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    <p>This meets your requirements as stated, and uses LINQ (since your question was tagged LINQ), but is not necessarily <em>best</em>:</p> <pre><code>class Program { static void Main(string[] args) { List&lt;string&gt; inputs = new List&lt;string&gt; { "FirstName,LastName,Title,BirthDate,HireDate,City,Region", "Nancy,Davolio,Sales Representative,1948-12-08,1992-05-01,Seattle,WA", "Andrew,Fuller,Vice President Sales,1952-02-19,1992-08-14,Tacoma,WA", "Janet,Leverling,Sales Representative,1963-08-30,1992-04-01,Kirkland,WA", "Margaret,Peacock,Sales Representative,1937-09-19,1993-05-03,Redmond,WA", "Steven,Buchanan,Sales Manager,1955-03-04,1993-10-17,London,NULL", "Michael,Suyama,Sales Representative,1963-07-02,1993-10-17,London,NULL", "Robert,King,Sales Representative,1960-05-29,1994-01-02,London,NULL", "Laura,Callahan,Inside Sales Coordinator,1958-01-09,1994-03-05,Seattle,WA", "Anne,Dodsworth,Sales Representative,1966-01-27,1994-11-15,London,NULL" }; // TODO: These widths would presumably be configurable List&lt;int&gt; widths = new List&lt;int&gt; { 12, 22, 32, 13, 12, 17, 8 }; List&lt;string&gt; outputs = inputs.Select(s =&gt; ToFixedWidths(s, ',', widths)).ToList(); outputs.ForEach(s =&gt; System.Diagnostics.Debug.WriteLine(s)); Console.ReadLine(); } private static string ToFixedWidths(string s, char separator, List&lt;int&gt; widths) { List&lt;string&gt; split = s.Split(separator).ToList(); // TODO: Error handling - what if there are more/less separators in // string s than we have width values? return string.Join(String.Empty, split.Select((ss, i) =&gt; ss.PadRight(widths[i], ' ')).ToArray()); } } </code></pre> <p>In a production scenario though I'd expect to see this data read into an appropriate <code>Person</code> class, as Matt recommended in his answer.</p>
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    1. COWhy don't you use `ss.PadRight(widths[i], ' ')` in your `ToFixedWidths` function?
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