This is a migrated thread and some comments may be shown as answers.

html to pdf doesnt display

5 Answers 138 Views

Editor

This is a migrated thread and some comments may be shown as answers.

5 Answers, 1 is accepted

answered on 28 Jul 2011, 03:43 PM

Hi Menaga,

The problem occurs because of the <table> element that is added to the content. RadEditor is using third party tool to provide the HTML to PDF conversion and this tool requires table elements to have set width and to have <colgroup>. This is handled by the ExportToPdf filter along with other requirements of that tool, however, since you are dynamically setting the content server-side, content filters are not executed.

In order to dynamically wrap the content in table when exporting you need to modify the table declaration to match the following:

protected void btn_Click(object sender, ImageClickEventArgs e)

{

pdffile_dl.Content = "<table style=\"width:0px\"><colgroup><col /></colgroup><tr><td>" + aa + "</td></tr></table>";

pdffile_dl.ExportToPdf();

}

Please note that you need <col /> element for each column of the table.

Regards,
Dobromir
the Telerik team

Browse the vast support resources we have to jump start your development with RadControls for ASP.NET AJAX. See how to integrate our AJAX controls seamlessly in SharePoint 2007/2010 visiting our common SharePoint portal.

answered on 03 Aug 2011, 01:52 PM

Hi Menaga,

I tried to reproduce the problem but to no avail. Could you please provide more detailed information regarding specific scenario?

Which version of RadControls for ASP.NET AJAX and .NET Framework are used in the application?
Under which browser and its version the problem occurs?
Could you please provide a simple fully runnable project reproducing the problem so we can investigate it further?

All the best,
Dobromir
the Telerik team

answered on 04 Aug 2011, 10:34 AM

Hi
Im using RadControls for ASP.NET AJAX with version Q2011 and .NET3.5 .The problem occurs in Internet Explorer 8
table.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="table.aspx.cs" Inherits="table" %>

<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

<title></title>

</head>

<body>

<form id="form1" runat="server">

<div>

<telerik:radscriptmanager runat="server"></telerik:radscriptmanager>

<asp:Button ID="btn" runat="server" Text="click me to download pdf" onclick="btn_Click" />

<literal id="literal1" runat="server"></literal>

</div>

<telerik:radeditor id="radeditor1" runat="server" ContentFilters="PdfExportFilter, DefaultFilters"><ExportSettings OpenInNewWindow="true" ></ExportSettings>

<content>

</content>

</telerik:radeditor>

</form>

</body>

</html>

table.aspx.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.Adapters;

public partial class table : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

if (!IsPostBack)

{

string dynTable = "";

dynTable = "<table cellspacing=\"0\" cellpadding=\"2\" border=\"1\">";

for (int tRows = 0; tRows < 5; tRows++)

{

dynTable += "<tr>";

for (int tCols = 0; tCols < 4; tCols++)

{

dynTable += "<td>"; dynTable += "Row: " + (tRows + 1) + " Col: " + (tCols + 1);

dynTable += "</td>";

}

dynTable += "</tr>";

}

// close the table tag

dynTable += "</table>";

radeditor1.Content = dynTable;

}

protected void btn_Click(object sender, EventArgs e)

{

radeditor1.ExportToPdf();

}

thanks in advance

answered on 08 Aug 2011, 02:54 PM

Hi Menaga,

The generated table is not with the correct formatting. To be able to export <table> to PDF it should to meet the following requirements:

A width should be set to the table as a style rule, e.g.:

<table style="width:0px">
The table should contain a column declaration - <colgroup> inner tag, e.g.:

<table style="width:0px">

    <colgroup>

        <col />

        <col />

        <col />

        <col />

    </colgroup>

......

Greetings,
Dobromir
the Telerik team