C# WPF PrintDialog 打印（3）

前面https://www.cnblogs.com/yinyu5/p/18634080使用PrintDocument方法打印了Canvas，这里打印下面的DataGrid列表内容：

这里DataGrid的数据源是DataTable，后台代码：

private void PrintDocument_DataTable_Method(string Title, DataTable dataTable)
        {
            PrintDialog printDialog = new PrintDialog();
            printDialog.PrintQueue = LocalPrintServer.GetDefaultPrintQueue();
            printDialog.PageRangeSelection = PageRangeSelection.AllPages;

            if (printDialog.ShowDialog() == true)
            {
                FixedDocument fixedDoc = new FixedDocument();
                Size pageSize = new Size(printDialog.PrintableAreaWidth, printDialog.PrintableAreaHeight);
                double offsetLeft = 20;
                double titleHeight = 30;
                double titleMargin = 5;
                double rectHeight = 5;
                double rectMargin = 5;
                double rowHeight = 20;
                double columnHeight = 18;
                double columnBorderThickness = 1;
                double cellThickness = 1;
                int cellWidth = 100;
                BrushConverter brushConverter = new BrushConverter();
                Brush columnBackgrouneBrush = (Brush)brushConverter.ConvertFromString("#D3DBDE");
                Brush borderBrush = (Brush)brushConverter.ConvertFromString("#8BA2AF");
                int totalRows = dataTable.Rows.Count;
                int totalColumns = dataTable.Columns.Count;
                //计算页数
                int rowsPerPage = (int)((pageSize.Height - offsetLeft - (titleHeight + 2 * titleMargin) - (rectHeight + rectMargin * 2) - (columnHeight + 2 * columnBorderThickness))
                    / (rowHeight + 2 * cellThickness));
                int totalPages = (totalRows + rowsPerPage - 1) / rowsPerPage;

                for (int pageIndex = 0; pageIndex < totalPages; pageIndex++)
                {
                    PageContent pageContent = new PageContent();
                    FixedPage fixedPage = new FixedPage();
                    fixedPage.Width = pageSize.Width;
                    fixedPage.Height = pageSize.Height;
                    //总布局
                    StackPanel stackPanel_Total = new StackPanel();
                    stackPanel_Total.Orientation = Orientation.Vertical;
                    stackPanel_Total.Width = pageSize.Width;
                    // 添加标题
                    TextBlock title = new TextBlock
                    {
                        Text = Title,
                        FontSize = titleHeight,
                        FontWeight = FontWeights.Bold,
                        Margin = new Thickness(titleMargin),
                        HorizontalAlignment = HorizontalAlignment.Center
                    };
                    stackPanel_Total.Children.Add(title);
                    //添加长方形横杠
                    Rectangle rectangle = new Rectangle
                    {
                        Height = rectHeight,
                        Fill = System.Windows.Media.Brushes.Black,
                        Margin = new Thickness(rectMargin)
                    };
                    stackPanel_Total.Children.Add(rectangle);
                    // 添加列名
                    StackPanel stackPanel = new StackPanel();
                    stackPanel.Orientation = Orientation.Horizontal;
                    stackPanel.Margin = new Thickness(offsetLeft, 0, 0, 0);
                    for (int i = 0; i < totalColumns; i++)
                    {
                        TextBlock columnName = new TextBlock
                        {
                            Text = dataTable.Columns[i].ColumnName,
                            Foreground = System.Windows.Media.Brushes.Black,
                            FontWeight = FontWeights.Bold,
                            FontSize = columnHeight,
                            Width = cellWidth,
                            TextWrapping = TextWrapping.Wrap
                        };
                        Border border = new Border
                        {
                            BorderBrush = borderBrush,
                            Background = columnBackgrouneBrush,
                            BorderThickness = new Thickness(columnBorderThickness, columnBorderThickness, columnBorderThickness, columnBorderThickness)
                        };
                        border.Child = columnName;
                        stackPanel.Children.Add(border);
                    }
                    stackPanel_Total.Children.Add(stackPanel);
                    //添加DataTable的行内容
                    StackPanel stackPanel_Ver = new StackPanel();
                    stackPanel_Ver.Orientation = Orientation.Vertical;
                    stackPanel_Ver.Margin = new Thickness(offsetLeft, 0, 0, 0);
                    for (int rowIndex = pageIndex * rowsPerPage; rowIndex < (pageIndex + 1) * rowsPerPage && rowIndex < totalRows; rowIndex++)
                    {
                        StackPanel stackPanel_Hor = new StackPanel();
                        stackPanel_Hor.Orientation = Orientation.Horizontal;
                        for (int i = 0; i < totalColumns; i++)
                        {
                            TextBlock columnCell = new TextBlock
                            {
                                Text = dataTable.Rows[rowIndex][i].ToString(),
                                FontSize = 15,
                                Width = cellWidth,
                                TextWrapping = TextWrapping.Wrap
                            };
                            Border columnCell_Border = new Border
                            {
                                BorderBrush = borderBrush,
                                BorderThickness = new Thickness(columnBorderThickness, columnBorderThickness, columnBorderThickness, columnBorderThickness)
                            };
                            columnCell_Border.Child = columnCell;
                            stackPanel_Hor.Children.Add(columnCell_Border);
                        }
                        stackPanel_Ver.Children.Add(stackPanel_Hor);
                    }
                    stackPanel_Total.Children.Add(stackPanel_Ver);
                    fixedPage.Children.Add(stackPanel_Total);
                    ((IAddChild)pageContent).AddChild(fixedPage);
                    fixedDoc.Pages.Add(pageContent);
                }
                // 开始打印
                printDialog.PrintDocument(fixedDoc.DocumentPaginator, "打印 DataGrid");
            }
        }

打印出来的PDF文件效果如下：

 这里使用了StackPanel和Border组合简单实现了类似于表格的样式，个人可根据实际的需要进行布局调整。