Asp Component File Upload

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Asp Component File Upload Average ratng: 4,1/5 6956 votes

ABCUpload ™ ASP 4.6 ABCUpload is an ActiveX component that allows you to upload files from a web browser to your IIS web server. It requires no client side software and operates on the server via standard multipart HTML forms as defined in RFC 1867.

  1. Asp File Upload Example
  2. Asp File Upload Code
  3. Free Asp Upload
  4. Component File

The second file is the Angular component to handle the upload and call the server-side web API. Add the Angular component named upload.component.ts with the following code, Next, we need to add the “Upload” link in the navigation bar. On my broken systems, this function always returns a 1, even though there is no byte value 13 at position 1. It returns 1 for any value when searching a byte array. The classic ASP file upload components, which is why we're all on this thread, run into this situation because they're parsing that byte array looking for delimiters. *New FileUp installer is a 64 bit component with improved support for Windows 2008 and 2012 (IIS 7, 7.5 and 8) and all 64-bit operating systems. File Upload - Overview The igUpload is an upload control that allows you to upload any type of files, sending them from the browser to the server. This sample uses CTP (Community Technical Preview) features. Huge ASP upload is easy to use, hi-performance ASP file upload component with progress bar indicator. This component lets you upload multiple files with size up to 4GB to a disk or a database along with another form fields. How to upload files with asp-classic. Long time since I've done that but we used an upload without third party components, just two vbscript classes (solution.

Expert2.5K+
Have you ever wanted to upload files through a form and thought, 'I'd really like to use ASP, it surely has that capability, but the tutorial I used to learn ASP didn't mention how to do this.'? Have you looked around trying to find simple solutions but didn't want to wade through pages of complex code? Have you balked at paying for premade solutions that are probably overkill for your particular project?
I'd like to walk you through the basic steps right here. Yes, it is fairly easy, and yes you can do it all with only ASP. Is it straight forward? Not exactly, but if you know the basics of manipulating long strings and using the scripting.fileSystemObject then you can do it.
Note
Much of this code has been adapted from an article from visualBuilder.com which uploads and displays files. I have made the code more linear and added the subroutine which saves the file.
Step 1: Set up
First there are two things you need to get ready before you actually work on the upload. You need a form and you need a folder. By 'folder' I mean you need a folder for which the anonymous web user has permission to save files. I suggest this be a sub-folder off of your main web directory and that you not give IIS permission to execute scripts from this folder (to help prevent malicious code uploads). In my example I am using a folder called 'temp' right off of my root web directory.
By 'form' you may think I am being overly obvious, but there are actually a couple changes you may need to make to your basic form in order to accept file uploads. The first is a change in your form tag:
  1. <form
  2. action='upload.asp' method='post' enctype='multipart/form-data'>
Notice the 'enctype' attribute. If you don't have this attribute set to 'multipart/form-data' then only the name of the file will be sent to the handler, in my case named 'upload.asp'. Then of course you need an input of type='file' to accept the upload:
  1. <input type='file' name='myFileToUpload' accept='image/*'>
Notice the optional 'accept' attribute which you may use to filter out unacceptable file types. I have set this to accept only files with image MIME-types. This can of course be expanded or omitted completely. finish off your form in any other way you want, then continue on to the next step.
Step 2: Opening binary data posted through your form
Unlike regular form inputs with which you have likely worked in the past, files are sent as binary data and can't be manipulated exactly as a string. Also, different browsers send these files in slightly different ways, so it is probably easiest to open up all of the data posted and search through it to find how the different inputs are separated, then try to figure out which is the file. Notice that as you work with binary data, you use functions that look a lot like string manipulation functions except they all end with the letter 'B'. They work just the same, but they are meant to handle binary data. Try this:
  1. <%
  2. Dim posi, allData, delimiter, newLineB
  3. 'put the whole form posted into 'allData'
  4. allData = request.BinaryRead(Request.TotalBytes)
  5. 'find the first new line character in allData
  6. newLineB = chrB(13) & chrB(10)
  7. posi = instrB(1, allData, newLineB)
  8. 'find the string which separates the different inputs
  9. delimiter = midB(allData, 1, posi-1)
  10. 'remove first delimiter and add a new line character to the end
  11. allData = midB(allData, posi + 2, lenB(allData) - lenB(delimiter) - 2 - 4)
  12. allData = allData & newLineB %>
Step 3: Find the file data:
What you now have is a variable named 'delimiter' which holds the separator the browser used to separate different form inputs (When I tested this, I used firefox and I wrote this variable after translating it to text. It turned out to be a long series of dashes followed by a 13-digit number. I have no idea what it means) and one called 'allData' which has all of the rest of the data posted to the handler. If you were to translate this data to a string and write it to the screen it would look something like this:
  1. Content-Disposition: form-data; name='myTextInput'
  2. hello world
  3. -----------------------------4564239462453
  4. Content-Disposition: form-data; name='myFileToUpload'; filename='pic.jpg'
  5. Content-Type: image/jpeg
  6. *** a whole bunch of nonsense characters representing all the binary data of the file ***
  7. -----------------------------4564239462453
  8. Content-Disposition: form-data; name='submit'
  9. submit
  10. -----------------------------4564239462453--
So, how do I look through this? First notice that the first line of each input is the content disposition. this includes the file name, so don't throw it away. The second line lists the content type, but it is blank unless this input is a file. So I'm going to scroll through the inputs and discard them unless this second line has a content type. I'm going to use one function which converts binary data to the equivalent ascii characters, and a subroutine which saves the file.
  1. <!DOCTYPE html PUBLIC '-//W3C//DTD HTML 4.01 Transitional//EN'
  2. 'http://www.w3.org/TR/html4/loose.dtd'>
  3. <HTML><head><title>asp uploader</title></head><body>
  4. <%
  5. 'find the file input, discard all others
  6. dim lstart, lfinish, disposition, fileType, content
  7. do while lenB(allData) > 0 'we're going to whittle allData down to nothing
  8. lstart = 1
  9. lfinish = instrB(1, allData, newLineB)
  10. disposition = converter(midB(allData, lstart, lfinish - lstart))
  11. lstart = lfinish + 2
  12. If chr(ascB(midB(allData, lstart, 1))) = 'C' then 'this input is a file
  13. lfinish = instrB(lstart, allData, newLineB & newLineB)
  14. 'search for 2 new line characters, meaning the end of the
  15. 'content-type, saves it as fileType
  16. fileType = trim(converter(midB(allData, lstart, lfinish - lstart)))
  17. 'set the rest of this input as 'content'
  18. posi = instrB(allData, newLineB & delimiter & newLineB)
  19. content = midB(allData, lfinish + 4, posi-lfinish-4)
  20. 'display data for the file
  21. response.write '<b>Content Disposition</b><br>' & vbNewLine
  22. response.write disposition
  23. response.write '<br>' & vbNewLine
  24. response.write '<b>Content Type</b><br>' & vbNewline
  25. response.write fileType
  26. response.write '<br>' & vbNewLine
  27. response.write '<b>Content</b><br>'
  28. 'save file AND display it as either an <img> or <textarea>
  29. saveFile content, disposition, fileType
  30. Response.Write '<br>'
  31. Response.Write '<br>'& vbNewLine
  32. End If
  33. 'find the next delimiter in order to cut the first input from allData
  34. posi = instrB(1, allData, newLineB & delimiter & newLineB)
  35. allData = midB(allData, posi + 2 + lenB(delimiter) + 2)
  36. Loop
  37. Function converter(toConvert)
  38. Dim output
  39. Dim x
  40. x = 1
  41. output = '
  42. 'convert one character at a time to Ascii and add it to the output
  43. do while x <= lenB(toConvert)
  44. output = output & chr(ascB(midB(toConvert, x, 1)))
  45. x = x + 1
  46. loop
  47. converter = output
  48. end function
  49. sub saveFile(content, disp, typ)
  50. dim objFSO, objTXT, path, fileName
  51. 'build the path to save the file
  52. path = request.serverVariables('appl_physical_path') & 'temp'
  53. 'sometimes the filename has ' which affects how I save it
  54. if instr(disp, ') > 0 then
  55. fileName = mid(disp, instrRev(disp, '), len(disp)-instrRev(disp, '))
  56. else
  57. fileName = ' & mid(disp, instr(disp, 'filename=')+10, len(disp)-instr(disp, 'filename=')-10)
  58. end if
  59. path = path & fileName
  60. 'save file with normal FSO and textStream methods
  61. set objFSO = server.createObject('scripting.fileSystemObject')
  62. set objTXT = objFSO.openTextFile (path, 2, True)
  63. objTXT.write converter(content)
  64. response.write '<br>(File saved as: ' & path & ')<br>' & vbNewLine
  65. 'display the file
  66. if left(typ, 19) = 'Content-Type: image' then 'file is an image
  67. 'write an image tag to the browser
  68. response.write '<img src='/temp' & fileName & '>'&vbNewLine
  69. else 'file isn't an image
  70. 'write the contents of the file to a textarea in the browser
  71. response.write '<textarea rows='10' cols='50' editable='false'>'
  72. response.binaryWrite content
  73. response.write '</textarea>' & vbNewline
  74. end if
  75. end sub
  76. %>
  77. </body>
Notice that I convert the content of the file to ascii characters and use a textstream to save it. Yes this does work for binary files. I tested it with several image files. There is a separate object called an ADO.STREAM which is supposed to be used for moving around binary files, but I couldn't get it to work for this application, and since the plain ol' textstream works OK, I will leave it like this.
Please give me any comments. I look forward to any feedback.
Jared
Active3 years, 7 months ago

Yes I am using Classic ASP, not by choice I am supporting a Legacy application. Objective: I need to have a form page that submits to another .asp page that will upload the file and store it on the server in a certain directory such as '/uploads'. I'm not real familiar with asp or asp.net so I am very new to this. I've created a test prototype:

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Form page:

Processing page:

The problem is that everytime I try to upload or run the script I get this error:

Obviously I'm not mapping correctly to the file and I think the major reason I am getting stuck is that in the first parameter of the MoveFile method I am not mapping to the file correctly. Can anyone tell me how I should be referencing the file or if I am doing it wrong?

Thanks in advance I would really appreciate the help I've searched all over and everything I find related to classic asp and uploading files are classes that you can purchase and I don't want to do that.

Tom Bird

Asp File Upload Example

Tom Bird
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2 Answers

Have a look at a solution like Pure ASP Upload, it should help you. In classic ASP, you cannot directly access Request.Form when data is sent in multipart/form-data, so you have the choice of using a third party component like ASPUpload or a ASP class that does the work of parsing the request for you and exposing methods to save the file.

MaxiWheatMaxiWheat

Asp File Upload Code

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When moving files you must also specify the file names.

Change:

To:

Assuming 'fileName' is the correct variable for the file name and not 'file' variable above.

Free Asp Upload

silversilver

Component File

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