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IList.Add Method

StringCollection.IList.Add Method

Adds an object to the end of the StringCollection.

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

Private Function Add ( _
	value As Object _
) As Integer Implements IList.Add


Type: System.Object

The Object to be added to the end of the StringCollection. The value can be Nothing.

Return Value

Type: System.Int32
The StringCollection index at which the value has been added.




The StringCollection is read-only.


The StringCollection has a fixed size.

StringCollection accepts Nothing as a valid value and allows duplicate elements.

If Count already equals the capacity, the capacity of the StringCollection is increased by automatically reallocating the internal array, and the existing elements are copied to the new array before the new element is added.

If Count is less than the capacity, this method is an O(1) operation. If the capacity needs to be increased to accommodate the new element, this method becomes an O(n) operation, where n is Count.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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