function clickElement(element: HTMLElement): void { element.click(); } function downloadFromUrl(options: { url: string, fileName?: string }): void { const anchorElement = document.createElement('a'); anchorElement.href = options.url; anchorElement.download = options.fileName ?? ''; anchorElement.click(); anchorElement.remove(); } function downloadFromByteArray(options: { byteArray: Uint8Array | string, fileName: string, contentType: string }): void { const url = typeof (options.byteArray) === 'string' ? // .NET 5 or earlier, the byte array in .NET is encoded to base64 string when it passes to JavaScript. // In that case, that base64 encoded string can be pass to the browser as a "data URL" directly. "data:" + options.contentType + ";base64," + options.byteArray : // .NET 6 or later, the byte array in .NET is passed to JavaScript as an UInt8Array efficiently. // - https://docs.microsoft.com/en-us/dotnet/core/compatibility/aspnet-core/6.0/byte-array-interop // In that case, the UInt8Array can be converted to an object URL and passed to the browser. // But don't forget to revoke the object URL when it is no longer needed. URL.createObjectURL(new Blob([options.byteArray], { type: options.contentType })) downloadFromUrl({ url: url, fileName: options.fileName }); if (typeof (options.byteArray) !== 'string') URL.revokeObjectURL(url); }