IDTExtensibility2.OnStartupComplete Method

Occurs whenever an add-in, which is set to load when Visual Studio starts, loads.

Namespace:  Extensibility
Assembly:  Extensibility (in Extensibility.dll)

void OnStartupComplete(
	ref Array custom


Type: System.Array%

An empty array that you can use to pass host-specific data for use when the add-in loads.

On occasion, OnConnection does not occur correctly, such as when an add-in is loaded, but a component required by an add-in has not yet loaded. This is unusually due to the fact that Visual Studio has not yet started completely. Using OnStartupComplete guarantees that the Visual Studio integrated development environment (IDE) has completed the startup process.

public void OnStartupComplete(ref Array custom)
    // Notifies you when an add-in that is set to start when
    // Visual Studio starts has completed loading.
    System.Windows.Forms.MessageBox.Show("Add-in has loaded and is 

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