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RuntimeSerializationFormattersSoap namespace (To use SoapFormatter, you also need to add a reference to the assembly SystemRuntimeSerializationFormattersSoapdll) Both methods serialize all the private and public data in a class, along with the assembly and type information needed to ensure that the object can be deserialized exactly To create a simple example, let s consider what you need to do to rewrite the logging page shown earlier to use object serialization instead of writing data directly to the file The first step is to change the Log() method so that it creates a LogEntry object and uses the BinaryFormatter to serialize it into the existing file, as follows: private void Log(string message) { // Check for the file FileMode mode; if (ViewState["LogFile"] == null) { ViewState["LogFile"] = GetFileName(); mode = FileModeCreate; } else { mode = FileMode.

Most of the code in an ASP.NET web page is placed inside event handlers that react to web control events. Using Visual Studio, you can add an event handler to your code in three ways: Type it in by hand: In this case, you add the method directly to the page class. You must specify the appropriate parameters so that the signature of the event handler exactly matches the signature of the event you want to handle. You ll also need to edit the control tag so that it links the control to the appropriate event handler. (Alternatively, you can use delegates to wire this up programmatically.) Double-click a control in design view: In this case, Visual Studio will create an event handler for that control s default event (and adjust the control tag accordingly). For example, if you double-click the page, it will create a Page.Load event handler. If you double-click a Button control, Visual Studio will create an event handler for the Click event.

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NET never serves skin files directly instead, they re used behind the scenes to define a theme A skin file is essentially a list of control tags with a twist The control tags in a skin file don t need to completely define the control Instead, they need to set only the properties you want to standardize For example, if you re trying to apply a consistent color scheme, you might be interested in setting properties such as ForeColor and BackColor only When you add a control tag for the ListBox control, it might look like this: <asp:ListBox runat="server" ForeColor="White" BackColor="Orange"/> The runat="server" portion is always required Everything else is optional The id attribute is not allowed in a theme, because it s required to uniquely identify each control.

Append; } // Write the message string fileName = (string)ViewState["LogFile"]; using (FileStream fs = new FileStream(fileName, mode)) { // Create a LogEntry object LogEntry entry = new LogEntry(message); // Create a formatter BinaryFormatter formatter = new BinaryFormatter();.

Choose the event from the Properties window: Just select the control, and click the lightning bolt in the Properties window. You ll see a list of all the events provided by that control. Doubleclick in the box next to the event you want to handle, and Visual Studio will automatically generate the event handler in your page class and adjust the control tag. The second and third options are the most convenient. The third option is the most flexible, because it allows you to select a method in the page class that you ve already created. Just select the event in the Properties window, and click the drop-down arrow at the right. You ll see a list that includes all the methods in your class that match the signature this event requires. You can then choose a method from the list to connect it. Figure 2-21 shows an example where the Button.Click event is connected to the Button_Click() method in your page class. The only limitation of this technique is that it works exclusively with web controls, not server-side HTML controls.

It s up to you whether you create multiple skin files or place all your control tags in a single skin file Both approaches are equivalent, because ASPNET treats all the skin files in a theme directory as part of the same theme definition Often, it makes sense to separate the control tags for complex controls (such as the data controls) into separate skin files Figure 15-2 shows the relationship between themes and skins in more detail..

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