Quote:
log file data in xlsx format
are you sure ? is it actually a text type file with a csv extension instead that you can read into Excel easily ?
If you're very new to c#, why not settle for a 'simpler' method than Interop & Excel ?
a) read the (text) file into a string array, using File.ReadAllLines(, or, if it grows too big, read it line by line
b) For each line (not including the header) use String.Split() with tab or comma (could be tab in your example), to split the string into 'fields'
c) Then think about your dictionary and keys and such