Question

I’m trying to print a WPF FlowDocument. The layout needs to be in the form of 4 documents per page, laid out as follows:

 Doc1 | Doc2
-------------
 Doc3 | Doc4

(Sorry, I couldn’t come up with a better way of illustrating the layout).

The page needs to fill, so if Doc1 & 2 are blank or just one or two characters, it still needs to print them the same size as Doc3 & 4.

The code I’m using is as follows (sorry it’s long, I’ve tried to abridge where feasible):

PrintDialog printDialog = new PrintDialog();
if ((bool)printDialog.ShowDialog().GetValueOrDefault())
{
    FlowDocument flowDocument = new FlowDocument();
    flowDocument.PageHeight = printDialog.PrintableAreaHeight;
    flowDocument.PageWidth = printDialog.PrintableAreaWidth;
    flowDocument.PagePadding = new Thickness(25);

    flowDocument.ColumnGap = 0;

    flowDocument.ColumnWidth = (flowDocument.PageWidth -
                                   flowDocument.ColumnGap -
                                   flowDocument.PagePadding.Left -
                                   flowDocument.PagePadding.Right);


    Table myTable = new Table();
    myTable.BorderThickness = new Thickness(3);

    AddCols(myTable);         // Add 2 cols

    TableRowGroup rg = new TableRowGroup();
    TableRow row = new TableRow();

    AddRows(myTable);         // Adds 2 rows

    TableCell cell = new TableCell(new Paragraph(new Run("Doc1")));                
    cell.BorderThickness = new Thickness(1);
    cell.BorderBrush = Brushes.Black;          
    // Repeat 4 times      

    row.Cells.Add(cell);

    myTable.RowGroups.Add(rg);

    doc.Blocks.Add(myTable);

    ....

The problem that I have is that although this does print, it doesn’t try to fit it to the page as described above. Is what I am attempting possible and if so, how?

EDIT:

From looking here I believe what I actually need is a way to calculate the height of the paragraph, so that I can set the Padding property. Unfortunately the solution proposed in this link doesn’t work!

Answer 1

Try placing the entire block in a grid so as to give it the uniform layout and then place the grid in the block and block inside your single table cell. See if this works for you –

Grid grid = new Grid();
        grid.RowDefinitions.Add(new RowDefinition());
        grid.RowDefinitions.Add(new RowDefinition());
        grid.ColumnDefinitions.Add(new ColumnDefinition());
        grid.ColumnDefinitions.Add(new ColumnDefinition());

        Label text1 = new Label();
        text1.Content = "Doc1";
        grid.Children.Add(text1);
        Grid.SetColumn(text1, 0);
        Grid.SetRow(text1, 0);

        Label text2 = new Label();
        text1.Content = "Doc2";
        grid.Children.Add(text2);
        Grid.SetColumn(text2, 1);
        Grid.SetRow(text2, 0);

        Label text3 = new Label();
        text1.Content = "Doc3";
        grid.Children.Add(text3);
        Grid.SetColumn(text3, 0);
        Grid.SetRow(text3, 1);

        Label text4 = new Label();
        text1.Content = "Doc4";
        grid.Children.Add(text4);
        Grid.SetColumn(text4, 1);
        Grid.SetRow(text4, 1);

        BlockUIContainer block = new BlockUIContainer(grid);

        Table table = new Table();
        TableRowGroup rg = new TableRowGroup();
        TableCell cell = new TableCell();
        cell.Blocks.Add(block);
        TableRow row = new TableRow();
        row.Cells.Add(cell);
        rg.Rows.Add(row);
        table.RowGroups.Add(rg);
        doc.Blocks.Add(table);