problem in file writting with onsavedocument

[tspga]

void CFileMgm::write(string fname, solutions databox)
{
  file1.open (fname.c_str(), ios::out);
 
 	if (file1.is_open())//if(file)+
	{
       file1<<"Population Size is : ";
       file1<<databox.pop_size;
   
       file1<<"Crossover Rate is : ";
       file1<<databox.crossover_rate;
   
       file1<<"Mutation Rate is : ";
       file1<<databox.mutation_rate;

       file1<<"Maximum fitness is: ";
       file1<<databox.fitnesses[0];

	     file1.close();
	}
	
	else
			  
  {
	 AfxMessageBox("Unable to open file");
			//cout<<"File does not exist";
			exit(0);
  }

i don't know why this code is unable to write any thing in file.

following is onsavedocument function

BOOL CTspGeneticAlgoDoc::OnSaveDocument(LPCTSTR lpszPathName) 
{
	

	string filename = (string) lpszPathName;
	CFileMgm mydatafile;
	mydatafile.write(filename,sol);

	
	return CDocument::OnSaveDocument(lpszPathName);
}