How to read several external .csv files

[KertLopper]

I'd like to use Script for reading information from external .csv files. 

If I know how many files exist and the name of the files it is easy with the code below. 

...but how to modify the file for smooth working 

- if I don't know how many files exist

- if I don't know the name of the files 

?

many thanks for help

void OnStart()
{
      int handle; string str;  string str1; 

  
      handle=FileOpen("AAA.csv", FILE_CSV|FILE_READ);  
      if(handle>0)
      {
       str=FileReadString(handle); 
       str1=FileReadString(handle);     
       printf("handle:" +handle + ";  str:"+str + ";  str1:" + str1);
      }

      handle=FileOpen("BBB.csv", FILE_CSV|FILE_READ);
      if(handle>0)
      {
       str=FileReadString(handle); 
       str1=FileReadString(handle); 
       printf("handle:" +handle + ";  str:"+str + ";  str1:" + str1);
      }
      

[Petr Nosek]

KertLopper:
 

...but how to modify the file for smooth working 

- if I don't know how many files exist

- if I don't know the name of the files 

Just use FileFindFirst(), FileFindNext() and FileFindClose()

[KertLopper]

Petr Nosek:

Just use FileFindFirst(), FileFindNext() and FileFindClose()

Thank you but I've rather thought about some loop. 

Does anyone have an idea how to build loops for this ?

[Petr Nosek]

KertLopper:

Thank you but I've rather thought about some loop. 

Does anyone have an idea how to build loops for this ?

Of course you have to use these functions in a loop. See the documentation https://www.mql5.com/en/docs/files/filefindfirst

[KertLopper]

Petr Nosek:
Of course you have to use these functions in a loop. See the documentation https://www.mql5.com/en/docs/files/filefindfirst

Thank You!

All works fine.

Full code below (if somebody will need it for ourself)

void OnStart()
{
   string file_name;
   string int_dir="";
   int    i=1;
   int handle; string str;  string str1; 
   
   long search_handle=FileFindFirst("*",file_name);
   if(search_handle!=INVALID_HANDLE)
     {
      do
        {
         FileIsExist(int_dir+file_name);
      handle=FileOpen(file_name , FILE_CSV|FILE_READ);  
      if(handle>0)
      {
       str=FileReadString(handle); 
       str1=FileReadString(handle);     
       printf("handle:" +handle + ";  str:"+str + ";  str1:" + str1);
      }
         i++;
        }
      while(FileFindNext(search_handle,file_name));
          {
          FileFindClose(search_handle);
          }
     }            
}