Use the DuplicateHandle function to duplicate the handle. Use the CloseHandle function to close the handle. The system closes the handle automatically when the process terminates. The event object is destroyed when its last handle has been closed.

static extern bool DuplicateHandle(IntPtr hSourceProcessHandle,

        DuplicateHandle = 0x00000040,

    DuplicateHandle = &H40

    /// Required to duplicate a handle using DuplicateHandle.

    AllAccess = CreateThread Or DuplicateHandle Or QueryInformation Or SetInformation Or Terminate Or VMOperation Or VMRead Or VMWrite Or Synchronize

    ''' <summary>Enables usage of the process handle as either the source or target process in the DuplicateHandle function to duplicate a handle.</summary>

    DuplicateHandle = &H40

     DuplicateHandle = 0x00000040

     """Enables usage of the process handle as either the source or target process in the DuplicateHandle function to duplicate a handle."""