OleRequired Method

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.


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

.NET Framework
Available since 1.1
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