在 WPF 中使用 PrintDialog 打印画布答案

【问题标题】：Printing Canvas using PrintDialog in WPF在 WPF 中使用 PrintDialog 打印画布
【发布时间】：2015-12-20 15:24:23
【问题描述】：

我正在尝试通过将高度和宽度分别设置为 29.7 厘米和 21 厘米来打印 A4 尺寸的画布。

我在 Windows 7 设备上获得了正确的输出。但对于 Windows 10 设备，打印输出与 Windows 7 设备不同。

真正的问题是没有为 Windows 10 设备维护高度和宽度。

请帮助和建议我！！

请查看以下代码：

Xaml：

<Window x:Class="TestSolution.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        VerticalContentAlignment="Stretch"
        HorizontalContentAlignment="Stretch"
        Height="29.7cm"
        Width="21cm"
        ResizeMode="NoResize">
    <Grid x:Name="grdTest" 
           VerticalAlignment="Stretch"
                HorizontalAlignment="Stretch"
           Height="29.7cm"
                Width="21cm">
         <Canvas x:Name="cnvTest"
                VerticalAlignment="Stretch"
                Height="29.7cm"
                Width="21cm"
                HorizontalAlignment="Stretch">
        </Canvas>               
    </Grid>         
</window>

代码背后

private void btn_Click(object sender, RoutedEventArgs e)
        {
            PrintDialog prnt = new PrintDialog();

            if (prnt.ShowDialog() == true)
            {
                prnt.PrintVisual(cnvTest, "Printing Canvas");
            }
            this.Close();
        }

【问题讨论】：

标签： c# asp.net wpf

【解决方案1】：

终于解决了。礼貌马格努斯（MM8）

请在下面的链接中找到解决方案

https://social.msdn.microsoft.com/Forums/en-US/b26c7898-169a-4726-b582-e79dc63f8450/printing-canvas-using-printdialog-in-wpf?forum=wpf

这是来自网站的答案副本，假设画布名称为 cnvTest：

private void btn_Click(object sender, RoutedEventArgs e)
{
    PrintDialog prnt = new PrintDialog();
        if (prnt.ShowDialog() == true)
        {
        Size pageSize = new Size(prnt.PrintableAreaWidth, prnt.PrintableAreaHeight);
        cnvTest.Measure(pageSize);
        cnvTest.Arrange(new Rect(5, 5, pageSize.Width, pageSize.Height));

        if (prnt.ShowDialog() == true)
        {
            prnt.PrintVisual(canvas, "Printing Canvas");
        }
    }
    this.Close();
}

【讨论】：

【解决方案2】：

你可以试试这个代码

System.Windows.Controls.PrintDialog printDialog = new System.Windows.Controls.PrintDialog();
        System.Drawing.Printing.PrinterSettings printer = new System.Drawing.Printing.PrinterSettings();
        System.Printing.LocalPrintServer localPrintServer = new System.Printing.LocalPrintServer();

        System.Printing.PrintTicket pt = new System.Printing.PrintTicket();
        System.Printing.PrintQueue pq = new System.Printing.PrintQueue(localPrintServer, printer.PrinterName, System.Printing.PrintSystemDesiredAccess.AdministratePrinter);

        System.Printing.PageMediaSize PMS = new System.Printing.PageMediaSize(canvas.ActualWidth + 20, canvas.ActualHeight + 20);
        System.Windows.Size pageSize = new System.Windows.Size(canvas.ActualWidth+20, canvas.ActualHeight+20);
        canvas.Arrange(new Rect(0, 0, pageSize.Width, pageSize.Height));
        canvas.Measure(pageSize);




        pt.PageMediaSize = PMS;
        pt.PageMediaType = System.Printing.PageMediaType.Unknown;


        pq.DefaultPrintTicket.PageMediaSize = PMS;
        pq.DefaultPrintTicket.PageMediaType = System.Printing.PageMediaType.Unknown;



        printDialog.PrintQueue = pq;
        printDialog.PrintTicket = pt;
        printDialog.PrintQueue.Commit();


        if (printDialog.ShowDialog() == true)
        {
            printDialog.PrintVisual(canvas, "Test");
        }

【讨论】：