WPF 的打印对话框和打印预览对话框 [英] Print dialog and print prewiew dialog for WPF

问题描述

是否有 WPF 的打印对话框与 WPF 中的打印预览对话框相结合，如 Google Chrome 或 Word 那样?

此时我使用 Windows 窗体中的打印预览对话框.我也尝试使用它的 WPF 版本.但是 WPF 没有 PrintPreviewDialog 或 PrintPrewiewControl.这是我的代码:

//到我的类文件的顶部:使用 Forms = System.Windows.Forms;//在同一个类的方法中:PageSettings setting = new PageSettings();setting.Landscape = true;_document = new PrintDocument();_document.PrintPage += _document_PrintPage;_document.DefaultPageSettings = 设置；Forms.PrintPreviewDialog printDlg = new Forms.PrintPreviewDialog();printDlg.Document = _document;打印Dlg.Height = 500;打印Dlg.Width = 200;尝试{if (printDlg.ShowDialog() == Forms.DialogResult.OK){_document.Print();}}捕获 (InvalidPrinterException){MessageBox.Show("未找到打印机.", "Error", MessageBoxButton.OK, MessageBoxImage.Error);}

我也搜索过 NuGet 包，但没有找到真正好的.

解决方案

你想要做的是从你想要打印的内容中创建一个 xpsDocument(一个 flowDocument) 并使用该 XpsDocument 来预览内容，例如假设您有以下 Xaml，以及您想要的 flowDocument打印其内容:

 <网格><Grid.RowDefinitions><RowDefinition Height="*"/><RowDefinition Height="自动"/></Grid.RowDefinitions><FlowDocumentScrollViewer><FlowDocument x:Name="FD"><段落><Image Source="http://www.wpf-tutorial.com/images/logo.png" Width="90" Height="90" Margin="0,0,30,0"/><Run FontSize="120">WPF</Run></段落><段落>WPF，代表<Bold>Windows Presentation Foundation</Bold>,是 Microsoft 最新的 GUI 框架方法，与 .NET 框架一起使用.一些优点包括:</段落><列表><列表项><段落>它更新，因此更符合当前标准</段落></ListItem><列表项><段落>微软正在将它用于许多新应用程序，例如视觉工作室</段落></ListItem><列表项><段落>它更灵活，因此您无需编写或购买新控件即可做更多事情</段落></ListItem></列表></FlowDocument></FlowDocumentScrollViewer><Button Content="Print" Grid.Row="1" Click="Button_Click"></Button></网格>

flowDocument 示例来自

Is there a print dialog for WPF that is combinated whit a print preview dialog in WPF like Google Chrome or Word does?

At this moment I use a the print preview dialog from Windows forms. I have also try for to use the WPF version of it. But WPF has no PrintPreviewDialog or PrintPrewiewControl. This is my code:

//To the top of my class file:
using Forms = System.Windows.Forms;

//in a methode on the same class:
PageSettings setting = new PageSettings();
setting.Landscape = true;

_document = new PrintDocument();
_document.PrintPage += _document_PrintPage;
_document.DefaultPageSettings = setting ;

Forms.PrintPreviewDialog printDlg = new Forms.PrintPreviewDialog();
printDlg.Document = _document;
printDlg.Height = 500;
printDlg.Width = 200;

try
{
    if (printDlg.ShowDialog() == Forms.DialogResult.OK)
    {
        _document.Print();
    }
}
catch (InvalidPrinterException)
{
    MessageBox.Show("No printers found.", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
}

I've also searched for a NuGet package but nothing found really good.

解决方案

What you want to do, is to create an xpsDocument out from the content you want to print (a flowDocument) and use that XpsDocument to preview the content, for example let say you have the following Xaml, with a flowDocument that you want to print its content :

 <Grid>
    <Grid.RowDefinitions>
        <RowDefinition Height="*"/>
        <RowDefinition Height="Auto"/>
    </Grid.RowDefinitions>
    <FlowDocumentScrollViewer>
        <FlowDocument x:Name="FD">
            <Paragraph>
                <Image Source="http://www.wpf-tutorial.com/images/logo.png" Width="90" Height="90" Margin="0,0,30,0" />
                <Run FontSize="120">WPF</Run>
            </Paragraph>

            <Paragraph>
                WPF, which stands for
                <Bold>Windows Presentation Foundation</Bold> ,
                is Microsoft's latest approach to a GUI framework, used with the .NET framework.
                Some advantages include:
            </Paragraph>

            <List>
                <ListItem>
                    <Paragraph>
                        It's newer and thereby more in tune with current standards
                    </Paragraph>
                </ListItem>
                <ListItem>
                    <Paragraph>
                        Microsoft is using it for a lot of new applications, e.g. Visual Studio
                    </Paragraph>
                </ListItem>
                <ListItem>
                    <Paragraph>
                        It's more flexible, so you can do more things without having to write or buy new controls
                    </Paragraph>
                </ListItem>
            </List>

        </FlowDocument>
    </FlowDocumentScrollViewer>        
    <Button Content="Print" Grid.Row="1" Click="Button_Click"></Button>
</Grid>

the flowDocument Sample is from Wpf tutorials site

the print button Click event handler should looks like this :

 private void Button_Click(object sender, RoutedEventArgs e)
    {
if (File.Exists("printPreview.xps"))
            {
                File.Delete("printPreview.xps");
            }
        var xpsDocument = new XpsDocument("printPreview.xps", FileAccess.ReadWrite);
        XpsDocumentWriter writer = XpsDocument.CreateXpsDocumentWriter(xpsDocument);
        writer.Write(((IDocumentPaginatorSource)FD).DocumentPaginator);            
        Document = xpsDocument.GetFixedDocumentSequence();
        xpsDocument.Close();
        var windows = new PrintWindow(Document);
        windows.ShowDialog();
    }

public FixedDocumentSequence Document { get; set; }

so here you are mainly :

• Creating an Xps document and storing it in printPreview.xps file,
• Writing the FlowDocument content into that file,
• passing the XpsDocument to the PrintWindow in which you will handle the preview and the print actions,

here how the PrintWindow looks like :

<Grid>
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="*"/>
        <ColumnDefinition Width="1.5*"/>
    </Grid.ColumnDefinitions>
    <StackPanel>
        <Button Content="Print" Click="Button_Click"></Button>
        <!--Other print operations-->
    </StackPanel>
    <DocumentViewer  Grid.Column="1" x:Name="PreviewD">            
    </DocumentViewer>
</Grid>

and the code behind :

public partial class PrintWindow : Window
{
    private FixedDocumentSequence _document;
    public PrintWindow(FixedDocumentSequence document)
    {
        _document = document;
        InitializeComponent();
        PreviewD.Document =document;
    }

    private void Button_Click(object sender, RoutedEventArgs e)
    {
        //print directly from the Xps file 
    }
}

the final result looks something like this

Ps: to use XpsDocument you should add a reference to System.Windows.Xps.Packaging namespace

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