IList.Insert Method (Int32, Object)

 

Inserts an item to the IList at the specified index.

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

abstract Insert : 
        index:int *
        value:Object -> unit

Parameters

index
Type: System.Int32

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

value
Type: System.Object

The object to insert into the IList.

Exception Condition
ArgumentOutOfRangeException

index is not a valid index in the IList.

NotSupportedException

The IList is read-only.

-or-

The IList has a fixed size.

NullReferenceException

value is null reference in the IList.

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.

The following example demonstrates the implementation of the IList interface to create a simple list, fixed-size list. This code is part of a larger example for the IList interface.

No code example is currently available or this language may not be supported.

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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