当我选择 Microsoft XPS Document Writer 作为打印机时,我的输出是完美的,但是当我选择我的 HP 1020 打印机时,打印机输出空白副本...以下是代码...
private void printButton_Click(object sender, RoutedEventArgs e)
{
PrintInvoice pi = new PrintInvoice();
pi.DataContext = this.DataContext;
PrintDialog printDlg = new System.Windows.Controls.PrintDialog();
if (printDlg.ShowDialog() == true)
{
pi.Margin = new Thickness(30);
//now print the visual to printer to fit on the one page.
printDlg.PrintVisual(pi, "First Fit to Page WPF Print");
}
}
最佳答案
这可能是由多种不同的原因造成的。您可以添加几个步骤,如果正确执行,可能会 cause the flying men to return with goods and knowledge.
首先,您应该缩放到打印页面(来自 a2zdotnet 的代码):
System.Printing.PrintCapabilities capabilities =
printDlg.PrintQueue.GetPrintCapabilities(printDlg.PrintTicket);
//get scale of the print wrt to screen of WPF visual
double 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
Size 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(this, "Code ganked from http://www.a2zdotnet.com/View.aspx?id=66");
cargo-cult 代码在 Measure 和 Arrange 步骤中。通常,如果您调用 Measure 并传入一个 new Size(Double.MaxValue, Double.MaxValue)
,这就是您需要做的所有事情。
第二个仪式涉及碰撞调度员。
visual.DataContext = foo;
Dispatcher.Invoke((Action)()=>{;}); // bamp
// print here
试试这些,看看是否有帮助。
关于c# - WPF 打印问题,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/4794480/