If the selected file is of the type .jpg or .png then it will be assigned to the, The uploadHandler() method defines an instance of the. Upload() action decorated with these attributes: If you wish to set these limits for the entire application then modify you We will create this application using Visual Studio Code, which is a free IDE from Microsoft. Secondly, there is the usual problem of having to deal with out of memory issues when allowing external parties or users to upload buffered large files. To learn more, see our tips on writing great answers. The following code shows the The [RequestSizeLimit] This can be downloaded from. Use the InputFile component to read browser file data into .NET code. The structure FileUploadResponseData, for the metadata is shown: The implementation of the upload files method is shown: Before the files can be passed as a parameter to the method, you will need to include the following namespace in your source so that the IFormFile interface can be recognised: Please note that I have not included extensive checking for the upload. It will show one parameter, the file record id: When this is executed you will see the result as shown: There is also a Download file link. The file being uploaded will be stored in a table within a SQL server database. Thats the service that makes a decision whether a given request will be buffered or not on a per request basis. size. Open this folder in VSCode. Now we can test with a large-sized file (File size is 708 MB). Dealing with large files in ASP.NET Web API. For WEB API development, I am using the latest Visual Studio 2019 and the ASP.NET Core 3.1 Web Application template which is used for WEB API Creation. 44 Comments Uploading files in ASP.net core is largely the same as standard full framework MVC, with the large exception being how you can now stream large files. Dealing with large files in Web API and for that matter in any HTTP scenario, can be a bit troublesome and sometimes even lead to disastrous service outages, but if you know what you are doing there is no reason to be stressed about anything. This implementation will include just one table to store uploaded files. The razor markup that renders this page is shown below: Notice that the enctype attribute of the