I just recently switched to MT5. I did not have any issue issue reading or writing to files in MT4. I put the file in MetaQuotes\Terminal\<terminal id>\tester\files and it would work no problem.
For MT5, I tried to put my file in C:\Users\user\AppData\Roaming\MetaQuotes\Terminal\Common\Files and also in C:\Users\user\AppData\Roaming\MetaQuotes\Terminal\<terminal id>\MQL5\Files\ and still nothing seems to work. I need some help. My EA needs a helper file to work properly.
Please share a code snippet where you read/write the file.
I just recently switched to MT5. I did not have any issue issue reading or writing to files in MT4. I put the file in MetaQuotes\Terminal\<terminal id>\tester\files and it would work no problem.
For MT5, I tried to put my file in C:\Users\user\AppData\Roaming\MetaQuotes\Terminal\Common\Files and also in C:\Users\user\AppData\Roaming\MetaQuotes\Terminal\<terminal id>\MQL5\Files\ and still nothing seems to work. I need some help. My EA needs a helper file to work properly.
does not work is meaningless, what is the problem? what error code/message do you get? show your source code
does not work is meaningless, what is the problem? what error code/message do you get? show your source code
MT5 Test-Agents (Testers) have their own folder structure.
You might want to read about " tester_file" here:
https://www.mql5.com/en/docs/basis/preprosessor/compilation
![Documentation on MQL5: Language Basics / Preprocessor / Program Properties (#property) Documentation on MQL5: Language Basics / Preprocessor / Program Properties (#property)](https://c.mql5.com/36/84/documentation-on-mql5-language__3.png)
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There is a debug print statement that's always get printed if the file cannot be be opened. The error message shows up every time I run the EA and the contents of the file are not there. The exact same code worked in MT4. I also tried to debug myabe I put the file in a wrong directory by writing to a debug.txt and search for it and I couldn't find it anywhere.
string str; string write_file_name="debug.txt"; string read_file_name; string path = "C:\\Users\\<user>\\AppData\\Roaming\\MetaQuotes\\Terminal\\<terminal id>\\MQL5\\Files\\"; int read_file_handle; int write_file_handle; int string_length; read_file_name = path + FILE_NAME + ".txt"; if(c::test_write_file) { write_file_name = path + write_file_name; write_file_handle=FileOpen(write_file_name, FILE_WRITE); FileWriteString(write_file_handle, "testing"); FileClose(write_file_handle); Print("test write file to " + write_file_name); } current_time = TimeCurrent(); current_time = current_time + (60 * 60 * c::TIME_OFFSET); day_of_week = TimeDayOfWeek(current_time); if((current_time > last_file_read_time && Minute() > 31) || last_file_read_time == 0 || disable_reread_file) { read_file_handle=FileOpen(read_file_name, FILE_READ); if(read_file_handle!=INVALID_HANDLE) { current_header=FileReadString(read_file_handle); Print("reading from " + read_file_name + " with header " + current_header); while(!FileIsEnding(read_file_handle)) { str=FileReadString(read_file_handle); } } else { Print(read_file_name + " not found"); file_read_error = true; } FileClose(read_file_handle); } return;
string path = "C:\\Users\\<user>\\AppData\\Roaming\\MetaQuotes\\Terminal\\<terminal id>\\MQL5\\Files\\"; read_file_name = path + FILE_NAME + ".txt";
File Write Problem (Error: 5002) - Expert Advisors and Automated Trading - MQL5 programming forum #1-2 (2020)
and FolderDelete using TERMINAL_DATA_PATH - General - MQL5 programming forum (2017)
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I just recently switched to MT5. I did not have any issue issue reading or writing to files in MT4. I put the file in MetaQuotes\Terminal\<terminal id>\tester\files and it would work no problem.
For MT5, I tried to put my file in C:\Users\user\AppData\Roaming\MetaQuotes\Terminal\Common\Files and also in C:\Users\user\AppData\Roaming\MetaQuotes\Terminal\<terminal id>\MQL5\Files\ and still nothing seems to work. I need some help. My EA needs a helper file to work properly.