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    <p>Since you have several pre-defined pieces of information that you want associated with each value instance, I would start by defining a structure to hold the information required for each file:</p> <pre><code>public struct CustomFileInfo //pick a name that avoids conflicts with System.IO { public readonly int FileId; public readonly string FileName; public readonly string Path; // constructor public CustomFileInfo(int fileId, string fileName, string path) { this.FileId = fileId; this.FileName = fileName; this.Path = path; } } </code></pre> <p>And then I would use a generic collection (such as a <a href="http://msdn.microsoft.com/en-us/library/6sh2ey19.aspx" rel="nofollow noreferrer"><code>List&lt;T&gt;</code></a>) to hold instances of that structure:</p> <pre><code>List&lt;FileInfo&gt; myFiles = new List&lt;FileInfo&gt;(); </code></pre> <p>Alternatively, you could use a <a href="http://msdn.microsoft.com/en-us/library/xfhwa508.aspx" rel="nofollow noreferrer"><code>Dictionary&lt;TKey, TValue&gt;</code></a>, with the <code>FileId</code> as the key and the <code>FileInfo</code> structure as the value. For example:</p> <pre><code>Dictionary&lt;int, FileInfo&gt; myFiles = new Dictionary&lt;int, FileInfo&gt;(); </code></pre> <p>The advantage of a dictionary is that it provides faster lookup time when searching for a file by its ID. This is because a dictionary is implemented internally using a hash table.</p> <p><strong>EDIT:</strong> Note that <a href="https://stackoverflow.com/questions/441309/why-are-mutable-structs-evil">mutable structs are evil</a>. If you need to be able to change the individual pieces of information that describe a file (and I can't imagine why you would), you should declare <code>CustomFileInfo</code> as a <code>class</code> instead of a <code>struct</code>.</p>
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    1. POStore values to collection, suggestion please
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    1. USCody Gray
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    1. CO`Dictionary` is a better solution for searching than `List`.
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      1. USacoolaum
    2. CO@acoo: Indeed, if you were planning on doing a lot of searching. As best I can tell from the question, the asker only wants a way to store a collection of this information.
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      1. USCody Gray
    3. CO+1 for suggesting a struct, the data structure described by the op is a good candidate
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      1. USMattDavey
 

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