FileUpload

FileUpload lets users upload a single attachment along with the form.

Specific Settings

Width

The upload control width (pixels or percent).

Required

When checked, a file must be uploaded before submitting.

Allowed File Types

Allowed upload extensions are configured via Upload Extensions in the General settings (available since 11.00.02):

• Separate multiple extensions with commas, e.g. jpg,png,pdf,docx.
• Leave empty to use the default list (20 common formats: images, audio, documents, archives, etc.).
• Web markup types such as svg, html and xml are always rejected and cannot be enabled.
• The front-end file picker and server-side validation stay in sync; rejected uploads return a specific reason (file name plus the allowed format list).

WARNING

If still restricted, also check the DNN global settings (Host → Configuration Manager → Allowable File Extensions) and the server's maxRequestSize. The single file size limit can be set via Max file size in the general settings.

Viewing Uploaded Files

• Administrators can view and download uploaded files in the Submission Records.
• Files can also be attached to the email notifications.
• Whether logged-in users may download attachments is controlled by Login User Download Attachment in the General settings.

Next Steps

• Multiple FileUpload — upload several files at once
• Field Types Overview