C# iTextSharp（将aspx页面转换为pdf）
我正在尝试为我的课程项目实施演示证书颁发。将aspx页面转换为pdf时，图像根本无法显示。此处使用的图像位于我自己的笔记本电脑中，与Certification.aspx文件位于同一文件夹中。在另一台笔记本电脑中，图像会显示一次，但图像不会再次显示。这是随机发生的 请帮忙 谢谢 这是Certification.aspx页面 此页面显示课程门户徽标，以图像和一行关于证书的文本形式显示C# iTextSharp（将aspx页面转换为pdf）,c#,asp.net,pdf,itextsharp,C#,Asp.net,Pdf,Itextsharp,我正在尝试为我的课程项目实施演示证书颁发。将aspx页面转换为pdf时，图像根本无法显示。此处使用的图像位于我自己的笔记本电脑中，与Certification.aspx文件位于同一文件夹中。在另一台笔记本电脑中，图像会显示一次，但图像不会再次显示。这是随机发生的 请帮忙 谢谢 这是Certification.aspx页面 此页面显示课程门户徽标，以图像和一行关于证书的文本形式显示 <%@ Page Language="C#" AutoEventWireup="true" CodeFile=
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Certification.aspx.cs" Inherits="Certification" EnableEventValidation="false" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<!-- <asp:Image ID="Image1" runat="server" Height="402px" ImageUrl="certi.png" Width="923px" /> -->
<br />
<br />
<br />
<asp:Panel ID="Panel1" runat="server" Height="120px">
<!-- <img src = "http://www.aspsnippets.com/images/Blue/Logo.png" /><br /> -->
<img src="E:\Pictures\1.jpg" height="402" width="923" alt="Image" /><br/>
<asp:Label ID="Label3" runat="server"></asp:Label>
<br />
<br />
<b><i>Has successfully completed the requirements to complete the course on</i></b>
<asp:Label ID="Label4" runat="server"></asp:Label>
<br />
<asp:Button ID="Button1" runat="server" Text="Click to download as PDF." OnClick="Button1_Click1" />
</asp:Panel>
</div>
</form>
点击上面的按钮，aspx页面将转换为pdf。我看到您正在使用
HTMLWorkerXMLWorkerPDFSharpusing System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using iTextSharp.text;
using iTextSharp.text.pdf;
using iTextSharp.text.html;
using iTextSharp.text.html.simpleparser;
using System.Drawing;
using System.IO;
public partial class Certification : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
string marks="",name="",course="";
int marks1=0;
string id = Session["email"].ToString();
SqlConnection conn = new SqlConnection(); //creating connection reference object
//conn.ConnectionString = @"Data Source=(LocalDB)\v11.0;AttachDbFilename=E:\My Documents\Final Year Project\finalyear\finalyear\App_Data\newdatabase.mdf;Integrated Security=True";
conn.ConnectionString = @"Data Source=(LocalDB)\v11.0;AttachDbFilename=E:\My Documents\Final Year Project\finalyear\finalyear\App_Data\newdatabase.mdf;Integrated Security=True";
conn.Open(); //opening connection
string q = "select * from selectcourse where selectcourse.s_emailid='" + id + "'";
SqlCommand cmd = new SqlCommand(q, conn);
//execute query
SqlDataReader reader = cmd.ExecuteReader();
if (reader.Read() == true)
{
marks = reader.GetValue(3).ToString();
marks1 = Convert.ToInt32(marks);
}
reader.Dispose();
cmd.Dispose();
string q1 = "select * from studentinfo where studentinfo.s_emailid='" + id + "'";
SqlCommand cmd1 = new SqlCommand(q1, conn);
//execute query
SqlDataReader reader1 = cmd1.ExecuteReader();
if (reader1.Read() == true)
{
name = reader1.GetValue(1).ToString();
}
course = Session["course"].ToString();
Label3.Text = name.ToString();
Label4.Text = course.ToString();
}
public override void VerifyRenderingInServerForm(Control control)
{
}
protected void Button1_Click1(object sender, EventArgs e)
{
string attachment = "attachment; filename=" + "abc" + ".pdf";
Response.ClearContent();
Response.AddHeader("content-disposition", attachment);
Response.ContentType = "application/pdf";
StringWriter s_tw = new StringWriter();
HtmlTextWriter h_textw = new HtmlTextWriter(s_tw);
h_textw.AddStyleAttribute("font-size", "7pt");
h_textw.AddStyleAttribute("color", "Black");
Panel1.RenderControl(h_textw);//Name of the Panel
Document doc = new Document();
doc = new Document(PageSize.A4, 5, 5, 15, 5);
FontFactory.GetFont("Verdana", 80);
PdfWriter.GetInstance(doc, Response.OutputStream);
doc.Open();
StringReader s_tr = new StringReader(s_tw.ToString());
HTMLWorker html_worker = new HTMLWorker(doc);
html_worker.Parse(s_tr);
/*var logo = iTextSharp.text.Image.GetInstance(Server.MapPath("certi.png"));
logo.SetAbsolutePosition(0, 0);
doc.Add(logo);*/
doc.Close();
Response.Write(doc);
}
}