FileEdit

The FileEdit component provides file upload and download capabilities for Dataverse file columns. It supports drag-and-drop and displays the current file name when a file is attached.

<FileEdit ColumnName="ppp_contract" />

Max File Size

Use MaxFileSize to set the maximum allowed file size in bytes. Files exceeding this limit are rejected before upload.

<FileEdit ColumnName="ppp_contract" MaxFileSize="5242880" />

File Upload Pre-Processing

If you need to pre-process files before they are saved to Dataverse, use the OnFileUploaded callback to hook into the upload process and apply custom handling to the file.

// In your startup class call the following:
services.Configure<FileSaveOptions>(options => {
    // Files can be saved to a temporary folder on the server or to an in-memory stream.
    options.SaveMode = FileSaveMode.SaveToTemporaryFolder;

    // Specify your pre-process handler
    options.OnFileUploaded = async (columnFileInfo) => {
        // Perform your processing here
        var mutatedFileData = SomeMethodToManipulateTheByteArray(columnFileInfo.FileInfo.FileData);
        return new FileInfo { FileName = "New File Name", FileData = mutatedFileData };
    };
});