问取消安装程序在Visual Studio安装程序中安装安装程序

EN

 public override void Install(System.Collections.IDictionary stateSaver)
    {
        base.Install(stateSaver);

        // Retrieve configuration settings
        string targetSite = Context.Parameters["targetsite"];
        string targetVDir = Context.Parameters["targetvdir"];
        string targetDirectory = Context.Parameters["targetdir"];

        string value = Context.Parameters["value"];

        string connectionstring = Context.Parameters["db"];

        if (targetSite == null)
            throw new InstallException("IIS Site Name Not Specified!");

        if (targetSite.StartsWith("/LM/"))
            targetSite = targetSite.Substring(4);

        if (connectionstring == null)
            throw new InstallException("You did not specify a database to use!");

        if (value.Equals("123"))
        {

            RegisterScriptMaps(targetSite, targetVDir);
            ConfigureDatabase(targetSite, targetVDir, connectionstring);
        }

        else {

            Rollback(stateSaver);

        }
    }