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Application::OleRequired Method

Initializes OLE on the current thread.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public:
static ApartmentState OleRequired()

Return Value

Type: System.Threading::ApartmentState
One of the ApartmentState values.

Call this method before calling any Microsoft.Win32 method that requires OLE. OleRequired first checks to see if OLE has been initialized on the current thread. If not, it initializes the thread for OLE.

NoteNote

Unless a thread calls OLE methods directly, you do not need to call this method.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.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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