the images should probably be inside the Using stream = ... block (e.g. between document.Open() and document.Close()).
I am trying to show a pdf file in aspx page using FTP but always error 'File Not Found'
Here is my code..
Dim localFile As String = Server.MapPath("~/Test.pdf")
Dim URI As String = "ftp://mysitename/%2f/httpdocs/Folder1/Folder2/Folder3/image123.pdf"
Dim ftp As System.Net.FtpWebRequest = CType(FtpWebRequest.Create(URI), FtpWebRequest)
ftp.Credentials = New NetworkCredential("username", "password")
ftp.KeepAlive = False
ftp.UseBinary = True
ftp.Method = System.Net.WebRequestMethods.Ftp.DownloadFile
Using response As System.Net.FtpWebResponse = CType(ftp.GetResponse, System.Net.FtpWebResponse)
Using responseStream As IO.Stream = response.GetResponseStream
Using fs As New IO.FileStream(localFile, IO.FileMode.Create)
Dim buffer(2047) As Byte
Dim read As Integer = 0
Do
read = responseStream.Read(buffer, 0, buffer.Length)
fs.Write(buffer, 0, read)
Loop Until read = 0
responseStream.Close()
fs.Flush()
fs.Close()
End Using
responseStream.Close()
End Using
response.Close()
End Using
Response.Redirect("~/Test.pdf")
This code runs perfectly from VS2012 because the Test.pdf file is created where the .sln file resides. But when uploaded in web hosting it shows the error that :
The remote server returned an error: (550) File unavailable (e.g., file not found, no access).
I also tried..
Dim localFile As String = HttpContext.Current.Server.MapPath("~/Test.pdf")
Dim localfile As String = HostingEnvironment.MapPath("~/Test.pdf")
But all in vein..
Please help. Thanks..
I have a asp.net web site where the user chooses some files with a fileUpload Control. Then the files need to be posted to another server
My domain is [http://www.mydomain.com]
The address where i have to upload the files is something like: [https://www.externaldomain.com/upload.ashx?asd2t423eqwdq]
I have tried the following:
Dim uploadedFiles As HttpFileCollection = Request.Files
Dim userPostedFile As HttpPostedFile = uploadedFiles(0)
Dim filePath As String
filePath = "https://www.externaldomain.com/upload.ashx?asd2t423eqwdq" & "/" & userPostedFile.FileName
userPostedFile.SaveAs(filePath)
But i get an error:
The SaveAs method is configured to require a rooted path, and the path 'https://www.externaldomain.com/upload.ashx?asd2t423eqwdq/Core CSS 3.pdf' is not rooted
I searched the internet, but all i could find were examples on how to upload to the page's server.
EDIT:
I used HttpWebRequest to access the link and it partialy worked. I also need to send 2 POST parameters, username and password.
This is how my code looks like now:
Dim link As String = "https://www.externaldomain.com/upload.ashx?e9879cc77c764220ae80"
Dim req As HttpWebRequest = WebRequest.Create(link)
Dim boundary As String = "-----"
req.ContentType = "multipart/form-data; boundary=" + boundary
req.Method = "POST"
Dim username As String = "test"
Dim userpass As String = "123456"
Dim credentials() As Byte = Encoding.UTF8.GetBytes("username=" & username & "&password=" & userpass & "--\r\n" & boundary & "--\r\n")
Dim separators() As Byte = Encoding.UTF8.GetBytes("--" + boundary + "--\r\n")
Dim uploadedFiles As HttpFileCollection = Request.Files //this is where i take the file that the user wants to upload
Dim userPostedFile As HttpPostedFile = uploadedFiles(0)
//i convert the file to a byte array
Dim binaryReader As IO.BinaryReader
Dim fileBytes() As Byte
binaryReader = New BinaryReader(userPostedFile.InputStream)
fileBytes = binaryReader.ReadBytes(userPostedFile.ContentLength)
//'get the request length
req.ContentLength += credentials.Length
req.ContentLength += userPostedFile.ContentLength
req.ContentLength += separators.Length
req.ContentLength += 1
Dim dataStream As Stream
dataStream = req.GetRequestStream
dataStream.Write(credentials, 0, credentials.Length)
dataStream.Write(separators, 0, separators.Length)
dataStream.Write(fileBytes, 0, fileBytes.Length)
dataStream.Close()
Dim response As HttpWebResponse = req.GetResponse
The error i get is "forbidden". The username and password are 100% correct. I think the problem is that i do not create the request correctly. If i post only the credentials i get the error saying that i have no file...
Any ideas?
Eventually I used the code provided here http://aspnetupload.com/
I compiled it into a dll and added a reference to my solution.
It works :)