Need Document about Microsoft.Build.Engine

Have you had a look at this?

Also...if you need to do anything with the Project class, all of the methods map pretty directly to the XML format used for .csproj or .contentproj files. It's not too hard too look at an existing file and figure out what you need to do to add a item or something similar.

I've already checked that one.
But that sample is simple that it loads only one model , and what's worse, it generates .xnb file every time when loading model.
The .xnb file generated is temporary , and in my project , i have to load a scene , so there is no need to generate .xnb file for each model which is a waste of time.
And there is another problem, suppose i want to generate the .xnb file for Model.fbx, i don't even know which are the generated file because i have no idea on the textures of the model if i don't parse the fbx file myself!!