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Problem with RadRichTextBox with HTMLFormatProvider

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RichTextBox

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

Ran asked on 03 Apr 2013, 12:16 PM

compare.png

Hi,

I need to display a string which contains HTML as an html page.

I'm using this xaml:
<telerik:RadRichTextBox
x:Name="radRichTextBox"
IsSpellCheckingEnabled="False" />

and this code:

this.radRichTextBox.Document = LoadHtmlFile(sContent);

public static RadDocument LoadHtmlFile(string content)
{
HtmlFormatProvider provider = new HtmlFormatProvider();
return provider.Import(content);
}

the content string contains the following:
"<HTML>\r\n<HEAD>\r\n<STYLE TYPE=\"text/css\"> \r\n \r\n</STYLE> \r\n\r\n<TITLE>\r\nTextCompare:: c:\\testdata\\20newstxt\\Atheism\\alt.atheism\\51123.TXT VS c:\\testdata\\20newstxt\\Atheism\\alt.atheism\\51127.TXT\r\n</TITLE>\r\n<script type=\"text/javascript\">\r\n\r\n</script>\r\n\r\n</HEAD>\r\n<BODY onLoad='Loading()'>\r\n\r\n<TABLE>\r\n<TR><TD>Base </TD><TD><A HREF=\"c:\\testdata\\20newstxt\\Atheism\\alt.atheism\\51123.TXT\">c:\\testdata\\20newstxt\\Atheism\\alt.atheism\\51123.TXT</A></TD></TR>\r\n<TR><TD>Modified</TD><TD><A HREF=\"c:\\testdata\\20newstxt\\Atheism\\alt.atheism\\51127.TXT\">c:\\testdata\\20newstxt\\Atheism\\alt.atheism\\51127.TXT</A></TD></TR>\r\n</TABLE>\r\n\r\n<HR>\r\n\r\n\r\nFrom: keith@cco.caltech.edu (Keith Allan Schneider) \r\n \r\nSubject: Re: <IMG src=\"flag1.jpg\" name=\"C211\" alt=\"Flag\"/>\r\nPolitical Atheists? >>>>>>Pompous ass \r\n \r\nOrganization: California Institute of Technology, Pasadena \r\n \r\nLines: <IMG src=\"flag1.jpg\" name=\"C212\" alt=\"Flag\"/>\r\n11 14 \r\n \r\nNNTP-Posting-Host: punisher.caltech.edu <IMG src=\"flag1.jpg\" name=\"C213\" alt=\"Flag\"/>\r\n\r\n\r\narromdee@jyusenkyou.cs.jhu.edu (Ken Arromdee) \r\n\r\nlivesey@solntze.wpd.sgi.com (Jon Livesey) writes: <IMG src=\"flag1.jpg\" name=\"C214\" alt=\"Flag\"/>\r\n\r\n\r\n>>The motto originated in \r\n\r\n>>>How long does it [the motto] have to stay around before it becomes the <IMG src=\"flag1.jpg\" name=\"C215\" alt=\"Flag\"/>\r\nStar-Spangled Banner. Tell me \r\n\r\n>>>default? ... Where's the cutoff point? \r\n\r\n>>I don't know where the exact cutoff is, but it is at least after a few \r\n\r\n>>years, and surely after 40 years. \r\n\r\n>Why does the notion of default not take into account changes \r\n\r\n>in population makeup? \r\n\r\nSpecifically, which changes are you talking about? Are you arguing that <IMG src=\"flag1.jpg\" name=\"C216\" alt=\"Flag\"/>\r\nthis has \r\n\r\n>>something to do with atheists. \r\n\r\n>The the motto <IMG src=\"flag1.jpg\" name=\"C217\" alt=\"Flag\"/>\r\n_on_coins_ originated is interpreted as <IMG src=\"flag1.jpg\" name=\"C218\" alt=\"Flag\"/>\r\noffensive by a <IMG src=\"flag1.jpg\" name=\"C219\" alt=\"Flag\"/>\r\nMcCarthyite smear which equated atheism \r\n\r\n>with Communism and called both unamerican. \r\n\r\nNo it didn't. The motto has been on various coins since larger portion of the <IMG src=\"flag1.jpg\" name=\"C220\" alt=\"Flag\"/>\r\nCivil War. \r\n\r\nIt was just required to be on *all* currency in the 50's. \r\n\r\npopulation now than 40 years ago? \r\n \r\nkeith \r\n\r\n\r\n\r\n<HR>\r\n\r\n\r\nDocument comparison created by Equivio>Compare, a product of <a href=\"http://www.equivio.com\">Equivio</a>\r\n\r\n\r\n</BODY>\r\n</HTML>"

The displayed result is a blank page.

What am I doing wrong here?

8 Answers, 1 is accepted

answered on 03 Apr 2013, 02:54 PM

Hello Ran,

The main problem with the document is that all element names are in capital letters. This is valid HTML, but not XHTML. HtmlFormatProvider expects valid XHTML content, that is why the import sometimes fails when the element names are in capital letters. In the case of your document, it would be enough to substitute all occurrences of "STYLE" with "style".

Once imported, you can see some differences between the way the document looks in the editor and in a browser. They are mainly due to the fact that most paragraph tags are embedded in span elements, but paragraphs are block elements and spans are inlines, so it must be the other way around.

I hope this answers your question.

Regards,
Iva Toteva
the Telerik team

Explore the entire Telerik portfolio by downloading Telerik DevCraft Ultimate.

answered on 04 Apr 2013, 01:26 PM

expected.png

nocolors.png

Hi Iva,

The html is now displayed but most of the colors.
All tags are now lower case but not all colors are displayed.

See my two attachments.
One is the expected result and one is the actual result.

Here's the html string:
\r\n<html>\r\n<head>\r\n<style type=\"text/css\"> \r\n \r\n</style> \r\n\r\n<title>\r\nTextCompare:: c:\\testdata\\20newstxt\\atheism\\alt.atheism\\51124.TXT VS c:\\testdata\\20newstxt\\atheism\\alt.atheism\\51135.TXT\r\n</title>\r\n<script type=\"text/javascript\">\r\n\r\n</script>\r\n\r\n</head>\r\n<body onload='Loading()'>\r\n\r\n<table>\r\n<tr><td>Base </td><td><a href=\"c:\\testdata\\20newstxt\\atheism\\alt.atheism\\51124.TXT\">c:\\testdata\\20newstxt\\atheism\\alt.atheism\\51124.TXT</a></td></tr>\r\n<tr><td>Modified</td><td><a href=\"c:\\testdata\\20newstxt\\atheism\\alt.atheism\\51135.TXT\">c:\\testdata\\20newstxt\\atheism\\alt.atheism\\51135.TXT</a></td></tr>\r\n</table>\r\n\r\n<hr>\r\n\r\n\r\n<img src=\"flag1.jpg\" name=\"C28\" alt=\"Flag\"/>\r\nFrom: I3150101@dbstu1.rz.tu-bs.de (Benedikt Rosenau) \r\n \r\nSubject: Re: <img src=\"flag1.jpg\" name=\"C29\" alt=\"Flag\"/>\r\nAn Anecdote about Islam Ancient islamic rituals \r\n\r\nFrom: bobbe@vice.ICO.TEK.COM (Robert Beauchaine) \r\n \r\nOrganization: <img src=\"flag1.jpg\" name=\"C30\" alt=\"Flag\"/>\r\nTechnical University Braunschweig, Germany Tektronix, Inc., Beaverton, OR. \r\n \r\nLines: <img src=\"flag1.jpg\" name=\"C31\" alt=\"Flag\"/>\r\n28 33 \r\n \r\nIn article <img src=\"flag1.jpg\" name=\"C32\" alt=\"Flag\"/>\r\n<114127@bu.edu> \r\n\r\njaeger@buphy.bu.edu (Gregg Jaeger) <1993Apr3.081052.11292@monu6.cc.monash.edu.au> darice@yoyo.cc.monash.edu.au (Fred Rice) writes: <img src=\"flag1.jpg\" name=\"C33\" alt=\"Flag\"/>\r\n\r\n \r\n>>When they are victimized they are Muslims. When they victimize others \r\n \r\n>>they are not True Muslims (tm) or no Muslims at all. \r\n \r\n> \r\n \r\n>>Quite annoying. \r\n \r\n> \r\n \r\n>I <img src=\"flag1.jpg\" name=\"C34\" alt=\"Flag\"/>\r\ndon't understand the point of this petty sarcasm. It is a basic \r\n\r\n>principle of Islam that if one is born muslim or one says "I testify propose \r\n \r\n>that <img src=\"flag1.jpg\" name=\"C35\" alt=\"Flag\"/>\r\nthere is no god but God these two trends -- greater level of general depression in society \r\n\r\n>(and other psychological problems) and <img src=\"flag1.jpg\" name=\"C36\" alt=\"Flag\"/>\r\nMohammad is greater sexual promiscuity -- are \r\n\r\n>linked, with the latter being a <img src=\"flag1.jpg\" name=\"C37\" alt=\"Flag\"/>\r\nprophet prime cause of <img src=\"flag1.jpg\" name=\"C38\" alt=\"Flag\"/>\r\nGod" that, \r\n \r\n>so long as one does not explicitly reject Islam by word then one _must_ \r\n \r\n>be considered muslim by all muslims. So the <img src=\"flag1.jpg\" name=\"C39\" alt=\"Flag\"/>\r\nphenomenon you're attempting \r\n\r\n>to make into a general rule or psychology is a direct odds with basic \r\n\r\n>Islamic principles. If you want former. I cannot \r\n\r\n>provide any evidence beyond this at this stage, but the whole thesis \r\n\r\n>seems very reasonable to <img src=\"flag1.jpg\" name=\"C40\" alt=\"Flag\"/>\r\nattack Islam you could do better than \r\n\r\n>than to argue against something me and I request that <img src=\"flag1.jpg\" name=\"C41\" alt=\"Flag\"/>\r\nIslam explicitly contradicts. people ponder upon it. \r\n \r\n> <img src=\"flag1.jpg\" name=\"C42\" alt=\"Flag\"/>\r\n\r\n\r\nIt was no criticism of Islam \r\n\r\nDamn right you can't provide any evidence for <img src=\"flag1.jpg\" name=\"C43\" alt=\"Flag\"/>\r\nit. \r\n \r\nRarely are any widespread social phenomenon reducible to such a <img src=\"flag1.jpg\" name=\"C44\" alt=\"Flag\"/>\r\nchange, it was \r\n\r\nsimple premise. If they were, psychology would be a <img src=\"flag1.jpg\" name=\"C45\" alt=\"Flag\"/>\r\ncriticism of hard science \r\n\r\nwith roughly the <img src=\"flag1.jpg\" name=\"C46\" alt=\"Flag\"/>\r\n\r\n\r\narguments used. Namely, whenever people you identify same mathematical soundness as <img src=\"flag1.jpg\" name=\"C47\" alt=\"Flag\"/>\r\nMuslims are physics. \r\n\r\nYour premise may well be right. It is much more likely, however, \r\n\r\nthat it reflects your socialization and religious background, as \r\n\r\nwell as your need to validate your religious beliefs. Were I to \r\n\r\npretend to have all \r\n \r\nthe <img src=\"flag1.jpg\" name=\"C48\" alt=\"Flag\"/>\r\nvictims of answers (and I don't), I would say that the <img src=\"flag1.jpg\" name=\"C49\" alt=\"Flag\"/>\r\nattacks of others, they are used an argument for \r\n\r\nthe bad situation of Muslims. But whenever deeds \r\n\r\nxenophobia, guilt, and intolerance brought about by <img src=\"flag1.jpg\" name=\"C50\" alt=\"Flag\"/>\r\nMuslim that victimize \r\n\r\nothers are named, they do not count adherence to \r\n\r\nfundamentalist religions play just as <img src=\"flag1.jpg\" name=\"C51\" alt=\"Flag\"/>\r\nan argument because what these \r\n\r\npeople did was not done as large a <img src=\"flag1.jpg\" name=\"C52\" alt=\"Flag\"/>\r\ntrue Muslims. No mention is made how Muslims \r\n\r\nare role in depressing the <img src=\"flag1.jpg\" name=\"C53\" alt=\"Flag\"/>\r\ncause members of <img src=\"flag1.jpg\" name=\"C54\" alt=\"Flag\"/>\r\na bad situation of another party. \r\n\r\nDouble standards. \r\n\r\nBenedikt our society. \r\n\r\nYour mileage obviously varies. \r\n\r\n/\\/\\/\\/\\/\\/\\/\\/\\/\\/\\/\\/\\/\\/\\/\\/\\/\\/\\/\\/\\/\\/\\/\\/\\/\\/\\/\\/\\/\\/\\/\\/\\/\\/\\ \r\n\r\nBob Beauchaine bobbe@vice.ICO.TEK.COM \r\n\r\nThey said that Queens could stay, they blew the Bronx away, \r\n\r\nand sank Manhattan out at sea. \r\n\r\n^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ \r\n\r\n\r\n\r\n<hr>\r\n\r\n\r\nDocument comparison created by Equivio>Compare, a product of <a href=\"http://www.equivio.com\">Equivio</a>\r\n\r\n\r\n</body>\r\n</html>

Please assist.

answered on 29 Apr 2014, 06:23 AM

Hi Iva

Can I use Rad Richtextbox format in MVC ??, I am not finding any article about this, all i find is on Silverlight, which I dont need, I have a Unformatted text from Sql Server, which is

"<!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><meta
http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"
/><title>Untitled</title><style
type=\"text/css\">\r\n.s_D8D99854 { font-family:
'Verdana';font-style: Normal; }
\r\n</style></head><body> hello</body></html>"

where all I need is just "Hello" from above values, currently i am able to get this in Controller(action Result), but I am not getting any information to convert it into right format to read(html), Please help in this, I am trying this from 3 days!!

answered on 30 Apr 2014, 01:03 PM

Hello,

This forum concerns RadRichTextBox from the Telerik UI for Silverlight suite. If you want to utilize another tool please address your question to the appropriate forum.

Overall, integrating a Silverlight control in MVC is possible, here is a blog post that might help you with this task.

The way RadRichTextBox exports HTML can be modified using the export settings explained here. Due to the difference between the HTML DOM and RadDocument's internal structure it is hard to allow lossless export and keep the HTML simple and clean, so the export options are somewhat limited. If they do not fit your needs I'd suggest post processing the generated document.

I hope this helps.

Regards,
Petya
Telerik

Check out Telerik Analytics, the service which allows developers to discover app usage patterns, analyze user data, log exceptions, solve problems and profile application performance at run time. Watch the videos and start improving your app based on facts, not hunches.

answered on 11 May 2015, 11:49 AM

Hi Telerik Team,

I am using Telerik RadRichTextBox. I am trying to get the text from Clipboard (when user copy pastes onto Telerik RadRichTextBox) and then remove the images if any in the text and then using HtmlFormatProvider -> Import(); method to get the data .

But this returns a special character at the start of the text. Please see attached text.

Could you please advice why this is happening and how I can get html text without the special character ??????

Here is the sample code :

string textToInsert = Clipboard.GetText(TextDataFormat.Html);

//remove the images
while (true)
{
int startIndexOfImage = textToInsert.IndexOf("<img");
if (startIndexOfImage <= 0)
{
break;
}

int endIndexOfImage = textToInsert.IndexOf(">", startIndexOfImage);
textToInsert = textToInsert.Remove(startIndexOfImage, (endIndexOfImage - startIndexOfImage)+1);
}

MessageRadRichTextBox.Document = ImportHtmlAsRadDocument(textToInsert);

public static RadDocument ImportHtmlAsRadDocument(string content)
{
if (content != null)
{
HtmlFormatProvider provider = new HtmlFormatProvider();
return provider.Import(content);
}
return new RadDocument();
}

answered on 13 May 2015, 02:40 PM

Hello Mamtha,

Could you confirm you are using RadRichTextBox from our Silverlight suite, please?

The reason I'm asking is the fact that due to a limitation in the Silverlight framework, copying and pasting rich text is not possible and there is no overload of the Clipboard.GetText() method that accepts format.

In case you are using a control from one of our other suites, please submit the question in the respective forum section.

Regards,
Petya
Telerik

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Problem with RadRichTextBox with HTMLFormatProvider

8 Answers, 1 is accepted