crystal reports barcode DATA LOADING AND UNLOADING in Objective-C

Produce Data Matrix 2d barcode in Objective-C DATA LOADING AND UNLOADING

protected int _RandomHeight { get { _shapeHeight = _random.Next(0, _drawAreaHeight); return _shapeHeight; } } protected Pen _RandomColorPen { get { return new Pen(Color.FromArgb(_random.Next(0, 255), _random.Next(0, 255), _random.Next(0, 255))); } } #endregion #region Protected Method protected void _Reset() { if (null != _bitmap) { Graphics.FromImage(this._bitmap).Clear(Color.Black); } } #endregion abstract public void Draw(); } } A class derived from this base class is responsible for drawing a specific shape. Listing 6-11 shows how to draw a Circle bitmap programmatically on the panel surface. A protected function, _Reset(), is called before drawing. This function clears the previously drawn bitmap and sets the bitmap to the background color. When an application needs to draw different shapes on the same panel surface, it just needs to dynamically construct a drawing class and pass in the panel object instance. The implementation will be presented later in this exercise. Listing 6-11. Derived Drawing Class Used to Draw a Circle Bitmap on a Panel Surface using using using using System; System.Drawing; System.Drawing.Imaging; System.Windows.Forms;

In addition to implementing a contract, each endpoint also contains an address and a binding. The address is essentially a URL that defines the location of the endpoint (and the service by extension) in the network. Bindings are a little more interesting. The endpoint binding defines what protocols, transport, and encoding the endpoint will use for all its communication. You can create a custom binding, but WCF provides several useful built-in bindings. Table 9-2 shows a partial list of these. Table 9-2. A Few of WCF s Standard Bindings

Figure 6-4. Static fields with no class instances can still be assigned to and read from, because the field is associated with the class, and not an instance. The code in Figure 6-4 produces the following output: Mem2 = 5

The foreach statement allows you to sequentially access each element in an array. It s actually a more general construct in that it also works with other collection types as well but this section only discusses its use with arrays. 20 covers its use with other collection types. The important points of the foreach statement are the following: The iteration variable is a temporary variable of the same type as the elements of the array. The foreach statement uses the iteration variable to sequentially represent each element in the array. The syntax of the foreach statement is shown here, where Type is the type of the elements of the array. You can explicitly supply its type, or you can let it be implicitly typed and inferred by the compiler, since the compiler knows the type of the array. Identifier is the name of the iteration variable. ArrayName is the name of the array to be processed. Statement is a simple statement or a block that is executed once for each element in the array.

It is very common for performance optimization to need to retrieve data or code from an external source after a page is loaded. jQuery makes this very easy.

At this point, the application server is configured and is ready for use by clients. The same application server can be used by Windows Forms, Web Forms, and Web Services clients even all at once, if you choose. The only requirement is that both the application server and clients have the same version of your business assemblies installed. To configure a Windows Forms client, you need to edit the app.config file. To configure either a Web Forms or Web Service client, you need to edit the web.config file. In either case, the configuration file should contain the following bold lines: < xml version="1.0" encoding="utf-8" > <configuration> <appSettings> <add key="CslaAuthentication" value="Csla" /> <add key="CslaDataPortalProxy" value="Csla.DataPortalClient.RemotingProxy, Csla"/> <add key="CslaDataPortalUrl" value="http://localhost/RemotingHost/RemotingPortal.rem"/> </appSettings> <connectionStrings> </connectionStrings> </configuration> The CslaDataPortalProxy element specifies that the data portal should use the remoting channel, and the CslaDataPortalUrl element specifies the URL of the server. You ll need to replace localhost with the name (and possibly the TCP port) of your server, and RemotingHost

For example, if Category and SalesMgr are both in the Row labels area, there s no custom calculation that shows what percent of Bar sales were by Parent. With that layout, if you use the % of Column custom calculation, it shows the percent of the grand total for each sales manager for each product. Change the layout so Category is in the Columns area, as shown in the table at the right in Figure 3-18, and apply a % of Column custom calculation, to see the percent sold by each manager in each category.

<param name="minRuntimeVersion" value="3.0.40818.0" /> <param name="autoUpgrade" value="true" /> <a href="http://go.microsoft.com/fwlink/ LinkID=149156&v=3.0.40818.0" style="text-decoration:none"> <img src="http://go.microsoft.com/fwlink/ LinkId=161376" alt="Get Microsoft Silverlight" style="border-style:none"/> </a> </object> 5. Open MainPage.xaml in the sender project and add a button with the following XAML: <Button x:Name="cmdSendMessage" Content="Send Message" Width="200" Height="200"></Button> 6. Open MainPage.xaml.cs in the sender project and import the following namespace: using System.Windows.Messaging; 7. Amend the code in MainMenu.xaml.cs to the following: public partial class MainPage : UserControl { LocalMessageSender Channel1 = new LocalMessageSender("Channel1"); public MainPage() { this.Loaded += new RoutedEventHandler(MainPage_Loaded); Channel1.SendCompleted += new EventHandler<SendCompletedEventArgs>(Channel1_SendCompleted); InitializeComponent(); } void Channel1_SendCompleted(object sender, SendCompletedEventArgs e) { //Code to run after message is sent } void MainPage_Loaded(object sender, RoutedEventArgs e) { this.cmdSendMessage.Click += new RoutedEventHandler(cmdSendMessage_Click); } void cmdSendMessage_Click(object sender, RoutedEventArgs e) { Channel1.SendAsync("Hello from sender project"); } } 8. Open the receiver project MainPage.xaml and add a text box to display the received messages: <TextBlock>Received messages:</TextBlock> <TextBox x:Name="txtMessage"></TextBox>

Thanks to the common code discussed earlier, none of these menu options are difficult to implement. For instance, when the user chooses the menu option to edit the list of roles, the code simply checks to see if the RolesEdit user control is already loaded. If it is, the existing user control is made active; otherwise, a new one is created and displayed: private void EditRolesToolStripMenuItem_Click( object sender, EventArgs e) { // see if this form is already loaded foreach (Control ctl in Panel1.Controls) { if (ctl is RolesEdit) { ShowWinPart((WinPart)ctl); return; } } // it wasn't already loaded, so show it. AddWinPart(new RolesEdit()); } A slightly more complex variation occurs when the user clicks the menu to add a project or resource. In both cases, a new instance of the appropriate business object is created and is passed to a new instance of the appropriate user control. For example, when the user opts to add a new project, this code is run: private void NewProjectToolStripMenuItem_Click( object sender, EventArgs e) { using (StatusBusy busy = new StatusBusy("Creating project...")) { AddWinPart(new ProjectEdit(Project.NewProject())); } } Project.NewProject() is called to create the new Project object, and it is then passed to the constructor of a ProjectEdit user control. That user control, now populated with data from the Project object, is then added to the list of active user controls and is displayed.