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| ArcObjects namespaces > ArcCatalog > ESRI.ArcGIS.ArcCatalog > Interfaces > IG > IGxDocumentEvents Interface > IGxDocumentEvents.OpenDocument Event (ArcObjects .NET 10.4 SDK) | 
Fired when a document is opened.
[Visual Basic .NET] Public Event OpenDocument As OpenDocumentEventHandler
[C#] public event OpenDocumentEventHandler OpenDocument