vb.net - How to find a character and replace the entire line in a text file -

how go text file find character replace entire line character on?

here's example of text file:

    line1     example line2     others     ......     ....     id: "randomstr"     more lines     ... 

i need find line "id" , replace it. edited text file should be:

    line1     example line2     others     ......     ....     "the correct line"     more lines     ... 

first need read each line of text file, this:

for each line string in system.io.file.readalllines("pathtoyourtextfile.txt")  next 

next, need search string want match; if found, replace replacement value, this:

dim outputlines new list(of string)() dim stringtomatch string = "valuetomatch" dim replacementstring string = "replacementvalue"  each line string in system.io.file.readalllines("pathtoyourtextfile.txt")     dim matchfound boolean     matchfound = line.contains(stringtomatch)      if matchfound         ' replace line string         outputlines.add(replacementstring)     else         outputlines.add(line)     end if next 

finally, write data file, this:

system.io.file.writealllines("pathtoyouroutputfile.txt", outputlines.toarray(), encoding.utf8)