Using DropNet 1.10.23.0 RestSharp 105.1.0.0
On UploadFile getting:

{"Method not found: 'RestSharp.IRestRequest RestSharp.RestRequest.AddFile(System.String, Byte[], System.String)'."}

{"Method not found: 'RestSharp.IRestRequest RestSharp.RestRequest.AddFile(System.String, System.Action`1<System.IO.Stream>, System.String)'."}

Downloaded DropNet sources and changed in methods:

public RestRequest CreateUploadFileRequest(string path, string filename, byte[] fileData, string root, bool overwrite, string parent_revision)

public RestRequest CreateUploadFileRequest(string path, string filename, Stream fileStream, string root, bool overwrite, string parent_revision)

request.AddFile("file", fileData, filename);

Added parameter, and it started working.

request.AddFile("file", fileData, filename,"");

DropNet 1.10.23.0 not compatable with RestSharp 105.1.0.0?

Also FileUploadPUT returns empty metadata.