InvokeRequired Property
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ISynchronizeInvoke.InvokeRequired Property

Gets a value indicating whether the caller must call Invoke when calling an object that implements this interface.

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

bool InvokeRequired { get; }

Property Value

Type: System.Boolean
true if the caller must call Invoke; otherwise, false.

This property determines whether the caller must call Invoke when making method calls to an object that implements this interface. Such objects are bound to a specific thread and are not thread-safe. If you are calling a method from a different thread, you must use the Invoke method to marshal the call to the proper thread.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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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