System.Collections.IList.Insert Method

Inserts an item to the IList at the specified index.

Syntax

public void Insert (int index, object value)

Parameters

index
The zero-based index at which value should be inserted.
value
The object to insert into the IList.

Exceptions

TypeReason
ArgumentOutOfRangeException index is not a valid index in the current instance (i.e. is greater than the number of elements in the current instance).
NotSupportedExceptionThe current instance is read-only or has a fixed size.

Remarks

If index equals the number of items in the IList, then value is appended to the end.

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.

Requirements

Namespace: System.Collections
Assembly: mscorlib (in mscorlib.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0, 4.0.0.0