What Are Some Useful C# Extension Methods and How Do They Improve Code?

Select C#extension method collection

For the popular discussion post on Codeplex, "What are your favorite C#expansion methods?" We have compiled a series of excellent expansion methods, which can significantly enhance the function of the C#language.

One of the striking methods is

expansion methods, define as follows:

In

This expansion method elegantly optimizes whether the check value is included in the code in the scheduled list. Examples as follows:

<code class="language-csharp">public static bool In<T>(this T source, params T[] list)
{
  if(source == null) throw new ArgumentNullException("source");
  return list.Contains(source);
}</code>

Methods simplify the readability and maintenance of the code by eliminating the lengthy conditional sentences (for comparative values). It is especially useful to check multiple values ​​for predefined collection.

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