WPF 列印操作之PrintDialog

阿新 • • 發佈：2020-05-02

一、WPF 列印操作之PrintDialog

在WPF 中可以通過PrintDialog類方便的實現應用程式列印功能。

PrintDialog可以直接列印Wpf控制元件或者頁面，將呈現結果使用Windows系統預設印表機，執行列印。

            PrintDialog dialog = new PrintDialog();
            //顯示列印框，選擇份數和印表機
            if (dialog.ShowDialog() == true)
            {
                //  dialog.PrintVisual(printArea,"Print Test"); 

                dialog.PrintVisual(richText,"測試");
            }

            //直接列印
            // dialog.PrintVisual(richText,"測試");

關於PrintDialog的更多用法請參考：

https://docs.microsoft.com/zh-cn/dotnet/api/system.windows.controls.printdialog?redirectedfrom=MSDN&view=netcore-3.1

二、程式碼示例

1.wxml

<Window x:Class 
="CoreWpfApp1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local 
="clr-namespace:CoreWpfApp1"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <Canvas x:Name="printArea">
            <Ellipse Canvas.Left="192" Canvas.Top="24" Height="100" 
                     Stroke="Black" Width="200">
                <Ellipse.Fill>
                    <LinearGradientBrush>
                        <GradientStop Color="#FFAD0FC7" Offset="0" />
                        <GradientStop Color="#FF3359AD" Offset="1" />
                    </LinearGradientBrush>
                </Ellipse.Fill>
            </Ellipse>
            <TextBlock FontSize="20" FontWeight="Bold" Foreground="White"
                       Canvas.Left="198" Canvas.Top="63" Height="33">
                Visual Studio 2010</TextBlock>
            <Image Source="vs2010.jpg" Height="52" Width="90" 
                   Canvas.Left="388" Canvas.Top="0" />
            <RichTextBox x:Name="richText" Height="127" Width="315" Canvas.Left="433" Canvas.Top="103" TextChanged="RichTextBox_TextChanged">
                <FlowDocument>
                    <Paragraph>
                        <Run Text="RichTextBox"/>
                    </Paragraph>
                    <Paragraph>
                        <Run Text="RichTextBox"/>
                    </Paragraph>
                    <Paragraph>
                        <Run Text="RichTextBox"/>
                    </Paragraph>
                </FlowDocument>
            </RichTextBox>
            <Button Content="Button" Canvas.Left="207" Canvas.Top="230" Height="52" Width="137" Click="Button_Click_1"/>
        </Canvas>
        <Button Content="列印測試" HorizontalAlignment="Left" Margin="196,143,0" VerticalAlignment="Top" Height="60" Width="132" Click="Button_Click"/>
    </Grid>
</Window>

2.C#

private void Button_Click(object sender,RoutedEventArgs e)
{
    PrintDialog dialog = new PrintDialog();
    //顯示列印框，選擇份數和印表機
    if (dialog.ShowDialog() == true)
    {
        //  dialog.PrintVisual(printArea,"Print Test");
        dialog.PrintVisual(richText,"測試");
    }

    //直接列印
    // dialog.PrintVisual(richText,"測試");
}