Solved

delete a string of data in a file

Posted on 1998-01-21
1
122 Views
Last Modified: 2010-05-18
How do you delete a string of data if you know what the string should contain?. ex. I want to delete the line lastdrive=w from my autoexec.bat.
I use Delphi 3.
0
Comment
Question by:hh
1 Comment
 
LVL 5

Accepted Solution

by:
inter earned 50 total points
ID: 1357260
Use the following funcion

// call example : RemoveFromFile('c:\Autoexec.bat','lastdrive=w')
// this procedure deletes every occurring line of Substr
// so be carefull and modify the program accordingly

function RemoveFromFile(FileName, SubStr : string):boolean;
var
  S : TStringlist;
  i : integer;
begin
  S := TStringList.Create;
  try
    S.LoadFromFile(FileName); // load file
    for i:= S.Count-1 downto 0 do
      if Pos(UpperCase(SubStr), UpperCase(S[i])) then
        S.Delete(i);
    S.SaveToFile(FileName); // override file
  finally
    S.Free;
  end;
end;

May it works,
Igor
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Creating an auto free TStringList The TStringList is a basic and frequently used object in Delphi. On many occasions, you may want to create a temporary list, process some items in the list and be done with the list. In such cases, you have to…
In my programming career I have only very rarely run into situations where operator overloading would be of any use in my work.  Normally those situations involved math with either overly large numbers (hundreds of thousands of digits or accuracy re…
Here's a very brief overview of the methods PRTG Network Monitor (https://www.paessler.com/prtg) offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…
This video shows how to remove a single email address from the Outlook 2010 Auto Suggestion memory. NOTE: For Outlook 2016 and 2013 perform the exact same steps. Open a new email: Click the New email button in Outlook. Start typing the address: …

932 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

15 Experts available now in Live!

Get 1:1 Help Now