c# - 在 Migradoc 中添加最后 3 行之前检查是否接近页尾

Question

我是第一次使用 MigraDoc 库，需要帮助。我正在使用 MigraDoc 打印 pdf 表格。在我的表中，3 行组成一个组。所以每 3 行组必须在同一页上，但在我当前的代码中，这不会发生。

它将在同一页上打印第 1 行或第 2 行，如果页面结束，则第 3 行进入下一页。

public void CreateDocument()
{
this.document = new Document { Info = { Title = "Time Sheet Report By Job", } };
this.DefineStyles();
this.CreatePage();
this.FillContent();
}

public void FillContent()
{
    int x = 1;
    foreach (XElement r in this.xReport.Element(ElrepTable).Elements(ElrepRow))
    {
        Row row1 = this.table.AddRow();
        int i = 0;
        row1.Cells[0].Borders.Visible = false;
        foreach (XElement c in r.Elements(ElrepCell))
        {
            row1.Cells[i++].AddParagraph(c.Value);
        }

        if (x++ % 3 != 0)
        {
            continue;
        }

        row1.Borders.Bottom.Width = 1;
        row1.Cells[0].Borders.Bottom.Visible = true;
        row1.Cells[0].Borders.Bottom.Width = 1;
    }

    int colCount = this.GetColCount();
    int rowCount = this.GetRowCount();

    this.table.SetEdge(1, 1, colCount - 1, rowCount - 1, Edge.Box, BorderStyle.Single, 0.05);
}


private void CreatePage()
{
    Section section = this.document.AddSection();
    section.PageSetup.LeftMargin = "1cm";
    section.PageSetup.RightMargin = "1cm";
    section.PageSetup.BottomMargin = "2cm";
    section.PageSetup.TopMargin = "4.5cm";

    // Put a logo in the header
    string imgPath = this.SaveImg(Resource1.MMS_Logo, "logo");
    Image image = section.Headers.Primary.AddImage(imgPath);
    image.Height = "2cm";
    image.LockAspectRatio = true;
    image.RelativeVertical = RelativeVertical.Line;
    image.RelativeHorizontal = RelativeHorizontal.Margin;
    image.Top = ShapePosition.Top;
    image.Left = ShapePosition.Center;
    image.WrapFormat.Style = WrapStyle.Through;

    imgPath = this.SaveImg(Resource1.shadow, "shadow");
    Image image2 = section.Headers.Primary.AddImage(imgPath); // .Headers.Primary
    image2.Height = "1.5cm";
    image2.Width = "5cm";
    image2.RelativeVertical = RelativeVertical.Line;
    image2.RelativeHorizontal = RelativeHorizontal.Margin;
    image2.Top = ShapePosition.Top;
    image2.Left = ShapePosition.Right;
    image2.WrapFormat.Style = WrapStyle.Through;

    this.leftTextFrame = section.Headers.Primary.AddTextFrame();
    this.leftTextFrame.Height = "10.0cm";
    this.leftTextFrame.Width = "7.0cm";
    this.leftTextFrame.RelativeHorizontal = RelativeHorizontal.Margin;
    this.leftTextFrame.RelativeVertical = RelativeVertical.Page;
    this.leftTextFrame.Left = ShapePosition.Left;
    this.leftTextFrame.Top = "1.75cm";

    this.centerTextFrame = section.Headers.Primary.AddTextFrame();
    this.centerTextFrame.Height = "5.0cm";
    this.centerTextFrame.Width = "6.0cm";
    this.centerTextFrame.RelativeHorizontal = RelativeHorizontal.Margin;
    this.centerTextFrame.RelativeVertical = RelativeVertical.Page;
    this.centerTextFrame.Left = ShapePosition.Center;
    this.centerTextFrame.Top = "3.5cm";

    this.rightTextFrame = section.Headers.Primary.AddTextFrame();
    this.rightTextFrame.Height = "3.0cm";
    this.rightTextFrame.Width = "5.0cm";
    this.rightTextFrame.RelativeHorizontal = RelativeHorizontal.Margin;
    this.rightTextFrame.RelativeVertical = RelativeVertical.Page;
    this.rightTextFrame.Left = ShapePosition.Right;
    this.rightTextFrame.Top = "1.75cm";

    Dictionary<string, string> jobdet = this.GetJobDetails();

    // Put sender in address frame
    Paragraph p1 = this.leftTextFrame.AddParagraph();
    var f = new Font { Bold = true, Size = 8 };
    p1.AddFormattedText(this.GetTitle(), f);
    p1.AddLineBreak();
    p1.AddLineBreak();
    p1.AddFormattedText("Account Information", new Font { Bold = true, Italic = true, Size = 7 });
    p1.AddLineBreak();

    Paragraph p2 = this.leftTextFrame.AddParagraph();
    p2.Format.LeftIndent = "2cm";

    p2.AddFormattedText("Job #:", new Font { Bold = true, Size = 6 });
    p2.AddTab();
    p1.AddTab();
    p2.AddFormattedText(this.GetJobNo(), new Font { Size = 6 });
    p2.AddLineBreak();

    p2.AddFormattedText("Job Name:", new Font { Bold = true, Size = 6 });
    p2.AddTab();
    p2.AddFormattedText(jobdet["Name"], new Font { Size = 6 });
    p2.AddLineBreak();

    p2.AddFormattedText("Address:", new Font { Bold = true, Size = 6 });
    p2.AddTab();
    p2.AddFormattedText(jobdet["Address"], new Font { Size = 6 });
    p2.AddLineBreak();

    Paragraph cp1 = this.centerTextFrame.AddParagraph();
    cp1.AddFormattedText("Supervisor:", new Font { Bold = true, Size = 6 });
    cp1.AddTab();
    cp1.AddFormattedText(jobdet["Supervisor"], new Font { Size = 6 });

    cp1.AddLineBreak();
    cp1.AddLineBreak();

    cp1.AddFormattedText("Location:", new Font { Bold = true, Size = 6 });
    cp1.AddTab();
    cp1.AddTab();
    cp1.AddFormattedText(jobdet["Location"], new Font { Size = 6 });

    Paragraph rp1 = this.rightTextFrame.AddParagraph();
    rp1.Format.Alignment = ParagraphAlignment.Center;
    rp1.AddFormattedText("Timesheet by Job", new Font { Bold = true, Size = 9 });
    rp1.AddLineBreak();
    rp1.AddFormattedText("Pay Period End " + this.GetEdate(), new Font { Bold = true, Size = 8 });
    rp1.AddLineBreak();
    rp1.AddLineBreak();

    rp1.AddFormattedText(this.GetOnDate(), new Font { Size = 6 });
    rp1.AddTab();
    FormattedText ft = rp1.AddFormattedText("Page ", new Font { Bold = true, Size = 7 });
    ft.AddPageField();
    ft.Font.Size = 7;
    ft.Font.Bold = true;
    ft = rp1.AddFormattedText(" of ", new Font { Bold = true, Size = 7 });
    ft.AddNumPagesField();
    ft.Font.Size = 7;
    ft.Font.Bold = true;

    section.AddParagraph();

    cp1.AddLineBreak();
    cp1.AddLineBreak();
    this.table = section.AddTable();

    this.table.Style = "Table";
    this.table.Borders.Color = Color.Parse("Black");
    this.table.Rows.LeftIndent = 0;

    int cols = this.GetColCount();
    Column column = this.table.AddColumn("4cm");
    column.Format.Alignment = ParagraphAlignment.Left;

    column = this.table.AddColumn("0.6cm");
    column.Format.Alignment = ParagraphAlignment.Left;

    for (int i = 2; i < cols; i++)
    {
        column = this.table.AddColumn("0.85cm");
        column.Format.Alignment = ParagraphAlignment.Left;
    }

    // Create the header of the table
    Row row = this.table.AddRow();
    row.HeadingFormat = true;
    row.Format.Alignment = ParagraphAlignment.Center;
    row.Format.Font.Bold = true;
    row.Cells[0].Borders.Top.Visible = false;
    row.Cells[0].Borders.Left.Visible = false;
    row.Cells[0].Borders.Right.Visible = false;
    row.Cells[1].Borders.Top.Visible = false;
    row.Cells[1].Borders.Left.Visible = false;
    string[] colNames = this.GetColNames();
    for (int i = 0; i < cols; i++)
    {
        row.Cells[i].AddParagraph(colNames[i]);
        row.Cells[i].Format.Font.Bold = false;
        row.Cells[i].Format.Alignment = ParagraphAlignment.Left;
        row.Cells[i].VerticalAlignment = VerticalAlignment.Center;
        row.Cells[i].Borders.Width = 1.5;
    }
}

我不知道 MigraDoc 是否有某些功能可以直接执行此类操作。否则我想知道页面是否会在 3 行之间中断，如果是，我将不得不自己进行分页。

任何伪代码片段都会很有帮助。

Answer 1

对于每组的第一行，设置 row1.KeepWith = 2 以将三行放在一个组中。