CFile file;
CString str;
TCHAR c[1024]={0}; //可以先计算文件尺寸,再根据尺寸用new的方式申请内存
file.Open("D://PROJECT//PROGRAM//defrule.clp",CFile::modeReadWrite);
file.Read(c,1024);
str.Format("%s",c);
str.Replace("pipe-soil-AC","8");
file.SetLength(0);
file.Write(str,str.GetLength());
file.Close();