public static Task<TResult> Select<TSource, TResult>(
	this Task<TSource> task,
	Func<Task<TSource>, TResult> continuationFunction,
	bool supportsErrors
)

<ExtensionAttribute>
Public Shared Function Select(Of TSource, TResult) ( 
	task As Task(Of TSource),
	continuationFunction As Func(Of Task(Of TSource), TResult),
	supportsErrors As Boolean
) As Task(Of TResult)

public:
[ExtensionAttribute]
generic<typename TSource, typename TResult>
static Task<TResult>^ Select(
	Task<TSource>^ task, 
	Func<Task<TSource>^, TResult>^ continuationFunction, 
	bool supportsErrors
)

[<ExtensionAttribute>]
static member Select : 
        task : Task<'TSource> * 
        continuationFunction : Func<Task<'TSource>, 'TResult> * 
        supportsErrors : bool -> Task<'TResult> 

Parameters

task

Type: System.Threading.TasksTaskTSource
The antecedent task.

continuationFunction

Type: SystemFuncTaskTSource, TResult
The continuation function to execute when task completes.

supportsErrors

Type: SystemBoolean
if the continuationFunction properly handles a faulted antecedent task; otherwise, .

Type Parameters

TSource

The type of the result produced by the antecedent TaskTResult.

TResult

The type of the result produced by the continuation TaskTResult.

Return Value

Usage Note

try
{
    TSource source = await task.ConfigureAwait(false);
}
catch
{
    if (!supportsErrors)
        throw;
}

return continuationFunction(task);

If the antecedent task is canceled, or faulted with supportsErrors set to , the status of the antecedent is directly applied to the task returned by this method; it is not wrapped in an additional AggregateException.

Notes to Callers
Since the continuation is executed synchronously, this method should only be used for lightweight continuation functions. For non-trivial continuation functions, use ThenTSource, TResult(TaskTSource, FuncTaskTSource, TaskTResult, Boolean) instead.

.NET for Windows Store apps

.NET Framework

Portable Class Library

Rackspace Threading Library

Reference