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    <p>If you're using C# 3.0, your intentions may be better expressed with extension methods and IFormatProviders. In code, this could be an extension method on the FileInfo and DirectoryInfo ToString methods, so they would read something like this:</p> <pre><code>var directorySize = myDirectory.ToString("GB"); var fileSize = myFile.ToString("MB"); </code></pre> <p>The above code feels more natural for what you are trying to do.</p> <p>See how the following works for you. Some of it will need to be tested (the recursive method DirectoryInfoExtender.GetDirectorySize comes to mind). If you need to be able to write statements like <code>Console.WriteLine("{0:GB}", fileInfo)</code>, you might also consider writing an IFormatProvider as well.</p> <p>Also note that I have intentionally skimped on null checks and exception handling for these publically accessible methods.</p> <pre><code>public static class DirectoryInfoExtender { public static string ToString(this DirectoryInfo d, string format, int fractionalDigits) { double fileSize = GetDirectorySize(d); return FileSizeConverter.GetFileSizeString(fileSize, format, fractionalDigits); } public static double GetDirectorySize(DirectoryInfo d) { var files = d.GetFiles(); var directories = d.GetDirectories(); if(files.Length == 0 &amp;&amp; directories.Length == 0) { return 0; } else { double size = 0; foreach(var file in files) { size += file.Length; } foreach(var directory in directories) { size += GetDirectorySize(directory); } } return size; } } public static class FileInfoExtender { public static string ToString(this FileInfo f, string format, int fractionalDigits) { return FileSizeConverter.GetFileSizeString(f.Length, format, fractionalDigits); } } public class FileSizeConverter { public static string GetFileSizeString(double fileSize, string format, int fractionalDigits) { long divisor; string sizeIndicator; switch(format.ToLower().Trim()) { case "gb": divisor = (long)Math.Pow(2, 30); sizeIndicator = "gigabytes"; break; case "mb": divisor = (long) Math.Pow(2, 20); sizeIndicator = "megabytes"; break; case "kb": divisor = (long)Math.Pow(2, 10); sizeIndicator = "kilobytes"; break; default: divisor = 1; sizeIndicator = "bytes"; break; } return String.Format("{0:N" + fractionalDigits +"} {1}", fileSize / divisor, sizeIndicator); } } </code></pre>
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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