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Installer.BeforeUninstall Event

Occurs before the installers in the Installers property perform their uninstall operations.

[Visual Basic]
Public Event BeforeUninstall As InstallEventHandler
[C#]
public event InstallEventHandler BeforeUninstall;
[C++]
public: __event InstallEventHandler* BeforeUninstall;

[JScript] In JScript, you can handle the events defined by a class, but you cannot define your own.

Event Data

The event handler receives an argument of type InstallEventArgs containing data related to this event. The following InstallEventArgs property provides information specific to this event.

Property Description
SavedState Gets an IDictionary that represents the current state of the installation.

Example

[Visual Basic, C#, C++] The following example demonstrates the BeforeUninstall event. It is raised by the OnBeforeUninstall method.

[Visual Basic] 
' MyInstaller is derived from the class 'Installer'.
Sub New()
   MyBase.New()
   AddHandler BeforeUninstall, AddressOf BeforeUninstallEventHandler
End Sub 'New

Private Sub BeforeUninstallEventHandler(sender As Object, e As InstallEventArgs)
   ' Add steps to perform any actions before the Uninstall process.
   Console.WriteLine("Code for BeforeUninstallEventHandler")
End Sub 'BeforeUninstallEventHandler

[C#] 
// MyInstaller is derived from the class 'Installer'.
MyInstaller() : base()
{
   BeforeUninstall += new InstallEventHandler(BeforeUninstallEventHandler);
}
private void BeforeUninstallEventHandler(object sender, InstallEventArgs e)
{
   // Add steps to perform any actions before the Uninstall process.
   Console.WriteLine("Code for BeforeUninstallEventHandler"); 
}

[C++] 
private:
    // MyInstaller is derived from the class 'Installer'.
    MyInstaller() {
        BeforeUninstall += new InstallEventHandler(this, &MyInstaller::BeforeUninstallEventHandler);
    }

    void BeforeUninstallEventHandler(Object* sender, InstallEventArgs* e) {
        // Add steps to perform any actions before the Uninstall process.
        Console::WriteLine(S"Code for BeforeUninstallEventHandler");
    }

[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button Language Filter in the upper-left corner of the page.

Requirements

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

.NET Framework Security: 

See Also

Installer Class | Installer Members | System.Configuration.Install Namespace | AfterUninstall | OnAfterUninstall | OnBeforeUninstall

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