/// <summary>
/// Gets the default page settings object if there is any exception condition
/// </summary>
/// <param name="pageSettingString">The page settings string object</param>
/// <returns>Returns the page settings object</returns>
private PageSettings GetDefaultPageSettings(string pageSettingString)
{
// this should not be the case ever, still puttinga safety net, so that printing doesn't stop and it prints to
// default printer.
if (string.IsNullOrEmpty(pageSettingString))
{
throw new ArgumentNullException(Resources.PageSettingsNotNull);
}
PageSettings pageSettingsOfPrinter = null;
// Xml Document holding the page settings user has set
var textReader = new StringReader(pageSettingString);
var readerSettings = new XmlReaderSettings
{
DtdProcessing = DtdProcessing.Prohibit,
XmlResolver = null
};
using (XmlReader xmlReader = XmlReader.Create(textReader, readerSettings))
{
var pageSettingSetByUser = new XmlDocument
{
XmlResolver = null
};
pageSettingSetByUser.Load(xmlReader);
var pageSettingsRootNode = pageSettingSetByUser.DocumentElement;
pageSettingsOfPrinter = new PageSettings();
var printerName = PageSettingsHelper.GetPrinterNameFromPageSettings(pageSettingsRootNode);
if (string.IsNullOrEmpty(printerName))
{
throw new ArgumentException(Resources.PrinterNameMustNotBeNull);
}
pageSettingsOfPrinter.PrinterSettings.PrinterName = printerName;
this.SetDefaultPageSettings(pageSettingsOfPrinter, pageSettingsRootNode);
}
return(pageSettingsOfPrinter);
}
internal static string PrinterNameFromPageSettings(string pageSettings)
{
if (string.IsNullOrWhiteSpace(pageSettings))
{
return(null);
}
var value = string.Empty;
TextReader textReader = null;
try
{
textReader = new StringReader(pageSettings);
var readerSettings = new XmlReaderSettings()
{
DtdProcessing = DtdProcessing.Prohibit,
XmlResolver = null
};
using (var xmlReader = XmlReader.Create(textReader, readerSettings))
{
var doc = new XmlDocument
{
XmlResolver = null
};
doc.Load(xmlReader);
value = PageSettingsHelper.GetPrinterNameFromPageSettings(doc.DocumentElement);
}
}
finally
{
if (textReader != null)
{
textReader.Dispose();
}
}
return(value);
}
private PageSettings ProcessPageSettingsInternal(string pageSettingString)
{
if (string.IsNullOrEmpty(pageSettingString))
{
throw new ArgumentNullException("PageSettings set by user cannot be empty");
}
PageSettings pageSettingsOfPrinter = null;
TextReader textReader = null;
try
{
// Xml Document holding the page settings user has set
textReader = new StringReader(pageSettingString);
var readerSettings = new XmlReaderSettings
{
DtdProcessing = DtdProcessing.Prohibit,
XmlResolver = null
};
using (var xmlReader = XmlReader.Create(textReader, readerSettings))
{
XmlDocument pageSettingSetByUser = new XmlDocument
{
XmlResolver = null
};
pageSettingSetByUser.Load(xmlReader);
var pageSettingsRootNode = pageSettingSetByUser.DocumentElement;
// Gets the non empty nodes, i.e. nodes which actually user has set a value
var nonEmptyNodes = this.GetNonEmptyNodes(pageSettingsRootNode);
// Gets the printer name from the same xml. If printer name is not set or not valid , no need to go further
var printerName = PageSettingsHelper.GetPrinterNameFromPageSettings(pageSettingsRootNode);
if (string.IsNullOrWhiteSpace(printerName))
{
throw new ArgumentNullException(Resources.NoPrinterName);
}
// Get the default page settings of the printer and sets the printer name and orientation
pageSettingsOfPrinter = new PageSettings();
pageSettingsOfPrinter.PrinterSettings.PrintFileName = Constants.Empty;
pageSettingsOfPrinter.PrinterSettings.PrinterName = printerName;
pageSettingsOfPrinter.Landscape = this.IsLandscape(pageSettingsRootNode);
// serialize the pagesettings
var pageSettingsStringForPrinter = this.GetSerializedPageSettingsOfPrinter(pageSettingsOfPrinter);
if (string.IsNullOrEmpty(pageSettingsStringForPrinter))
{
throw new ArgumentNullException("PageSettings set by user cannot be empty");
}
// Copy the pageSettings from user set to one sent to printer
var pageSettingsTobeSet = this.TransferPageSettingsSetByUserToPrinter(pageSettingsStringForPrinter, nonEmptyNodes);
// finally deserialize it and give it back
pageSettingsOfPrinter = (PageSettings)XmlHelper.XmlDeserialize(typeof(PageSettings), pageSettingsTobeSet, string.Empty);
if (pageSettingsOfPrinter == null)
{
throw new ArgumentNullException(Resources.NoPageSettings);
}
}
}
finally
{
if (textReader != null)
{
textReader.Dispose();
}
}
return(pageSettingsOfPrinter);
}
