As per Attachment of properties.jpg , we want to set that properties (Height, Width, dpix and dpiy )while tiff generation.Please Find Attachment of Sample File.
Sample.zip (141.9 KB)...and DpiX, DpiY: Project project = new Project("test.mpp"); ImageSaveOptions...= new SizeF(1200F, 900F); project.Save("output.tiff", saveOptions);...