以编程方式打印 FixedDocument [英] Print FixedDocument programmatically

问题描述

我将 WPF FixedDocument 与数据绑定用于简单的发票报告.在软件本身内部查看时工作完美.

I am using a WPF FixedDocument with databinding for a simple invoice report. Works perfect when viewed inside the sofware itsself.

但我想一键打印一系列发票.当我选择 XPS 编写器时，以下代码完美运行(快速不脏，只需直接在视图模型中一张一张地加载发票，用于测试目的)，当我选择 XPS 编写器时，无法正确打印到真正的打印机.我看不到任何绑定到报告的数据.线条等所有图形元素都在那里，但没有数据.(当我使用相同的按钮打印到 de xps writer 打印机时，所有数据都存在并且正确......)

But i want to print a series of invoices in one click. The following code works perfect (quick 'n dirty, just loads an invoice one by one directly inside the viewmodel, for testing purposes) when I choose the XPS writer, bu fails to print correctly when printing to a real printer. I can see nothing of the data bound to the report. All the graphical elements such as lines are there, but no data. (When i print, with the same button, to de xps writer printer, all data is present, and correct...)

有什么想法吗?

    private void ExecutePrintCommand(object sender, ExecutedRoutedEventArgs args)
    {
        var invs = args.Parameter as IList<object>;
        using (CompuDataContext db = new CompuDataContext())
        {
            DataLoadOptions dl = new DataLoadOptions();
            dl.LoadWith<Invoice>(f => f.Invoicelines);
            db.LoadOptions = dl;

            ReportViewer viewer = new ReportViewer();
            PrintDialog dlg = new PrintDialog();
            if (dlg.ShowDialog() == true)
            {
                PrintQueue q = dlg.PrintQueue;
                foreach (var o in invs)
                {

                    InvoiceListDisplay inv = o as InvoiceListDisplay;
                    Invoice invoice = db.Invoices.Single(f => f.Id == inv.Id);

                    viewer.DataContext = new InvoicePrintViewModel(invoice);

                    XpsDocumentWriter xpsdw = PrintQueue.CreateXpsDocumentWriter(q);
                    xpsdw.Write(viewer.Document);
                }
            }
        }
    }

推荐答案

mmkay，所以我自己在这里找到了答案 :)

mmkay, so I found the answer myself here :)

这对我有帮助(有人知道背后的原因"是什么吗?错误?)

This helped me (Anybody an idea what the 'reason' behind is? Bug?)

PS:在流程文档中，我遇到了同样的问题，但无法在那里解决.有什么想法吗?

PS: In a flowdocument, i experience the same issue, and have not been able to resolve it there. Any ideas?

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