What is the problem?
Hello, I want to upload byte array to octoprint. I am using c#. I have downloaded file from octoprint and saved it to byte array and now I want to upload this byte array with file to printer. Please, how can I do it?
I suggest to read the API docs that @fieldofview so kindly linked you. If you follow them your requests will no longer be malformed and your upload might actually succeed.