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我正在使用它將html轉換爲pdf,但它什麼都不做。沒有錯誤或例外。我調試過,它有html內容,甚至在頁面上顯示,但不下載。我將HTML內容從數據庫加載到隱藏字段中,並從後端分配給文字控件,並且我檢查它是否顯示值。爲什麼不能將我的頁面轉換爲pdf?
代碼:
private MemoryStream Export(string html="")
{
ltr.Text = hdnDescription.Value;
html = ltr.Text;
MemoryStream msOutput = new MemoryStream();
TextReader reader = new StringReader(html);
// step 1: creation of a document-object
Document document = new Document(PageSize.A4, 30, 30, 30, 30);
// step 2:
// we create a writer that listens to the document
// and directs a XML-stream to a file
PdfWriter writer = PdfWriter.GetInstance(document, msOutput);
// step 3: we create a worker parse the document
HTMLWorker worker = new HTMLWorker(document);
// step 4: we open document and start the worker on the document
document.Open();
worker.StartDocument();
// step 5: parse the html into the document
worker.Parse(reader);
// step 6: close the document and the worker
worker.EndDocument();
worker.Close();
document.Close();
return msOutput;
}
的.aspx:
<%@ Page Title="Print Tender" EnableEventValidation="false" Language="C#"
MasterPageFile="~/Default.master" AutoEventWireup="true" CodeFile="printTender.aspx.cs"
Inherits="forms_general_printTender" %>
<%--<%@ Register Assembly="Microsoft.ReportViewer.WebForms, Version=12.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91" Namespace="Microsoft.Reporting.WebForms" TagPrefix="rsweb" %>--%>
<%@ Register Assembly="Microsoft.ReportViewer.WebForms, Version=11.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91" Namespace="Microsoft.Reporting.WebForms" TagPrefix="rsweb" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder2" runat="Server">
<asp:HiddenField ID="hdnDescription" runat="server" />
<asp:Literal ID="ltr" runat="server"></asp:Literal>
<rsweb:ReportViewer ID="ReportViewer1" AsyncRendering="false" runat="server" Width="100%" Height="50%" Font-Names="Verdana" SizeToReportContent="false" Font-Size="8pt" WaitMessageFont-Names="Verdana" WaitMessageFont-Size="14pt" />
</asp:Content>
<asp:Content ID="Content3" ContentPlaceHolderID="ContentScript" runat="Server">
</asp:Content>