Question

我正在尝试使用Flow Document打印一些段落和图像，如下面的代码所示

Paragraph invoiceID = new Paragraph(new Run("Invoice No : "+ txtInvoiceID.Text));
Paragraph qty001 = new Paragraph(new Run("Quantity : " + qtyText.Text));
Paragraph date001 = new Paragraph(new Run("Date : " +txtInvoiceDate.Text));

Section sec = new Section();
sec.Blocks.Add(invoiceID);
sec.Blocks.Add(qty001);
sec.Blocks.Add(date001);

FlowDocument fd = new FlowDocument();
PrintDialog pd = new PrintDialog();

fd.PageHeight = pd.PrintableAreaHeight;
fd.PageWidth = pd.PrintableAreaWidth;
fd.PagePadding = new Thickness(50);
fd.ColumnWidth = pd.PrintableAreaWidth;
fd.Blocks.Add(sec);
fd.Blocks.Add(new BlockUIContainer(barCodeImage));

IDocumentPaginatorSource dps = fd;
pd.PrintDocument(dps.DocumentPaginator,"Desciption");

我知道图像被进程锁定但我如何解锁此图像？

请帮助

由于

Jazaib

Answer 1

在WPF中，每个控件只能有一个父级，因为你已经在xaml中定义了barCodeImage，它是某个容器的子级。所以你可以从容器中删除它或克隆图像

System.InvalidOperationException：特定元素已经是另一个元素的逻辑子元素。先断开连接

1 个答案: