intel96

Jul 07, 2007 at 11:39 AM

To All,

I decided to add some comment lines to a CSV file, just in case someone opens the file manually. Once I added the comment lines I started getting XML processing errors, because of the new format. I have spent hours trying to fix this problem using StartsWith, but I am still having errors.

Here is the problem that I am trying to fix:
1. Process CSV file
2. The CSV file has four lines that start with #
3. Loop through the CSV file until a line without a # occurs
4. Start processing the rest of the file

Question:
What is the best method to accomplish this task?

Here is the code that I have tried, which is not working.

Code:
// Loop through the file until the line no longer start with a #
while (serverLogRead.ReadLine().StartsWith("#") == true)
{
Application.DoEvents();
}

// This starts reading the entire file again. How do I start reading
// the after the last #?
string contents = serverLogRead.ReadLine();

Process the rest of the file until the end is reached.
while (contents != null)
{
// do the xml work here
}

Thanks for any help in fixing this issue.
Intel96
Rossj

Jul 07, 2007 at 12:20 PM

How about ...

string line = string.Empty;
while ( (line = serverLogRead.ReadLine()) != null )
{
    // ignore empty lines or comments
    if ( line.Length == 0 || line[0] == '#' ) continue;

    // Do whatever with the current line

    // Do this if you think you need it.
Application.DoEvents();
}
mot256 Beyond ASM... OOP

Jul 07, 2007 at 12:51 PM

Yes, I think this would work...

But the Application.DoEvents(); will just cause problems... Assuming this algorithm is called from a button-click, it (DoEvents) will enable the user to click the button a second time, thus entering the same method while the previous instance is still running…
AndyC

Jul 07, 2007 at 1:16 PM

You could wrap the call in a conditional test that prevents multiple entrances or just spin it off into a background thread.
intel96

Jul 10, 2007 at 7:49 PM

Thanks Rossj,

Your code worked great and fixed the bug that I introduced with the comment lines.

Thanks,
Intel96

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How do you use StartsWith correctly?

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