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Enumerable.ToList<'TSource> Method (IEnumerable<'TSource>)


Creates a List<'T> from an IEnumerable<'T>.

Namespace:   System.Linq
Assembly:  System.Core (in System.Core.dll)

static member ToList<'TSource> : 
        source:IEnumerable<'TSource> -> List<'TSource>


Type: System.Collections.Generic.IEnumerable<'TSource>

The IEnumerable<'T> to create a List<'T> from.

Return Value

Type: System.Collections.Generic.List<'TSource>

A List<'T> that contains elements from the input sequence.

Type Parameters


The type of the elements of source.

Exception Condition

source is null.

The ToList<'TSource>(IEnumerable<'TSource>) method forces immediate query evaluation and returns a List<'T> that contains the query results. You can append this method to your query in order to obtain a cached copy of the query results.

ToArray<'TSource> has similar behavior but returns an array instead of a List<'T>.

The following code example demonstrates how to use ToList<'TSource> to force immediate query evaluation and return a List<'T> that contains the query results.

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

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 3.5
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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