how to readline per timer tick not loop c#

Question

0.00/5 (No votes)

See more:

how to read text file line by line that every timer tick without loop

first line
second line
and the othere line
etc......

C#

int counter = 0;
string line;

// Read the file and display it line by line.
System.IO.StreamReader file =
   new System.IO.StreamReader("c:\\test.txt");
/* i need to read line using timer instead of loop(while)*/
while((line = file.ReadLine()) != null)
{
   Console.WriteLine (line);

}

file.Close();

Posted 3-Apr-15 6:29am

TheSniper105

Add a Solution

2 solutions

Solution 1

1) Create a timer[^] and assign an eventhandler-method to its Elapsed-event (see link).
2) Have the code for opening and closing the file outside of that eventhandler-method. The StreamReader-object should be accessible to the eventhandler-method though (in its scope).
3) In the eventhandler-method do the .ReadLine()

Posted 3-Apr-15 6:47am

Sascha Lefèvre

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Abhinav S · Accepted Answer · 2015-04-03T06:53:00

Solution 2

Something like this could work

int counter = 0;
public static void main()
{
    System.Windows.Forms.Timer myTimer = new System.Windows.Forms.Timer();    
    myTimer.Tick += new EventHandler(ReadFile);   
    myTimer.Interval = 120000;
    myTimer.Start();
}
public void ReadFile()
{
    System.IO.StreamReader file =
       new System.IO.StreamReader("c:\\test.txt");
    /* i need to read line using timer instead of loop(while)*/
    string line = File.ReadLines(FileName).Skip(counter).Take(1).First();
    Console.WriteLine (line);
    counter++;
    file.Close();
}

Posted 3-Apr-15 6:53am

Abhinav S

Updated 3-Apr-15 7:34am

v3

Comments

TheSniper105 3-Apr-15 13:01pm

this will read the entire file every 120000
but i need only to read one line at 120000 milliseconds
then read next line after 120000 milliseconds
how to make that??

Abhinav S 3-Apr-15 13:21pm

Updated my answer so that file is one line at every tick.

TheSniper105 3-Apr-15 13:27pm

always read the first line how to move to next line

Abhinav S 3-Apr-15 13:34pm

Use a counter with Skip (LINQ).

TheSniper105 3-Apr-15 14:05pm

what is (FileName) and what is the use of
System.IO.StreamReader file =
new System.IO.StreamReader("c:\\test.txt");
why you use ReadLines???