dart : how to get text till second underscore?

This is my key

pi_1DsTls2eZvKYlo2C3N1yynSw_secret_bTWD4Vz6X384KpcdeZV6uqlhy

from this key i eant to take only this with hard code

pi_1DsTls2eZvKYlo2C3N1yynSw

please help me, thank you

>Solution :

here a function you can use

    String getBeforeSecondUnderScore(String value) {
     return value.substring(
       0,
       value.indexOf(
         "_",
         value.indexOf("_") + 1,
       ),
     );
   }

in dart laungage since I found it with flutter tag filter