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But if you want to convert image to other file types, like converting image to byte array using C# code and converting image to stream by C# programming ... the AddVenue command is invoked. Always, that is, unless the status condition is matched. If the AddVenue class sets a flag of CMD_OK, the default view for the Command is overridden. The status element could simply contain another view that would be included in place of the default. Here, though, the forward element comes into play. By forwarding to another command, the configuration file delegates all responsibility for handling views to the new element. Parsing the Configuration File This is a reasonably flexible model for controlling display and command flow logic. The document, though, is not something that you would want to parse for every single request. We have already seen a solution to this problem. The ApplicationHelper class provides a mechanism for caching configuration data. Here is an extract: private function getOptions() { $this->ensure( file_exists( $this->config ), "Could not find options file" ); $options = @SimpleXml_load_file( $this->config ); // ...set DSN... $map = new woo_controller_ControllerMap(); foreach ( $options->control->view as $default_view ) { $stat_str = trim($default_view['status']); $status = woo_command_Command::statuses( $stat_str ); $map->addView( 'default', $status, (string)$default_view ); } // ... more parse code omitted ... woo_base_ApplicationRegistry::setControllerMap( $map ); } Parsing XML, even with the excellent SimpleXML package, is a wordy business and not particularly challenging, so I leave most of the details out here. The key thing to note is that the getOptions() method is only invoked if configuration has not been cached into the ApplicationRegistry object. Storing the Configuration Data The cached object in question is a ControllerMap. ControllerMap is essentially a wrapper around three arrays. We could use raw arrays, of course, but ControllerMap gives us the security of knowing that each array will follow a particular format. Here is the ControllerMap class: class woo_controller_ControllerMap { private $viewMap = array(); private $forwardMap = array(); private $classrootMap = array(); c# pdf to image open source: .NET PDF to Image and PDF to Text Converter Library - Visual ... convert pdf to image asp.net c# Convert Scanned PDF into Image - MSDN - Microsoft
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You can use Ghostscript to convert PDF to images . ... has GPL license; it can be used from C# as command line tool executed with System. function addClassroot( $command, $classroot ) { $this->classrootMap[$command]=$classroot; } function getClassroot( $command ) { if ( isset( $this->classrootMap[$command] ) ) { return $this->classrootMap[$command]; } return $command; } function addView( $command='default', $status=0, $view ) { $this->viewMap[$command][$status]=$view; } function getView( $command, $status ) { if ( isset( $this->viewMap[$command][$status] ) ) { return $this->viewMap[$command][$status]; } return null; } function addForward( $command, $status=0, $newCommand ) { $this->forwardMap[$command][$status]=$newCommand; } function getForward( $command, $status ) { if ( isset( $this->forwardMap[$command][$status] ) ) { return $this->forwardMap[$command][$status]; } return null; } } The $classroot property is simply an associative array that maps command handles (that is, the names of the command elements in configuration) to the roots of Command class names (that is, AddVenue, as opposed to woo_command_AddVenue). This is used to determine whether the cmd parameter is an alias to a particular class file. During the parsing of the configuration file, the addClassroot() method is called to populate this array. The $forwardMap and $viewMap arrays are both two-dimensional, supporting combinations of commands and statuses. Recall this fragment: <command name="AddVenue"> <view>addvenue</view> <status value="CMD_OK"> <forward>AddSpace</forward> </status> </command> pdf to image c# Best 20 NuGet pdf-to-image Packages - NuGet Must Haves Package
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