vb.net - read the last line of multi-line string separated by line feeds -

i have variable held in memory string several lines. name of variable 'trace2'

i.e.

dim trace2 string 

instead of reading every line want read last line.

all can find examples of reading text file, not variable held in memory

tia

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added

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i tried this, dont because dont want create file

      dim filenameandpath string = "0trace2.txt"          dim filecontent string         dim filelines() string          using sr new system.io.streamreader(filenameandpath)              filecontent = sr.readtoend             filelines = filecontent.split(system.environment.newline.tochararray)             if filelines.count >= 2                  linenumber integer = filelines.getupperbound(0) - 1 filelines.getupperbound(0)                      msgbox(filelines)                 next              end if              sr.close()         end using 

why not file.readlines , enumerable.last?

dim lastline string = file.readlines(filenameandpath).lastordefault() ' nothing if file empty 

file.readlines not need read lines before can start processsing, it's cheap in terms of memory consumption.

if have string:

dim lastline = trace2.split({environment.newline}, stringsplitoptions.none).lastordefault()