Asp code file upload

Collectives on Stack Overflow. Learn more. Uploading a file in classic asp Ask Question. Asked 6 years, 1 month ago. Active 6 years ago. Viewed 12k times. I've always used the following script to upload files in classic asp, but it stopped working giving me this error vbscript runtime error a01a8 object required 'Item Item "key".

Improve this question. Mattia Nocerino Mattia Nocerino 1, 1 1 gold badge 12 12 silver badges 32 32 bronze badges. Have you added the comments manually? Yeah i did, because if not the question layout would look terrible — Mattia Nocerino. I've adjusted it to use VBScript comments. Show 2 more comments. Active Oldest Votes. Fix 1 - Uninstall "KB Cumulative security update for IE11" Fix 2 - Copy all byte arrays into a string of byte values and work against that, or provide a substitute for instrb that does its own iteration over the array.

When you are searching a byte array Such as Response. When you are searching for a single byte If you are searching a string, or if you are searching for a multibyte pattern, then InstrB works properly. On working systems it will return "5, 5, 5" Hoping for a fix. Some of this old code is running on systems I don't have access to.

The action method works directly with the Request property. A MultipartReader is used to read each section. After the multipart sections are read, the contents of the KeyValueAccumulator are used to bind the form data to a model type.

The complete StreamingController. UploadDatabase method for streaming to a database with EF Core:. UploadPhysical method for streaming to a physical location:. In the sample app, validation checks are handled by FileHelpers. The sample app's FileHelpers class demonstrates a several checks for buffered IFormFile and streamed file uploads. For processing streamed files, see the ProcessStreamedFile method in the same file.

The validation processing methods demonstrated in the sample app don't scan the content of uploaded files. Although the topic sample provides a working example of validation techniques, don't implement the FileHelpers class in a production app unless you:. Never indiscriminately implement security code in an app without addressing these requirements.

Scanning files is demanding on server resources in high volume scenarios. If request processing performance is diminished due to file scanning, consider offloading the scanning work to a background service , possibly a service running on a server different from the app's server. Typically, uploaded files are held in a quarantined area until the background virus scanner checks them.

When a file passes, the file is moved to the normal file storage location. These steps are usually performed in conjunction with a database record that indicates the scanning status of a file.

By using such an approach, the app and app server remain focused on responding to requests. The uploaded file's extension should be checked against a list of permitted extensions. For example:. A file's signature is determined by the first few bytes at the start of a file. These bytes can be used to indicate if the extension matches the content of the file. The sample app checks file signatures for a few common file types.

In the following example, the file signature for a JPEG image is checked against the file:. To obtain additional file signatures, see the File Signatures Database and official file specifications.

Never use a client-supplied file name for saving a file to physical storage. Create a safe file name for the file using Path. GetRandomFileName or Path. GetTempFileName to create a full path including the file name for temporary storage. Outside of Razor, always HtmlEncode file name content from a user's request. Many implementations must include a check that the file exists; otherwise, the file is overwritten by a file of the same name.

Supply additional logic to meet your app's specifications. In the sample app, the size of the file is limited to 2 MB indicated in bytes.

The limit is supplied via Configuration from the appsettings. MultipartBodyLengthLimit sets the limit for the length of each multipart body. Form sections that exceed this limit throw an InvalidDataException when parsed.

The default is ,, MB. ConfigureServices :. Below is the output of your code. It has a file upload control that allows users to browse and select a file from the local storage.

The code-behind file has a SaveAs function to the FileUpload object. This method uploads the contents of the file and saves them to the specified directory. The above is the landing page of your application. Choose a file by clicking on the Choose File button. Once you have chosen a file, the file name is displayed alongside the FileUpoad control. This method contains the SaveAs call to the server. Notice that the file is indeed saved at the specified path in the server.

In our case, our local storage is the server as we are running the application on localhost. To get more advanced training on some of the advanced properties and code behind logics, the official Microsoft documentation is highly recommended. This is a guide to the ASP. NET FileUpload. Here we discuss the introduction, properties, and various examples of ASP.

You may also have a look at the following articles to learn more —. Submit Next Question. By signing up, you agree to our Terms of Use and Privacy Policy.

Privacy policy. This step-by-step article discusses how to upload an existing image file from your local hard disk drive to a Web site. An Input control is used to upload an image from your local computer.

This file that is being uploaded is validated against the server to make sure that you do not overwrite an existing file that is already been uploaded. The uploaded file is validated if it exists on the server. This article uses the EncType attribute of the form to achieve the functionality.

On the File menu, point to New , and then click Project. Under Templates , click ASP. NET Web Application. NET Web Site. WebServerName is a placeholder for the name of your Web server.