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How to show XML document content?

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HTMLPlaceHolder

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answered on 29 Jan 2010, 02:15 PM

Unfortunately it will not be the same as if I had SourceUrl initialized with the path to valid XML file. In the later case HtmlPlaceholder uses underlying browser to display XML content and that automatically creates colors indents, etc.. Also XML document in this case is "interactive" because its XML elements and nodes can be collapsed/expanded (this what IE and some other browsers do with external XML documents by default). By using my own custom formatting of XML string as HTML document I will not get this "interactivity".

Why wouldn't you had HTMLPlaceholder property like Content-Type that by default is text/html and if it is text/xml it will interpret HtmlSource value as XML but not HTML and act on it accordingly. At the end of the day all we need is to let underlying browser to act on XML document the way it already can, we just need this functionality to be exposed through HTMLPlaceholder control.

Thanks,
Andrew

answered on 29 Jan 2010, 02:43 PM

Hi andrew rekvils,

Basically we are using an iframe for external content and we dont have the option to change the content type.

Another option for you which will not require the parsing would be to save the XML content by using a service on the server, and then to direct the HtmlPlaceholder to the saved url ( e.g. to the XML file). This is not very good from performance point of view, but it all depends from your application requirements.

Sincerely yours,
Valentin.Stoychev
the Telerik team

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answered on 25 Feb 2010, 10:10 PM

Hi,

Here is what we are doing. Now, what we have as our input is XML that is in one large string (everything is in one line and there were spaces in the original XML file at the beginning of each line)... Here's the VB code:

                    Dim MessageDetails As New RadHtmlPlaceholder         
            Dim TmpString As String         
                     
            AuditGridRow = TryCast(Me.AuditsGrid.SelectedItem, tblMessageAudit)         
            radPane2.Header = Left(e.NewCell.Content.ToString, 8) & "..."         
            TmpString = AuditGridRow.XMLMessage.ToString         
            TmpString = TmpString.Replace("<", "&lt;")         
            TmpString = TmpString.Replace("> ", "~~~~")  ' handle this afterwards         
            TmpString = TmpString.Replace(">", "&gt;")  ' the > that don't have a space after them         
            TmpString = TmpString.Replace("~~~~", "&gt;<br/>") ' so they have newlines in the HTML         
            TmpString = TmpString.Replace("  ", "&nbsp&nbsp")         
            TmpString = "<!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 content='text/html; charset=utf-8' http-equiv='Content-Type' /><title>XML Message</title></head><body><div style='font-family: 'Courier New', Courier, monospace;   font-size: x-small; width:100%;' >" & TmpString         
            TmpString = TmpString & "</div></body></html>"         
                     
            MessageDetails.HtmlSource = TmpString         

well, the AuditsGridRow and radPane2 rows are where I pull the data out from a grid and manage a docking panel...

it gets the job done and the output looks OK, except for the font
everyone who sees the code knows immediately what it is doing
it is fast
it will never win me any award for 'sophisticated programmer of the year' :-) but I didn't see anyone step up with anything better either :-)

Now, I need to try and figure out why it always shows up in 12 point Times Roman, no matter what I do.

Rob