barcodes in crystal reports 2008 Printer Security in Objective-C

Render data matrix barcodes in Objective-C Printer Security

s Note What if you need more space for data output You can set the left and right margins to 0 inches.

The |> forward pipe operator is perhaps the most important operator in F# programming. Its definition is deceptively simple:

audits performed by Nessus are coded as plug-ins. In order to download plug-ins, you ll need to register for either the HomeFeed or the ProfessionalFeed. The HomeFeed is free, but can only be used by home users. If you re planning on using Nessus for professional or government use, you ll need to purchase the ProfessionalFeed. When you register for a feed, an activation code will be emailed to you. NOTE: An older version of nessus that does not require a registration key is available via MacPorts. During the install, it gives you the option to choose whether you want the server to start when the system boots or whether you want to start it manually. If the system is a dedicated Nessus server, then you will want the Nessus daemon to launch at boot. Otherwise, it s better to launch manually as needed, especially if Nessus is installed on a laptop (it can be a sizeable resource hog). After installation, launch the Nessus Server Manager application, enter your activation code and click Register. Once your copy of Nessus is registered, you ll be able to start the Nessus Server (see Figure 17 3).

Figure 6-4. The finished Accordion example 1. Create a new Silverlight application in Visual Studio 2010 called AccordionControl. Allow Visual Studio to create a Web Application project to host the application. With the MainPage.xaml file selected, position the cursor in the source in the Layout Grid. Find and double-click on the Accordion control in the Toolbox. This will add the control to the page, as well as the proper namespace reference: xmlns:toolkit="http://schemas.microsoft.com/winfx/2006/xaml/presentation/toolkit" 3. After you ve added the Accordion, right-click on the control in the design view and select Reset Layout All, as shown in Figure 6-5. Then Name the Accordion BookList, set its Width to 200, and specify a Margin of 10.

private var html:HTML; private var timer:Timer = new Timer(1, 10000); protected function initializeHandler(event:FlexEvent):void { html = new HTML(); html.width = 400; html.height = 400; html.addEventListener( Event.COMPLETE, onComplete ); component.addChild( html ); } private function loadHTMLCode(htmlText:XML):void { timer.start(); html.htmlText = htmlText; } private function loadHTMLPage(location:String):void { timer.start(); html.location = location; } private function onComplete(event:Event):void { trace("page loaded after: "); label.text = "HTML code executed in " + this.timer.currentCount + " seconds"; timer = new Timer(1, 10000); } ]]> </fx:Script> <fx:Declarations> <s:RadioButtonGroup id="radiogroup"/> </fx:Declarations> <mx:UIComponent id="component" width="400" height="400" x="10" y="42"/>

<RowStyle BackColor="#FFFBD6" ForeColor="#333333" /> <SelectedRowStyle BackColor="#FFCC66" Font-Bold="True" ForeColor="Navy" /> <PagerStyle BackColor="#FFCC66" ForeColor="#333333" HorizontalAlign="Center" /> <HeaderStyle BackColor="#990000" Font-Bold="True" ForeColor="White" /> <AlternatingRowStyle BackColor="White" /> </asp:GridView> </div> <asp:ObjectDataSource ID="ObjectDataSource1" runat="server" SelectMethod="GetProducts" TypeName="localhost.ECommerceService"> </asp:ObjectDataSource> <br /> <asp:HyperLink ID="HyperLink1" runat="server" Font-Bold="True" NavigateUrl="~/ShoppingCart.aspx">Go To Shopping Cart</asp:HyperLink> </form> </body> </html> Notice the use of the Eval() data-binding expression in binding columns such as Id, Name, UnitPrice, and Description to various labels. To configure the Object Data Source control, you need to set its TypeName property to localhost.ECommerceService. Also, set its SelectMethod property to GetProducts(). At run time the Object Data Source control creates an instance of the class specified by the TypeName property and calls SelectMethod on it. The returned data is then supplied to the GridView. There is a hyperlink at the bottom of the web form that points to ShoppingCart.aspx. This way, the user can navigate to the shopping cart. Now go to the code-behind file of the web form and import the localhost namespace. Remember that localhost is the web reference name that you specified while creating the web service proxy. Each user should have a unique shopping cart ID. Though you can use any unique ID, it is best to use Globally Unique Identifiers (GUIDs) so you are sure that the cart has a unique value globally. The code that generates a GUID for a user is shown in Listing B-11. Listing B-11. Creating a Unique Shopping Cart Identifier protected void Page_Load(object sender, EventArgs e) { if (Session["cartid"] == null) { Session["cartid"]= Guid.NewGuid().ToString(); } }

You can add a session timeout feature to this process, to avoid the token being alive forever. In that case, set the session timeout when creating the token. Save the session timeout value on the server. On every request that carries the token along, verify whether the session is still valid (i.e., the timeout has not been activated yet). If not, ask the user to pass the credentials one more time or keep extending the timeout with every request so that the user session is kept alive so long as the user is not inactive for the duration of the timeout. These are choices that should be made depending on the application s authentication and authorization needs.

At the time of writing, here are some specific recommendations from the authors of this book: