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    <p>What you want is Dave DeLong's <a href="https://github.com/davedelong/CHCSVParser" rel="nofollow">CHCSVParser</a> (which also supports writing to CSV)</p> <p>To give a proper answer you need to provide more information though.</p> <p>First of all the string you provided actually is no valid CSV. It does not use commas (the "C" in CSV) to delimiter row fields. And it is trailed by a semicolon, while CSV would expect a line feed.</p> <p>So to get proper CSV file output you'd do:</p> <pre><code>#import "CHCSVWriter.h" //... NSArray *fields = [NSArray arrayWithObjects:@"firststring", @"secondstring", @"thirdstring", @"fourthstring", @"fifthstring", nil]; CHCSVWriter *writer = [[CHCSVWriter alloc] initWithCSVFile:filePath atomic:YES]; [writer writeLineWithFields:fields]; [writer closeFile]; </code></pre> <p>Which would result in a proper CSV à la:</p> <pre><code>"firststring", "secondstring", "thirdstring", "fourthstring", "fifthstring" </code></pre> <p>or:</p> <pre><code>firststring,secondstring,thirdstring,fourthstring,fifthstring </code></pre> <p>depending on configuration.</p> <hr> <p>To get output matching your sample, however:</p> <pre><code>NSArray *fields = [NSArray arrayWithObjects:@"firststring", @"secondstring", @"thirdstring", @"fourthstring", @"fifthstring", nil]; NSString *outputString = [[[fields componentsJoinedByString:@"#"] appendString:@";\n"]]; [outputString writeToFile:filePath atomically:YES encoding:NSUTF8StringEncoding error:nil]; </code></pre> <p>The latter is very error prone however. As soon as one of those strings contains "#", ";" or "\n".</p> <p>Also my snippets use hard-coded strings. You however would need to create IBOutlets for each text field and ask those text fields for their string values.</p> <p>Example:</p> <pre><code>NSString *myString = myUITextField.text; </code></pre> <p>on OSX (&lt;=10.6) you'd use:</p> <pre><code>NSString *myString = [myNSTextField stringValue]; </code></pre>
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    1. POobjective C: write in a csv (txt) string contained in some textfield
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    1. CO+1 I approve of this answer.
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