wpf - 打印 WPF DataGrid 内容

Question

如何打印 DataGrid 的内容。我查看了以下帖子 如何在 WPF 应用程序中生成 FlowDocument 的“打印预览”？它只生成网格的可见部分而不是可滚动部分。我需要预览有多个页面，我认为我应该使用 FlowDocument，但我不知道如何去做。任何想法，将不胜感激。

Answer 1

我前段时间遇到过这个问题。我编写了一个从 DataGrid生成System.Windows.Documents.Table的方法。由于XpsDocumentWriter ，我将它放在 FlowDocument 中并生成了一个固定的文档。然后，您将拥有可以在DocumentViewer中可视化的 DataGrid 的完整分页视图

Answer 2

使用它：它工作正常。

public class UIPrinter
{
    #region Properties

    public Int32 VerticalOffset { get; set; }
    public Int32 HorizontalOffset { get; set; }
    public String Title { get; set; }
    public UIElement Content { get; set; }

    #endregion

    #region Initialization

    public TimelinePrinter()
    {
        HorizontalOffset = 20;
        VerticalOffset = 20;
        Title = "Print " + DateTime.Now.ToMyStringWithTime();
    }

    #endregion

    #region Methods

    public Int32 Print()
    {
        var dlg = new PrintDialog();
        if (dlg.ShowDialog() == true)
        {
            //---FIRST PAGE---//
            // Size the Grid.
            Content.Measure(new Size(Double.PositiveInfinity,
                                     Double.PositiveInfinity));

            Size sizeGrid = Content.DesiredSize;

            //check the width
            if (sizeGrid.Width > dlg.PrintableAreaWidth)
            {
                MessageBoxResult result = MessageBox.Show(Properties.Resources.s_EN_Question_PrintWidth, "Print", MessageBoxButton.YesNo, MessageBoxImage.Question);
                if (result == MessageBoxResult.No)
                    throw new PrintAborted(Properties.Resources.s_EN_Info_PrintingAborted);
            }

            // Position of the grid 
            var ptGrid = new Point(HorizontalOffset, VerticalOffset);

            // Layout of the grid
            Content.Arrange(new Rect(ptGrid, sizeGrid));

            //print
            dlg.PrintVisual(Content, Title);

            //---MULTIPLE PAGES---//
            double diff;
            int i = 1;
            while ((diff = sizeGrid.Height - (dlg.PrintableAreaHeight - VerticalOffset*i)*i) > 0)
            {
                //Position of the grid 
                var ptSecondGrid = new Point(HorizontalOffset, -sizeGrid.Height + diff + VerticalOffset);

                // Layout of the grid
                Content.Arrange(new Rect(ptSecondGrid, sizeGrid));

                //print
                int k = i + 1;
                dlg.PrintVisual(Content, Title + " (Page " + k + ")");

                i++;
            }

            return i;
        }

        throw new PrintAborted(Properties.Resources.s_EN_Info_PrintingAborted);
    }

    #endregion
}

它使用选定的打印机在多个页面上打印 Datagrid 或任何其他控件...

用法：

        MessageBoxResult result = MessageBox.Show(Properties.Resources.s_EN_Question_Print, "Print", MessageBoxButton.YesNo, MessageBoxImage.Question);
        if (result == MessageBoxResult.Yes)
        {
            try
            {
                var border = VisualTreeHelper.GetChild(MyDataGrid, 0) as Decorator;
                if (border != null)
                {
                    var scrollViewer = border.Child as ScrollViewer;
                    if (scrollViewer != null)
                    {
                        scrollViewer.ScrollToTop();
                        scrollViewer.ScrollToLeftEnd();
                    }
                }

                Title = _initialTitle + " - " + Properties.Resources.s_EN_Info_Printing;

                var myPrinter = new UIPrinter{ Title = Title, Content = PrintGrid };
                int nbrOfPages = myPrinter.Print();

                Title = _initialTitle + " - " + Properties.Resources.s_EN_Info_PrintingDone + " (" + nbrOfPages + " Pages)";
            }
            catch (PrintAborted ex)
            {
                Title = _initialTitle + " - " + ex.Message;
            }
        }

编辑：我将我的 Datagrid 放在一个包含标题控件的简单网格上，以便在我的论文上有一个标题。