![]() This will give you every HttpFileUpload in the request, regardless of if you use a or a FileUpload control. You can get to each uploaded file in a postback by using Request.Files. Using the input tag, you’ll have to do a bit more work to get to the file bytes. You’ll get no added info about the path from using a basic tag. The FileUpload control uses the tag behind the covers. What about the normal file uploads? I don’t like the FileUpload control. The FileUpload control has a FileContent property that gives you a stream to the file. Now I want to do some processing on the uploaded file. The FileUpload control ha a FileBytes property that gives you an array of bytes with all the contents of the file. If I don’t have the file location, how do I get the array of bytes? How do I use File.ReadAllBytes if I don’t have a path? Huh? Huh? I wanna save it to a database as an array of bytes. Ok smarty pants…saving to the file system is old school. If you wish to append a unique key to each upload, you can use something like Guid.NewGuid().ToString() –or any other technique you want. If you wish to provide a different username, you can do that just by changing the parameter. So, you can do something like this to save the uploaded file to the uploads folder in the root of your website:įileUpload1.SaveAs(Server.MapPath(“~/uploads/”) System.IO.Path.GetFilename(fileUpload1.FileName)) Just make sure asp.net has permissions to write to that path. You can use that method to save the file to any path using any filename you want. The FileUpload control has a SaveAs(string path) method. Wait…how do I store the uploaded file then? The uploaded file is uploaded to a temp location on the server. Ok…err…So where does my uploaded file go to? Hence, this can be considered a security flaw. Even if the contents were secure and not the folder name, you wouldn’t want to make it easier on anyone to get to them. Now think if you had a folder with some secure info in the name. The worst case scenario would be a few blushes. That’s private info and would be embarrassing if leaked. For example, if for some reason you had a pic with the path D:\My Racy Photos With X\pic112.jpg (which may be an official photo for whatever reason) and you upload that to the office server, you wouldn’t want your boss (or anyone else) to know that you have a folder called “My Racy Photos With X” on your pc. Them FF guys think that letting the server know about the folder structure of a user’s machine is a serious breach of security. It was done to enable easier automation of intranet apps where file operations across the network could be accomplished easier. This is a decision made by the creators of IE. The server may not even have an M drive with a pics folder. The FileName property will then hold something like M:/pics/pic1.png. The user may have an M drive with a pics folder. It’s the path you see in the file upload controls text box. It holds the path to the uploaded file on the machine of the user using the website, not the server. WHOAH…Hang on a minute…the client machine? NOT THE PATH OF THE UPLOADED FILE ON THE SERVER. It’s the full path of the uploaded file on the client’s machine. Read that again, and again, and one more time. In IE7 and earlier (possibly IE8 too – I’ll refer to all of them as IE from here on) it holds THE FULL PATH TO THE FILE ON THE CLIENT’S MACHINE. The FileName property holds the name of the uploaded file. A lot of you guys are asking how to get the full path from the file upload control. ![]() Hence, people see discrepancies among the browsers in terms of the FileName property. In some versions of Internet Explorer (perhaps all versions, but at least up until v7), the FileName property holds a full path. In FireFox (FF) and some other standards compliant browsers, the filename only holds the name of the file. The FileUpload control has a FileName property. It’s getting tedious so I thought I’d make a blog post about it. I’ve answered this question about five times in the last few days at the forums.
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