how to pass list as parameter in function

Question

I have taken a list and insert some value in it  public List lt DateTime gt  dates   new List lt DateTime gt              DateTime dt1   DateTime Parse 12 1 2012   DateTime dt2   DateTime Parse 12 6 2012   if  dt1  lt   dt2                                      for  DateTime dt   dt1  dt  lt   dt2  dt   dt AddDays 1                 dates Add dt                                        Now I want pass this List i e dates as a parameter to some function like-  somefunction dates     How exactly can i achieve this

User · Answer

You should always avoid using List lt T gt  as a parameter  Not only because this pattern reduces the opportunities of the caller to store the data in a different kind of collection  but also the caller has to convert the data into a List first   Converting an IEnumerable into a List costs O n  complexity which is absolutely unneccessary  And it also creates a new object   TL DR you should always use a proper interface like IEnumerable or IQueryable based on what do you want to do with your collection      In your case   public void foo IEnumerable lt DateTime gt  dateTimes

User · Answer

You can pass it as a List lt DateTime gt   public void somefunction List lt DateTime gt  dates        However  it s better to use the most generic  as in general  base  interface possible  so I would use  public void somefunction IEnumerable lt DateTime gt  dates        or  public void somefunction ICollection lt DateTime gt  dates        You might also want to call  AsReadOnly   before passing the list to the method if you don t want the method to modify the list - add or remove elements

User · Answer

You need to do it like this   void Yourfunction List lt DateTime gt  dates

User · Answer

I need this for Unity in C  so I thought that it might be useful for some one  This is an example of passing a list of AudioSources to whatever function you want   private void ChooseClip GameObject audioSourceGameObject   List lt AudioClip gt  sources        audioSourceGameObject GetComponent lt AudioSource gt     clip   sources  0

User · Answer

public void SomeMethod List lt DateTime gt  dates           do something

[c#] how to pass list as parameter in function

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