My question is how to get index of row in JArray example if data is so big and
the excel file is update every so I need to get lastname value by searching from column name = “jimmy”
Explanation for anyone who confusing with my goals.
After I get the Index of row then I will use that index for something like this for access to value that I want to use for the program.
inside (1) should be become to a variable instead of now is static index of row