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 8
.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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