List(Of T).RemoveAll Method

Removes all the elements that match the conditions defined by the specified predicate.

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

'Declaration
Public Function RemoveAll ( _
	match As Predicate(Of T) _
) As Integer

Parameters

match
Type: System.Predicate(Of T)
The Predicate(Of T) delegate that defines the conditions of the elements to remove.

Return Value

Type: System.Int32
The number of elements removed from the List(Of T) .

ExceptionCondition
ArgumentNullException

match is Nothing.

The Predicate(Of T) is a delegate to a method that returns true if the object passed to it matches the conditions defined in the delegate. The elements of the current List(Of T) are individually passed to the Predicate(Of T) delegate, and the elements that match the conditions are removed from the List(Of T).

This method performs a linear search; therefore, this method is an O(n) operation, where n is Count.

Silverlight

Supported in: 5

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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