如何读取和写入一个结构文件使用C＃？

I can use write(&stName,sizeof(stName),&FileName) and define a same struct in other program to read the file(XXX.h) when i use C, But I want do the same use C# and I should not use the unsafe mode. How do to solve the problem?I can use write(&stName,sizeof(stName),&FileNam