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How to convert an ArrayList to a strongly typed generic list without using a foreach?


See the code sample below. I need the ArrayList to be a generic List. I don't want to use foreach.

ArrayList arrayList = GetArrayListOfInts();  
List<int> intList = new List<int>();  

//Can this foreach be condensed into one line?  
foreach (int number in arrayList)  
{  
    intList.Add(number);  
}  
return intList;    

Solution

  • Try the following

    var list = arrayList.Cast<int>().ToList();
    

    This will only work though using the C# 3.5 compiler because it takes advantage of certain extension methods defined in the 3.5 framework.