The following example demonstrates how to create a FileUpload control. . You can use the ContentType property to get the MIME content type of the file. tLength); int length = ; string fileName = ng(); string type = File. ContentType. = tType; C# code To get content type of a posted file of file upload control in ? 01 Wednesday.

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This closes the HttpPostedFile in the calling code. Then you can use it to check the file type. Accepting all file types is hardly a fire-able offense.

FileUpload control – The complete WebForms tutorial

NET translation for anyone else who might need it Add ” Name”SqlDbType. Ask our team at ASPForums.

Add ” Data”SqlDbType. We did face problem with some mac clients that did not send content type. The user can upload any kind of file, and the size of the file is only limited by the server configuration. Carlos Ferreira 2 What I have done in the past is to place them in a pending folder on the server, then at a given interval although it could be a called function following upload I run a small process that read the first few bytes of data.

Here is the VB. Close in the Finally block. Using con As New SqlConnection constr. This article has been fully translated into the following languages: The best way to do that is using the FileOpenDialog component to let the user choose a file neatly, postedvile adding filters to the component eg.


Hi, This is Mudassar Khan.

The only improvement Contenttyoe can think of is: Danish German Hindi Spanish. If it has, we use the FileUpload controls SaveAs method to save the file.

Fileupload image types validation C#

Also using a reg expression to filter the file type in Open file dialog is somewhat unreliable since any user can type for example. Jan 13, PDF Create a quick page with this code: The code samples and Pistedfile available at www. Don’t tell someone to read the manual. Why not just do reverse logic on the file extensions that are prohibited? Thanks for that code – it works perfectly.

C# code To get content type of a posted file of file upload control in

I would fire you for doing something like that. Fileuploadcontrpl clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Try using a nested if statement three levels deep to insure the file passes all the way through.

Please do not post code, scripts or snippets. Now what i ,as a user will do is change the extension of an exe or say a.

Post as a guest Name. I to faced the same problem. Content type is bad idea because if user does not have corresponding software installed, os will send wrong content type. Postdfile a look in a hex editor TextPad will work for example.


If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Try this Regular Expression Validator: If you ever find a site where somebody has already done this for the various file types available, please let me know!

Thanks in advance Regards Jatinder Walia. Getting the mime type from the file is possible by server side and black list the ones you don’t want.

Save Files to SQL Server Database using FileUpload Control

Its not as thorough, but it much easier to use and provides an equivalent output: Read theImage, 0, int FileUpload1. FileName ; if FileUpload1. Please note though that if a user changes a file extension, then that’s their problem not yours. Apple user may use OpenOffice, or some ffileuploadcontrol softwares to upload. FileUpload ContentType trickery Oct 14, Read the question carefully.

Once the UploadButton is clicked, we check to see if a file has been specified in the upload control. Is there somewhere where I can see other postedile