SpinWait.SpinUntil Method (Func<Boolean>, TimeSpan)

.NET Framework (current version)

Spins until the specified condition is satisfied or until the specified timeout is expired.

Namespace:   System.Threading
Assembly:  mscorlib (in mscorlib.dll)

public static bool SpinUntil(
	Func<bool> condition,
	TimeSpan timeout


Type: System.Func<Boolean>

A delegate to be executed over and over until it returns true.

Type: System.TimeSpan

A TimeSpan that represents the number of milliseconds to wait, or a TimeSpan that represents -1 milliseconds to wait indefinitely.

Return Value

Type: System.Boolean

True if the condition is satisfied within the timeout; otherwise, false

Exception Condition

The condition argument is null.


timeout is a negative number other than -1 milliseconds, which represents an infinite time-out -or- timeout is greater than MaxValue.

Universal Windows Platform
Available since 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1
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