Upload File From Asp
Classic ASP Examples(Classic ASP) Upload Files to a Web Server - Simplest ExampleThis is the simplest example for uploading some files to a web server. The BlockingUpload call is synchronous and returns when the upload is finished (or failed).A server-side C# example showing how to receive an upload is located at Chilkat ActiveX Downloads<%set upload = Server.CreateObject('Chilkat950.Upload')' Specify the page (ASP, ASP.NET, Perl, Python, Ruby, CGI, etc) ' that will receive and process the HTTP Upload.upload.
Hostname = 'www.mywebserver.com'upload. Path = '/receiveUpload.aspx' ' Add one or more files to be uploaded.upload. AddFileReference 'file1', 'dude.gif'upload. AddFileReference 'file2', 'swordfish.xml'upload. AddFileReference 'file3', 'sample.doc' ' Do the upload.
The method returns when the upload ' is completed. ' This component also includes asynchronous upload capability, ' which is demonstrated in another example.success = upload. BlockingUploadIf (success < 1) Then Response.Write '
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.NoteMuch of this code has been adapted from an article from which uploads and displays files. I have made the code more linear and added the subroutine which saves the file.Step 1: Set upFirst 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. 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 formUnlike 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. Content-Disposition: form-data; name='myTextInput'.hello world.-453.Content-Disposition: form-data; name='myFileToUpload'; filename='pic.jpg'.Content-Type: image/jpeg. a whole bunch of nonsense characters representing all the binary data of the file.-453.Content-Disposition: form-data; name='submit'.submit.-453-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. Thank you,for the code - it worked indeed, even was capable of processing multipple files. But only problem with it seems to be that it gets terribly slow with file sizes larger than 100 KB. And I could not process (upload) files larger than some 200 KB. Also it seemed that there were differences between image types, even though I did not make any systematic research with this.
Browsers I used were IE7 and FireFox, both worked approximately the same.If you could make the script faster and being capable of uploading considerably larger files, it would be important piece of code indeed!Regards,Matti. I was aware that there was a file size limit, both with using the and on the server. Check your server's file upload limit (I'm not even sure where to look, but it's there somewhere) and I will research ways to get around this limitation in the script. I noticed that many of the pre-coded solutions I found on the web said that they had a way around this problem.image type issues- this is most likely a display issue rather than an upload issue. The script just says to display any image file (whereas any other file type is not displayed) regardless of MIME type, and it is possible that some files of type 'Image' will not display well in a browser. The display happens after the upload, so even if the display fails it is possible that the upload worked.I will consider working on speed.
I'll have to give it some thought. It's possible that the best way to improve speed would be to just switch to a compiled rather than scripted page, perhaps using ASP.NETThanks for your comments, and I will try to revise.Jared. Jared,I'll wait with interest in what you will come up with! - This area of asp-upload without third party components (or even with them) have produced very much headache for many asp-developers me including some times ago.
So, I am eager to see if someone can really create a simple or even really readily workable solution for this. Well, I know, there already are many pure asp-upload-classes I have also tested, of which some work relatively well (with the exception usual of file size limit pronlem). But as you neetly put in your intro to your code, they are are tend to be very complex in comparison your relatively genious solution!
- Inspiration for your work!Regards,MattiMatti,hmm. I was aware that there was a file size limit, both with using the and on the server. Check your server's file upload limit (I'm not even sure where to look, but it's there somewhere) and I will research ways to get around this limitation in the script. I noticed that many of the pre-coded solutions I found on the web said that they had a way around this problem.image type issues- this is most likely a display issue rather than an upload issue. The script just says to display any image file (whereas any other file type is not displayed) regardless of MIME type, and it is possible that some files of type 'Image' will not display well in a browser. The display happens after the upload, so even if the display fails it is possible that the upload worked.I will consider working on speed. I'll have to give it some thought.
It's possible that the best way to improve speed would be to just switch to a compiled rather than scripted page, perhaps using ASP.NETThanks for your comments, and I will try to revise.Jared. Here is fine asp-upload class and its explanation in case you do not have proper third order com-component available in your server.here you can download its source:after being capable of uploding a file into your server folder (uploaded) you can simply write:<% response.write '
This wouldn't necessarily be very tricky. I could probably get it to work, but it seems like more trouble than it's worth, and I'm not really a javascript expert, therefore, I won't reply with a code solution. However, the javascript forum might be able to come up with a concise solution.Jared. Hi Jared,Im new in ASP. I really like that code of yours in uploading file using asp.Pls bear with me. I replicated your code and when i run it, it showed the input control and a button 'browse'. So i was abel to select a file.
C# File Upload Example
But how can I execute or submit it so that the file i selected will then be copied to the specific location.Thanks!einnor91Not a bad question. First understand that there need to be two different files at work (as I set up the code, that is. It is possible to do it all on one file, but I prefer to separate them). The first file contains the form that the user sees. I did not try to write the entire code for the form page since I figured. it is not necessary to use any kind of ASP to write the form, HTML or any WYSIWYG HTML editor can write this code for you. I figured that it is if not necessary, then highly recommended to be HTML proficient before attempting anything with ASPI only mentioned a couple of things about the form page because the difficult part is the second page.
The first page is pretty standard HTML and it should only give you trouble if you are not HTML proficient. I highly recommend learning HTML before you try to do much more with ASP.That said, if you are not HTML proficient, how should you code the first page? Try this very basic form page.
Let me know if this helps.Jared.Protected Sub Button1Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click.FileUpload1.SaveAs(' & FileUpload1.FileName).End Sub.I Understand that you could have existing Classic ASP COdes but you could always have a single ASP.NET project with a single page just for the upload purpose.,and you could upload any kind of Files You feel like.The Only Additional Requirement is install Dot Net Framework 2.0.I have Cut Pasted all the sections below as it is in my test code:File:web.config.File:Default.aspx. <%@ Page Language='VB' AutoEventWireup='false' CodeFile='Default.aspx.vb' Inherits='Default'%.
Upload File From Raspberry
You might as well ask why we do anything with asp, it could be argued that just about anything can be done easier with.NETRather than try to answer that, allow me to point out that this forum is dedicated to 'classic' asp questions, so if someone asks me how to upload files (and many have) I will come up with an asp solution because it is the only answer appropriate for the location (besides saying 'maybe you should try.NET instead' and you already said that for me).And yes, I can come up with several reasons that I still use classic ASP rather than.NET.Jared. I was aware that there was a file size limit, both with using the and on the server. Check your server's file upload limit (I'm not even sure where to look, but it's there somewhere) and I will research ways to get around this limitation in the script.
Upload File From Usb
I noticed that many of the pre-coded solutions I found on the web said that they had a way around this problem.JaredHi,IIS 6.0 on Windows 2003 has a file named metabase.xml which resides in the folder C:Windowssystem32inetsrv. By default, this file has this entry:AspMaxRequestEntityAllowed = '204800'This limits upload size to 204,800 bytes. But my problem is that on some systems it is uploading successfully with size AspMaxRequestEntityAllowed = '204800' but on some other Request.Binaryread returns empty, though file were of same sizeare there any other IIS settings or antivirus or nay thing else that limits request.binaryreadmy os is win2003 serverDo you get this problem consistantly or sporadically?Thanks for your solution to the file size limit, btw. I was thinking that some browsers also limit upload sizes (the file input is one of the least consistantly handled HTML tags) and this might be what you are experiencing, but I'm not even sure where to check.Jared. Hate to bump old stuff but saw new referral to this thread.Using FSO is slow and resource intensive. I would recommend something that uses adodb.stream object for writing the files. I'm fairly certain it gets around the size issue and it's MUCH faster and less CPU intensive.you look at that chart you can see a speed comparison of using FSO vs ADO stream.
FSO being 'ASP Emporium' and 'ASP101'.I tried to get ado.stream going earlier because obviously the fso isn't the right way to go, I just couldn't ever get it to work, and since ASP really is a dying technology, I was happy to leave it at that.The size limitations we ran into all seemed to be in regards to the upload process, so I'm hesitant to think switching to ado.stream would make any difference with that issue.Jared.