Page Settings in .NET framework

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You may have noticed that both the MarginBounds and the PageSettings properties of the PrintPageEventArgs class are read-only Changing PageSettings on-the-fly (including the margins) requires handling the print document's QueryPageSettings event: void printDocument1_QueryPageSettings( object sender, QueryPageSettingsEventArgs e) { // Set margins to 05" all the way around // (measured in 100ths of an inch) ePageSettingsMargins = new Margins(50, 50, 50, 50); } QueryPageSettingsEventArgs provides only a Cancel property and a PageSettings property The latter is an instance of the PageSettings class: class PageSettings : ICloneable { // Constructors public PageSettings(); public PageSettings(PrinterSettings printerSettings); // Properties public Rectangle Bounds { get; } public bool Color { get; set; } public bool Landscape { get; set; } public Margins Margins { get; set; } public PaperSize PaperSize { get; set; } public PaperSource PaperSource { get; set; } public PrinterResolution PrinterResolution { get; set; } public PrinterSettings PrinterSettings { get; set; } } In addition to setting the margins, the PageSettings object can be set to indicate whether color is allowed, the size and source of the paper, the printer resolution, and other printerspecific settings You could adjust these properties programmatically during the printing process, but it's friendlier to let the user do it before the printing begins For that, you use the PageSetupDialog component shown in Figure 78
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Figure 78 PageSetupDialog Component with Default Page Settings
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Before the page setup dialog can be shown, the Document property must be set: PageSetupDialog pageSetupDialog1; void InitializeComponent() { thispageSetupDialog1 = new PageSetupDialog(); } void pageSetupButton_Click(object sender, EventArgs e) { // Let the user select page settings pageSetupDialog1Document = printDocument1; pageSetupDialog1ShowDialog(); } When the user presses OK, the PageSettings properties are adjusted for that instance of the PrintDocument and are used at the next printing The PageSetupDialog itself provides some useful options: class PageSetupDialog : CommonDialog, IComponent, IDisposable { // Constructors public PageSetupDialog(); // Properties public bool AllowMargins { get; set; } public bool AllowOrientation { get; set; } public bool AllowPaper { get; set; } public bool AllowPrinter { get; set; } public PrintDocument Document { get; set; } public Margins MinMargins { get; set; } public PageSettings PageSettings { get; set; } public PrinterSettings PrinterSettings { get; set; }
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public bool ShowHelp { get; set; } public bool ShowNetwork { get; set; } // Events public event EventHandler HelpRequest; // Methods public virtual void Reset(); } The AllowXxx properties dictate whether the dialog allows the user to change things, such as the margins or the orientation (all these properties default to true) The MinMargins property sets the minimum margins that the user can't go below The ShowHelp property indicates whether the help button should be shown By default it isn't shown, because there's no builtin help to show (other than the pop-up help) If you set ShowHelp to true, make sure to subscribe to the HelpRequest event so that when the user presses the help button, you can provide help Finally, the ShowNetwork property determines whether the user can navigate the network to find a printer after pressing the Printer button (assuming AllowPrinter is set to true) [ Team LiB ]
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[ Team LiB ]
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Printer Settings
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So far, all the printing in this chapter has been done to the default printer, as defined by Windows itself The user can change the printer for a document via the Printer button on the PageSetupDialog It's more common, however, to allow the user to choose the printer after choosing the Print item from the File menu For this you use the PrintDialog component, as shown in Figure 79
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Figure 79 The PrintDialog Component
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Using the PrintDialog component looks like this: PrintDialog printDialog1; void InitializeComponent() { thisprintDialog1 = new PrintDialog(); // Can set the PrintDialog's Document property // in the Property Browser thisprintDialog1Document = thisprintDocument1; } void printButton_Click(object sender, SystemEventArgs e) { // Let the user choose the printer if( printDialog1ShowDialog() == DialogResultOK ) { printDocument1Print(); } } Like PageSetupDialog, the PrintDialog component allows you to set a number of options
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before it is shown: sealed class PrintDialog : CommonDialog, IComponent, IDisposable { // Constructors public PrintDialog(); // Properties public bool AllowPrintToFile { get; set; } public bool AllowSelection { get; set; } public bool AllowSomePages { get; set; } public PrintDocument Document { get; set; } public PrinterSettings PrinterSettings { get; set; } public bool PrintToFile { get; set; } public bool ShowHelp { get; set; } public bool ShowNetwork { get; set; } // Events public event EventHandler HelpRequest; // Methods public virtual void Reset(); } You must set the Document property before showing a PrintDialog object The other PrintDialog properties are similar in function to the PageSetupDialog properties A couple of properties are special, however, because they determine what to print Let's take a look
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