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POc# lambda expression - add delegate results to generic list
 

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    <p><strong>Question:</strong> I have just wrote my first code using c# lambda expressions. It works, but I am not sure if this is the best way to do it. Any recommendations on a better way to do the lambda expression? It seems odd to have numerous lines of code in the expression like I do below.</p> <p><strong>Background:</strong> I have a generic list of delegates. Each delegate function returns an enum value indicating what happened in the function. Upon evaluation of the delegate, I need to add the enum to a List if it was not a specific enum value.</p> <p><strong>Disclaimer:</strong> Code here is very generic, the real code actually does stuff in the delegates to determine the return value!</p> <hr> <pre><code>class Class1 { public enum WhatHappened { ThingA, ThingB, Nothing } private delegate WhatHappened del(); public static List&lt;WhatHappened&gt; DoStuff() { List&lt;del&gt; CheckValues = new List&lt;del&gt;(); List&lt;WhatHappened&gt; returnValue = new List&lt;WhatHappened&gt; { }; CheckValues.Add(delegate { return method1(); }); CheckValues.Add(delegate { return method2(); }); CheckValues.ForEach(x =&gt; { WhatHappened wh = x(); if (wh != WhatHappened.Nothing) returnValue.Add(wh); }); return returnValue; } private static WhatHappened method1() { return WhatHappened.Nothing; } private static WhatHappened method2() { return WhatHappened.ThingA; } } </code></pre> <p><strong>Note:</strong> I originally had the lambda like adding all the items (see below), then removing the ones I didn't want (WhatHappened.Nothing).</p> <pre><code>CheckValues.ForEach(x =&gt; returnValue.Add(x())); </code></pre>
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