/// <summary>
/// Opens an installer package and initializes an install session.
/// </summary>
/// <param name="packagePath">path to the patch package</param>
/// <param name="commandLine">command line property settings</param>
/// <exception cref="InstallerException">There was an error installing the product</exception>
/// <remarks><p>
/// To completely remove a product, set REMOVE=ALL in <paramRef name="commandLine"/>.
/// </p><p>
/// This method displays the user interface with the current settings and
/// log mode. You can change user interface settings with the <see cref="SetInternalUI(InstallUIOptions)"/>
/// and <see cref="SetExternalUI(ExternalUIHandler,InstallLogModes)"/> functions. You can set the log mode with the
/// <see cref="EnableLog(InstallLogModes,string)"/> function.
/// </p><p>
/// The <see cref="RebootRequired"/> and <see cref="RebootInitiated"/> properties should be
/// tested after calling this method.
/// </p><p>
/// Win32 MSI API:
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiinstallproduct.asp">MsiInstallProduct</a>
/// </p></remarks>
public static void InstallProduct(string packagePath, string commandLine)
{
uint ret = NativeMethods.MsiInstallProduct(packagePath, commandLine);
Installer.CheckInstallResult(ret);
}