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POMatch only a newline character
 

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  1. POMatch only a newline character
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    <p>I have a text file which has lines of data separated by newlines. What I'm trying to do is count the number of lines in the file, excluding the ones that are only a newline. </p> <p>I'm trying to use a regular expression to look at each line as it is read, and if it starts with a newline character not include it in my line count, but I can't seem to get it to work. I've searched all over the place for how to do this with no results.</p> <p>Here's the method I've written to try to do this:</p> <pre><code>public int LineCounter() { StreamReader myRead = new StreamReader(@"C:\TestFiles\test.txt"); int lineCount = 0; string line; while ((line = myRead.ReadLine()) != null) { string regexExpression = @"^\r?\n"; RegexOptions myOptions = RegexOptions.Multiline; Match stringMatch = Regex.Match(line, regexExpression, myOptions); if (stringMatch.Success) { } else { lineCount++; } } return lineCount; } </code></pre> <p>I've tried changing the RegexOptions between <code>Singleline</code> and<code>Multiline</code>, I've tried putting <code>"\r|\n|\r\n"</code> into my pattern match, and I've tried removing the <code>^</code> from the expression, but I can't seem to get it to work. No matter what I do, my <code>lineCount</code> always ends up being the total number of lines in the file, including the newlines.</p> <p>I'm apparently overlooking something obvious, but I'm not yet familiar enough with the C# language to see what's wrong. Everything looks like it should work to me. Can someone please help me out?</p>
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    1. USgunr2171
    1. USCurtisFreak
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      1. POMatch only a newline character
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      1. VTUpMod
    2. VO
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    1. COTry `@"^$\r?\n?"`
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      1. USIt'sNotALie.
    2. COI decided to go with another approach @newStackExchangeInstance, but this fixed my regex. Thank you :)
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      1. USCurtisFreak
 

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