Asp file download

You cal also use the File class for file processing. Please see the below example to achieve the same. As we know FileResult is an abstract base class. FileStreamResult — Sends binary content to the response by using a Stream instance. Here you have a stream and want to return stream content as a file. FileContentResult — Sends the contents of a binary file to the response.

Here you have a byte array and want to return byte content as a file. You can simply append a query string variable to the Response. Redirect , like this:. Then in the actual handler code you can use the Request object in the HttpContext to grab the query string variable value, like this:. Note - it is common to pass a filename as a query string parameter to suggest to the user what the file actually is, in which case they can override that name value with Save As Further to Karl Anderson solution, you could put your parameters into session information and then clear them after response.

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Collectives on Stack Overflow. Learn more. NET file download from server Ask Question. Asked 8 years, 3 months ago. Active 1 year, 4 months ago. Viewed k times. Response; response. ClearContent ; response. Clear ; response. MapPath "FileDownload. Flush ; response. End ;. For this demonstration, the app creates a 50 KB file of random data from a new byte array new byte[]. The bytes are wrapped with a MemoryStream to serve as the example's dynamically-generated binary file:.

The JavaScript downloadFileFromStream function accepts the file name and data stream and triggers the client-side download. The function performs the following steps:. The fileName and object url are passed to triggerFileDownload , which performs the following steps:. At this point, the file download is triggered. This is an important step to ensure memory isn't leaked on the client. In Blazor WebAssembly apps, file data is streamed directly from.

IO; using System. Linq; using System. Web; using System. UI; using System. AddHeader "Content-Length", file. TransmitFile file. FullName ; Response. Next Topic ASP. NET Cookie. Reinforcement Learning. R Programming. React Native.