c# - Is returning List<T> from method differ in performance from returning Collection<T>? -

March 15, 2011

We have a web project that includes some business methods called " Return to list from a list of .dll & lt;> ...
I do not remember now - it was reported that the returning collection & lt;> is better than returning the list & lt;>
Is this valid?
Note that I do not process the values returned from the BLL methods. See it in a web page

IList & lt; T & gt; , the IIRC, the implementation of which is the basic implementation

the collection & lt; T & Code> From the list . Therefore list in archive list & lt; T & gt; is at least one other abstraction, but in general it is a In fact, you may want to consider returning IList . Edit: Here the collection Manufacturer, Courtesy of Reflection:

  Public Collection () {this.items = New list

So in reality, it wraps one layer of intangible. plus on its side is that you collection > (which is the list While not possible & lt; T & gt; via direct or sub-clinging, because there are no interesting virtual methods in it).

  The other thing is that they have the same  aggregate  display in the context of "o" (you believe you have default  list & lt; T & gt; < / Code> use the implementation) indexer lookup will be  o (1) , etc.


















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