asp.net-mvc - 使用 ASP.net、C#、MVC 在模板中生成 pdf

Question

我是 MVC 的初学者，需要在提供的模板上生成 PDF 发票。在进行了一些谷歌搜索之后，现在我可以生成 pdf 但不能在模板中生成。任何机构都可以帮助我解决这个问题。我在下面写我的代码:

public ActionResult pdfStatement(string InvoiceNumber)
{
    InvoiceNumber = InvoiceNumber.Trim();
    ObjectParameter[] parameters = new ObjectParameter[1];
    parameters[0] = new ObjectParameter("InvoiceNumber", InvoiceNumber);
    var statementResult = _db.ExecuteFunction<Models.Statement>("uspInvoiceStatement", parameters);
    Models.Statement statement = statementResult.SingleOrDefault();

    return ViewPdf("Invoice", "pdfStatement", statement);
}

---

public class PdfViewController : Controller
{
    private readonly HtmlViewRenderer htmlViewRenderer;
    private readonly StandardPdfRenderer standardPdfRenderer;

    public PdfViewController()
    {
        this.htmlViewRenderer = new HtmlViewRenderer();
        this.standardPdfRenderer = new StandardPdfRenderer();
    }

    protected ActionResult ViewPdf(string pageTitle, string viewName, object model)
    {
        // Render the view html to a string.
        string htmlText = this.htmlViewRenderer.RenderViewToString(this, viewName, model);
        // Let the html be rendered into a PDF document through iTextSharp.
        byte[] buffer = standardPdfRenderer.Render(htmlText, pageTitle);

        // Return the PDF as a binary stream to the client.
        return new BinaryContentResult(buffer, "application/pdf");
    }
}

---

public class BinaryContentResult : ActionResult
{
    private readonly string contentType;
    private readonly byte[] contentBytes;

    public BinaryContentResult(byte[] contentBytes, string contentType)
    {
        this.contentBytes = contentBytes;
        this.contentType = contentType;
    }

    public override void ExecuteResult(ControllerContext context)
    {
        var response = context.HttpContext.Response;
        response.Clear();
        response.Cache.SetCacheability(HttpCacheability.Public);
        response.ContentType = this.contentType;

        using (var stream = new MemoryStream(this.contentBytes))
        {
            stream.WriteTo(response.OutputStream);
            stream.Flush();
        }
    }
}

Answer 1

我会推荐 iTextSharp图书馆。

看看这个 tutorial on how to populate a pdf 来自 c# 使用该库。在 Adob​​e Acrobat 中创建包含字段的 pdf，然后使用代码填充字段。

// Open the template pdf
PdfReader pdfReader = new PdfReader(Request.MapPath("~/assets/form.pdf")); 
PdfStamper pdfStamper = new PdfStamper(pdfReader, Response.OutputStream);
pdfStamper.FormFlattening = true; // generate a flat PDF 

// Populate the fields
AcroFields pdfForm = pdfStamper.AcroFields;
pdfForm.SetField("InvoiceRef", "00000");
pdfForm.SetField("DeliveryAddress", "Oxford Street, London");
pdfForm.SetField("Email", "anon@anywhere.com");
pdfStamper.Close();