How to read text from a file and populating a message?

[kieth]

Does anybody know how to read from a text file and if it contains a certain word or phrase (for example - error) to then flag up the error?
if possible...quot ing the whole line of text the "Error" is on?

[Frinavale]

Well first you need to read the file into memory.
Then I would probably use Regular Expressions to find any line that contains the word that you're searching for. If that word exists then just use the MessageBox (assuming this is a desktop application and not a web application) to display your message.

What part are you stuck on?

[kieth]

thank you for the reply,

this is what i have, but at the minute... i dont know what it's doing because the cmd box opens and closes instantly not allowing me to see any results

  {
            FileStream fout;

            System.IO.FileInfo f = new System.IO.FileInfo("C:\\Documents and Settings\\kwareham01\\Desktop\\test log.txt");
            // System.IO.FileStream s = f.Open(System.IO.FileMode.Open, System.IO.FileAccess.Read);
            //  Console.WriteLine("Entry does not exist in database");
            StreamReader s = f.OpenText();
            string read = null;
            while ((read = s.ReadLine()) != null)

                if (read.Contains("Entry does not exist in database"))
                {
           
                    // open output file 
                    try
                    {
                        fout = new FileStream("test.txt", FileMode.Create);
                    }
                    catch (IOException exc)
                    {
                        Console.WriteLine(exc.Message + "\nError Opening Output File");
                        return;
                    }

[Frinavale]

Well maybe that's because it looks like you're writing a Console application?
What kind of application are you developing?

[kieth]

sorry if it's unclear, i'm still very new to programming...

I am trying to develop a console app, that will run through error logs, if it finds an error it flags it up...

to save the manual process of reading through lots of logs.

i may well just be misguided in my approach, in which case it will be back to the books...

just thought i'd pop it on here on the off chance

thanks

[Frinavale]

Hehe sorry that's my fault...for some weird reason I thought you were trying to mix the two types of applications together (it doesn't work well).

In order to see what's happen add a Console.ReadLin e() to the end of your main method....this will cause the console application to wait for the user to hit "enter" before closing :)

-Frinny

[kieth]

sorted, thank you