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Installer::BeforeRollback Event
Visual Studio 2010
Occurs before the installers in the Installers property are rolled back.
Assembly: System.Configuration.Install (in System.Configuration.Install.dll)
The following example demonstrates the BeforeRollback event. It overrides the Install method and explicitly throws an ArgumentException so that the Rollback method is called. When the Rollback is complete, the BeforeRollback event occurs and a message is displayed.
#using <System.dll> #using <System.Configuration.Install.dll> using namespace System; using namespace System::Collections; using namespace System::ComponentModel; using namespace System::Configuration::Install; // Set 'RunInstaller' attribute to true. [RunInstaller(true)] ref class MyInstallerClass: public Installer { public: MyInstallerClass() { // Attach the 'BeforeRollback' event. this->BeforeRollback += gcnew InstallEventHandler( this, &MyInstallerClass::MyInstaller_BeforeRollBack ); // Attach the 'AfterRollback' event. this->AfterRollback += gcnew InstallEventHandler( this, &MyInstallerClass::MyInstaller_AfterRollback ); } private: // Event handler for 'BeforeRollback' event. void MyInstaller_BeforeRollBack( Object^ sender, InstallEventArgs^ e ) { Console::WriteLine( "" ); Console::WriteLine( "BeforeRollback Event occured." ); Console::WriteLine( "" ); } // Event handler for 'AfterRollback' event. void MyInstaller_AfterRollback( Object^ sender, InstallEventArgs^ e ) { Console::WriteLine( "" ); Console::WriteLine( "AfterRollback Event occured." ); Console::WriteLine( "" ); } public: // Override the 'Install' method. virtual void Install( IDictionary^ savedState ) override { Installer::Install( savedState ); // Explicitly throw an exception so that roll back is called. throw gcnew ArgumentException( "Arg Exception" ); } // Override the 'Commit' method. virtual void Commit( IDictionary^ savedState ) override { Installer::Commit( savedState ); } // Override the 'Rollback' method. virtual void Rollback( IDictionary^ savedState ) override { Installer::Rollback( savedState ); } }; int main() { Console::WriteLine( "Usage : installutil.exe Installer_BeforeRollback.exe " ); }
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
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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