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Console.KeyAvailable Property

Gets a value indicating whether a key press is available in the input stream.

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

static member KeyAvailable : bool with get

Property Value

Type: System.Boolean
true if a key press is available; otherwise, false.

ExceptionCondition
IOException

An I/O error occurred.

InvalidOperationException

Standard input is redirected to a file instead of the keyboard.

The property value is returned immediately; that is, the KeyAvailable property does not block input until a key press is available.

Use the KeyAvailable property in conjunction with only the ReadKey method, not the Read or ReadLine methods.

The following example demonstrates how to use the KeyAvailable property to create a loop that runs until a key is pressed.

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

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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