PdfSharp 在矩形顶部书写文本

Question

我正在尝试制作一个包含数量和单位的产品清单。每隔一行应为浅灰色。

我目前在一个 for 循环中这样做，就像这样：

for (int i = 0; i < OrderList.Count; i++)
    {
        double lineY = lineHeight * (i + 1);
        if (i % 2 == 1)
        {
            XSolidBrush brush = new XSolidBrush(XColors.LightGray);

            graph.DrawRectangle(brush, marginLeft, lineY - 2, size.Width - marginLeft - marginRight, lineHeight - 2);

        }
        var state = graph.Save();

        graph.DrawString(
            OrderList[i].Product.Name,
            fontParagraph,
            XBrushes.Black,
            new XRect(nameX, marginTop + lineY, pdfPage.Width.Point, pdfPage.Height.Point),
            XStringFormats.TopLeft);

        graph.DrawString(
            OrderList[i].Quantity.ToString(),
            fontParagraph,
            XBrushes.Black,
            new XRect(quantityX, marginTop + lineY, pdfPage.Width.Point, pdfPage.Height.Point),
            XStringFormats.TopLeft);

        graph.DrawString(
            OrderList[i].Unit,
            fontParagraph,
            XBrushes.Black,
            new XRect(unitX, marginTop + lineY, pdfPage.Width.Point, pdfPage.Height.Point),
            XStringFormats.TopLeft);

        graph.Restore(state);
    }
pdf.Save("C:\Users\Tobias\Desktop\firstpage.pdf");

上面的代码是我从那里得到的 the linked forum post in the answer

然而，现在这行不通了。所有的灰色线条仍然隐藏着所有的文字。我有来自 NuGet (1.50.4619-beta4c) 的 PdfSharp 的最新预发布，即使答案说没有必要保存状态，但当我省略保存状态时它也不起作用。

Answer 1

我似乎无法重现您的问题。我还使用来自 NuGet (1.50.4619-beta4c) 的 PdfSharp。我创建了一个 WPF 测试程序，其中设置了 lineHeight、marginLeft 等：

public partial class MainWindow : Window
{
    private PdfDocument document;
    private double lineHeight = 20;
    private XFont fontParagraph = new XFont("Verdana", 12, XFontStyle.Regular);
    private int marginLeft = 20;
    private int marginRight = 20;
    private int marginTop = 20;
    private int nameX = 0;
    private int quantityX = 100;
    private int unitX = 200;
    private string filename = @"C:\Users\Christian\Desktop\Orders.pdf";
    XSolidBrush TextBackgroundBrush = new XSolidBrush(XColors.LightGray);

    public MainWindow()
    {
        InitializeComponent();
        document = new PdfDocument();
    }

    private void Button_Click(object sender, RoutedEventArgs e)
    {
        var OrderList = new List<Order>();
        OrderList.Add(new Order {
            Unit = "L",
            Quantity = 100,
            Product = new Product { Name = "Coca Cola" }
        });
        OrderList.Add(new Order
        {
            Unit = "L",
            Quantity = 50,
            Product = new Product { Name = "Coca Cola Zero" }
        });

        PdfPage pdfPage = document.AddPage();

        XGraphics graph = XGraphics.FromPdfPage(pdfPage);


        for (int i = 0; i < OrderList.Count; i++)
        {
            double lineY = lineHeight * (i + 1);
            if (i % 2 == 1)
            {
                graph.DrawRectangle(TextBackgroundBrush, marginLeft, lineY - 2 + marginTop, pdfPage.Width - marginLeft - marginRight, lineHeight - 2);
            }

            graph.DrawString(
                OrderList[i].Product.Name,
                fontParagraph,
                XBrushes.Black,
                new XRect(nameX + marginLeft, marginTop + lineY, pdfPage.Width.Point, pdfPage.Height.Point),
                XStringFormats.TopLeft);

            graph.DrawString(
                OrderList[i].Quantity.ToString(),
                fontParagraph,
                XBrushes.Black,
                new XRect(quantityX + marginLeft, marginTop + lineY, pdfPage.Width.Point, pdfPage.Height.Point),
                XStringFormats.TopLeft);

            graph.DrawString(
                OrderList[i].Unit,
                fontParagraph,
                XBrushes.Black,
                new XRect(unitX + marginLeft, marginTop + lineY, pdfPage.Width.Point, pdfPage.Height.Point),
                XStringFormats.TopLeft);

        }
        document.Save(filename);
        Process.Start(filename);
    }

    private class Order
    {
        public int Quantity { get; set; }
        public string Unit { get; set; }
        public Product Product { get; set; }
    }

    private class Product
    {
        public string Name { get; set; }
    }
}

我的主窗口XAML只是一个按钮：

<Button Width="100" Height="30" Click="Button_Click">Create PDF</Button>

然后我得到了我想要的 PDF PDF.

解决您的问题的最佳建议是试一试 lineHeight 等设置。

PdfSharp 在矩形顶部书写文本

PdfSharp Writing text on top of a rectangle

c#

wpf

pdfsharp