Read from the datafile while data acquisition

I have a program to process and record the data while experimenting. The data file is attached here with (please have a look). It is recorded injection by injection with injection number. Is it possible to read the data file while acquisition and display the injection number (only the injection number)? I mean, the counter should count the number of injection while experiment from the datafile.
Attachments:
Test2.txt ‏59 KB

If you are writing to the file, it is really a bad idea to try to read from it at the same time. Weird things can happen.
Instead, you should keep a counter in your code. Shift Registers work extremely well for that.
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Read from the datafile while data acquisition

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