Large File Download

Hello,

I used Dropbox SDK for .NET to download a large file of size 1.3 GB but the program hung.

using (var response = await dbx.Files.DownloadAsync(path + "/" + file))
{
    byte[] buffer = await response.GetContentAsByteArrayAsync();
}

I then used Dropbox REST API - "https://content.dropboxapi.com/2/files/download"
with Authorization and Dropbox-API-Arg (with path as argument) as headers.
For smaller files the Rest Api worked, but for the 1.3 GB file download, the program threw "Out of Memory Exception".

How do I perform a download of such a larger file with size > 1GB.

Thanks,
Gagan