Download File [portable] | Xojo Web
// Create a property on your WebPage: MyTextFile As WebFile MyTextFile = New WebFile MyTextFile.MimeType = "text/plain" MyTextFile.FileName = "UserNotes.txt" MyTextFile.Data = "This content was generated at: " + DateTime.Now.ToString MyTextFile.ForceDownload = True System.GotoURL(MyTextFile.URL) Use code with caution. Advanced Considerations 1. Performance and Memory Management
Xojo web apps are often not the ideal choice for serving massive files (e.g., several gigabytes). For very large files, it is often more efficient to use a dedicated web server like Apache or IIS to deliver the file, or to use cloud storage like Amazon S3, providing the user with a direct link to that external resource. 3. Security
Define a property (e.g., DownloadFile As WebFile ) in your WebPage or Session . xojo web download file
If you have a file already saved on your server's storage, use the WebFile.Open method.
Trigger the download using System.GotoURL(DownloadFile.URL) . // Create a property on your WebPage: MyTextFile
You can also generate data on-the-fly, such as a CSV or a text file, without ever saving it to the server's disk.
: Can hold raw data directly in memory, which is useful for small, dynamically generated files. Method 1: Downloading an Existing File from Disk For very large files, it is often more
: The WebFile instance must remain in memory until the download is complete. If you create it as a local variable inside a method, it will be destroyed as soon as the method finishes, causing the download to fail.