Note: The File for WebVI library is a file handling library for WebVIs that supports uploading and downloading of binary and text files, webcam image capturing, base64 encoding / decoding, etc.

New projects should consider using the File for WebVI library instead.

---

DownloadUploadAFileWebVI

Library to upload or download a text file to and from a LabVIEW NXG WebVI.

Setup

1. Download the Download Upload Library.gcomp and place it in your Web Application project directory.

2. In LabVIEW NXG, include the Download Upload Library.gcomp in the project pane. From your block diagram you will now have access to Download a File VI and Upload a File VI.

Using the Upload a File VI

1. Drop a control on the front panel (for example a button) and in the configuration pane set the HTML class attribute to a custom class, for example my-upload-button.

   

2. On the block diagram drop an Upload a File VI and into the selector terminal pass in the class name modified as a CSS selector. For example, the class name my-upload-button would become the selector string .my-upload-button. Notice the . prefix at the start of the class name.