[mapguide-users] ByteReader Problem

[Jonio, Dennis (Aviation)]

... this sequence tends to work     

 

     // For some reason the MgByteReader "disappears"

     // This seems to work ....

            long long_length = rs.GetResourceContent(resId).GetLength();

            byte[] byteBuffer = new byte[long_length];

            int numBytes = rs.GetResourceContent(resId).Read(byteBuffer,
(int)long_length);

 

-----Original Message-----
From: mapguide-users-bounces at lists.osgeo.org
[mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of Campbell,
Keith A
Sent: Friday, August 31, 2007 7:10 AM
To: MapGuide Users Mail List
Subject: [mapguide-users] ByteReader Problem

 

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 

 

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