wpf - 如何打印wpf窗口而不将其显示在屏幕上？

Question

我有一个要求，我需要打印完整的表单而不将其显示在屏幕上。

我需要的是:

1. 初始化表单
2. 打印

全部不显示在屏幕上。

请问有什么建议吗？

Answer 1

您可以使用 PrintDialog.PrintVisual 方法来执行此操作。

var capabilities = printDlg.PrintQueue.GetPrintCapabilities(printDlg.PrintTicket);

//get scale of the print wrt to screen of WPF visual
var scale = Math.Min(capabilities.PageImageableArea.ExtentWidth / this.ActualWidth, capabilities.PageImageableArea.ExtentHeight / this.ActualHeight);

//Transform the Visual to scale
this.LayoutTransform = new ScaleTransform(scale, scale);

// Get the size of the printer page
var sz = new Size(capabilities.PageImageableArea.ExtentWidth, capabilities.PageImageableArea.ExtentHeight);

//update the layout of the visual to the printer page size.
this.Measure(sz);
this.Arrange(new Rect(new Point(capabilities.PageImageableArea.OriginWidth, capabilities.PageImageableArea.OriginHeight), sz));

//now print the visual to printer to fit on the one page.
printDlg.PrintVisual(visual, String.Empty);