将C ++结构编组到C＃的最有效方法是什么？

I am about to begin reading tons of binary files, each with 1000 or more records. New files are added constantly so I'm writing a Windows service to monitor the directories and process new files as they are received. The files were created with a c++ program. I've recreated the struct definitions in c# and can read the data fine, but I'm concerned that the way I'm doing it will eventually kill my application.I am about to begin reading tons of binary file