Question

我有MVC应用程序，我可以打电话并在PDF上打印一条记录。我现在需要做的是将模型中的所有记录打印成PDF文件，每页一个记录。我的记录正在通过HTML视图和Razor引擎进行格式化。我该如何做到这一点？

这是我实际创建PDF的代码 -

private void CreatePDF(string HTMLData, string fileName)
{
    StringReader reader = new StringReader(HTMLData);

    //Create PDF document 
    Document doc = new Document(PageSize.A4, 36, 36, 36, 36);
    HTMLWorker parser = new HTMLWorker(doc);

    StyleSheet styles = new StyleSheet();
    styles.LoadTagStyle(HtmlTags.TABLE, HtmlTags.SIZE, "6pt");
    styles.LoadTagStyle(HtmlTags.H3, HtmlTags.SIZE, "10pt");
    styles.LoadTagStyle(HtmlTags.H5, HtmlTags.SIZE, "6pt");

    parser.SetStyleSheet(styles);

    PdfWriter.GetInstance(doc, new FileStream(fileName, FileMode.Create));
    doc.Open();
    try
    {
        //Parse Html and dump the result in PDF file
        parser.Parse(reader);
    }
    catch (Exception ex)
    {
        //Display parser errors in PDF. 
        Paragraph paragraph = new Paragraph("Error!" + ex.Message);
        Chunk text = paragraph.Chunks[0] as Chunk;
        if (text != null)
        {
            text.Font.Color = BaseColor.RED;
        }
        doc.Add(paragraph);
    }
    finally
    {
        doc.Close();
    }
}

这是一个调用函数，它生成一个带有一条记录的PDF -

    var oOrder = _unitOfWork.OrderRepository.Get.Where(m => m.Id == id).FirstOrDefault();

    if (oOrder != null)
    {
        OrderViewModel vm = new OrderViewModel() { Order = oOrder, Customer = _unitOfWork.CustomerRepository.Find(oOrder.CustomerId) };
        GetEntityViewModelLists(vm);
        string receipt = RenderRazorViewToString(ControllerContext, "_Receipt", vm);

        var fileName = "Order Receipt_" + oOrder.Id + ".pdf";
        var filepath = System.IO.Path.GetTempPath();
        var filePath = filepath + fileName;

        CreatePDF(receipt, filePath);

        return new FileStreamResult(new FileStream(filePath, FileMode.Open, FileAccess.Read), "application/pdf");

Answer 1

最简单的改变可能是将CreatePDF()的第一个参数从字符串更改为字符串集合，然后将其循环。（我没有测试过这段代码，但它应该非常准确。）

private void CreatePDF(IList<string> HTMLData, string fileName) {
    //Create PDF document 
    Document doc = new Document(PageSize.A4, 36, 36, 36, 36);
    HTMLWorker parser = new HTMLWorker(doc);

    StyleSheet styles = new StyleSheet();
    styles.LoadTagStyle(HtmlTags.TABLE, HtmlTags.SIZE, "6pt");
    styles.LoadTagStyle(HtmlTags.H3, HtmlTags.SIZE, "10pt");
    styles.LoadTagStyle(HtmlTags.H5, HtmlTags.SIZE, "6pt");

    parser.SetStyleSheet(styles);

    PdfWriter.GetInstance(doc, new FileStream(fileName, FileMode.Create));
    doc.Open();

    //Try/Catch removed
    foreach (var s in HTMLData) {
        StringReader reader = new StringReader(s);
        parser.Parse(reader);
        doc.NewPage();
    }

    doc.Close();
}

如果您不想更改其他来电者，也可以选择重载原始方法。

private void CreatePDF(string HTMLData, string fileName) {
    CreatePDF(new string[] { HTMLData }, fileName);
}

然后，不是获得单个订单，而是获得所有这些订单并循环遍历那些

//I just made up a method but use whatever returns all of them
var oOrders = _unitOfWork.OrderRepository.GetAll();

//Create our collection of receipts
var receipts = new List<string>();
foreach (var oOrder in oOrders) {
    OrderViewModel vm = new OrderViewModel() { Order = oOrder, Customer = _unitOfWork.CustomerRepository.Find(oOrder.CustomerId) };
    GetEntityViewModelLists(vm);
    receipts.Add(RenderRazorViewToString(ControllerContext, "_Receipt", vm));
}

CreatePDF(receipts, filePath);

iTextSharp打印多个页面

1 个答案: