OpenStateChange Event of the AxWindowsMediaPlayer Object

The OpenStateChange event occurs when the openState property changes value.

private void player_OpenStateChange(
  object sender,
  _WMPOCXEvents_OpenStateChangeEvent e

[Visual Basic]
Private Sub player_OpenStateChange(
  sender As Object,
  e As _WMPOCXEvents_OpenStateChangeEvent
) Handles player.OpenStateChange

Event Data

The handler associated with this event is of type AxWMPLib._WMPOCXEvents_OpenStateChangeEventHandler. This handler receives an argument of type AxWMPLib._WMPOCXEvents_OpenStateChangeEvent, which contains the following property related to this event.

Property Description
NewState System.Int32Specifies the new open state. For a table of values, see openState.


Windows Media Player can go through several open states while it attempts to open a network file, such as locating the server, connecting to the server, and finally opening the file. This event will be fired each time the open state changes.

Windows Media Player states are not guaranteed to occur in any particular order. Furthermore, not every state necessarily occurs during a sequence of events. You should not write code that relies upon state order.


Windows Media Player 9 Series or later
AxInterop.WMPLib.dll (AxInterop.WMPLib.dll.dll)

See also

AxWindowsMediaPlayer Object (VB and C#)

AxWindowsMediaPlayer.openState (VB and C#)