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IList<T>.Insert(Int32, T) Method

Definition

Inserts an item to the IList<T> at the specified index.

public:
 void Insert(int index, T item);
public void Insert (int index, T item);
abstract member Insert : int * 'T -> unit
Public Sub Insert (index As Integer, item As T)

Parameters

index
Int32

The zero-based index at which item should be inserted.

item
T

The object to insert into the IList<T>.

Exceptions

index is not a valid index in the IList<T>.

The IList<T> is read-only.

Remarks

If index equals the number of items in the IList<T>, then item is appended to the list.

In collections of contiguous elements, such as lists, the elements that follow the insertion point move down to accommodate the new element. If the collection is indexed, the indexes of the elements that are moved are also updated. This behavior does not apply to collections where elements are conceptually grouped into buckets, such as a hash table.

Applies to

See also