List(T) Constructor (IEnumerable(T))
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List<T> Constructor (IEnumerable<T>)


Initializes a new instance of the List<T> class that contains elements copied from the specified collection and has sufficient capacity to accommodate the number of elements copied.

Namespace:   System.Collections.Generic
Assembly:  mscorlib (in mscorlib.dll)

public List(
	IEnumerable<T> collection


Type: System.Collections.Generic.IEnumerable<T>

The collection whose elements are copied to the new list.

Exception Condition

collection is null.

The elements are copied onto the List<T> in the same order they are read by the enumerator of the collection.

This constructor is an O(n) operation, where n is the number of elements in collection.

The following example demonstrates the List<T> constructor and various methods of the List<T> class that act on ranges. An array of strings is created and passed to the constructor, populating the list with the elements of the array. The Capacity property is then displayed, to show that the initial capacity is exactly what is required to hold the input elements.

private void ovalShape1_Click(System.Object sender, System.EventArgs e)
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Universal Windows Platform
Available since 4.5
.NET Framework
Available since 2.0
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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