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WindowsFormsApplicationBase::OnRun Method

Provides the starting point for when the main application is ready to start running, after the initialization is done.

Namespace:  Microsoft.VisualBasic.ApplicationServices
Assembly:  Microsoft.VisualBasic (in Microsoft.VisualBasic.dll)

protected:
virtual void OnRun()

By default, before it enters the Windows Forms message loop, this method calls the OnCreateMainForm (to create the application's main form) and HideSplashScreen (to close the splash screen) methods:

  • OnCreateMainForm. Provides a way for a designer to emit code that initializes the main form.

    By default, this method does nothing. However, when you select a main form for your application in the Visual Basic Project Designer, the designer overrides the OnCreateMainForm method with a method that sets the MainForm property to a new instance of the main form.

  • HideSplashScreen. If the application has a splash screen defined and it is open, this method closes the splash screen.

    By default, this method closes the splash screen.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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