![]() ![]() Achieving this is simple with the flexibility of the web.config: ![]() It is best practice to override specific directories in the application, not the entire application. The purpose of having a maximum request size limit, is protecting the weib site. There is always drawbacks or things to look out for when overriding the default setting on many items in the nfig file. The default 4MB limit is set in the nfig file, but can be overriden in the web applications web.config.įor instance, to expand the upload limit to 20MB, you'd do this: Increasing the maximum upload file size is not a difficult task but developers need to know the best approach to overriding the default. If a user uploads a file larger than 4MB, they'll get an error message: "Maximum request length exceeded." in which an attacker submitted one or more huge files which overwhelmed server resources. Developers should understand the default maximum file size of 4MB is done not randomly but intentionally to prevent denial of service attacks: Jon points out uploading large files via the FileUpload control can be tricky. One of the biggest problems with the FileUpload control is getting it to handle large files which are bigger than the default 4MB.Ī recent article from Jon Galloway, a Microsoft ASP.NET MVP, gave a nice overview how developers can take advantage of the FileUpload control to allow uploads of virtually any size.
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