[mapguide-users] ByteReader Problem

[Campbell, Keith A]

Thanks Kenneth.
 
This does explain what I'm seeing.
 
I have tried MgByteSink, but am having the same problem with it.
 
Keith

________________________________

From: mapguide-users-bounces at lists.osgeo.org
[mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of Kenneth,
GEOGRAF A/S
Sent: 31 August 2007 12:44
To: MapGuide Users Mail List
Subject: Re: [mapguide-users] ByteReader Problem


The "ToString()" is not implemented, and thus returns "MgByteReader",
which you cannot use as an XML document.

The MgByteReader is very volatile and fragile, when you try to debug it
with VS.
Any attempt to pass the byte reader to a function (as a parameter) will
clear the stream.
You cannot read more than 8kb out of the stream in a single Read()
operation, making it a royal pain to use the MgByteReader.

I have seen others using an MgByteSink, but I have yet to try that.


Regards, Kenneth, GEOGRAF A/S


Campbell, Keith A skrev: 

	I am trying to alter a map definition through the API and cannot
get the contents of the MgByteReader in string format. Here's the code:-

	            String mapDefinition = "Library://My Folder/Maps/My
Map.MapDefinition"; 
	            MgResourceIdentifier MapResID = new
MgResourceIdentifier(mapDefinition); 

	            MgByteReader mapByteRdr =
res.GetResourceContent(MapResID);//res is instantiated Resource Service.


	            XmlDocument doc = new XmlDocument(); 
	            
	            doc.LoadXml(mapByteRdr.ToString()); 

	LoadXML fails with an error ' Root element is missing'. I can
copy the contents of mapByteRdr from Visual Studio at runtime and it
contains properly formatted XML for the map definition. If I use the
ToFile() method, the resultant file is empty. I cannot see why these two
methods do not return the xml string in the reader. Any help is welcome.

	Cheers, 

	Keith 



	This email and any attached files are confidential and copyright
protected. If you are not the addressee, any dissemination of this
communication is strictly prohibited. Unless otherwise expressly agreed
in writing, nothing stated in this communication shall be legally
binding. 

	The ultimate parent company of the Atkins Group is WS Atkins
plc. Registered in England No. 1885586. Registered Office Woodcote
Grove, Ashley Road, Epsom, Surrey KT18 5BW. 

	P Consider the environment. Please don't print this e-mail
unless you really need to. 

	
________________________________


	_______________________________________________
	mapguide-users mailing list
	mapguide-users at lists.osgeo.org
	http://lists.osgeo.org/mailman/listinfo/mapguide-users
	  



This message has been scanned for viruses by MailControl
<http://bluepages.wsatkins.co.uk/?6875772> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/mapguide-users/attachments/20070831/da27de6a/attachment.html