Very odd.
I have been using this code to read data from the server:
XmlDocument doc = new XmlDocument();
{
MgByteReader rd = rs.GetResourceContent(new
MgResourceIdentifier(webLayout));
using(System.IO.MemoryStream ms = new System.IO.MemoryStream())
{
byte[] buf = new byte[1024];
int c = 0;
do
{
c = rd.Read(buf, buf.Length);
ms.Write(buf, 0, c);
} while (c != 0);
ms.Position = 0;
doc.Load(ms);
}
}
It worked the last time I used it, but that was a while ago (around 1.2
beta 1, I think).
Regards, Kenneth, GEOGRAF A/S
Campbell, Keith A skrev:
Kenneth,
If I run this code, it results in an endless loop because the
read = mapByteRdr.Read(buf, buf.length);
call reads the same data each time - the start point for each read is
not advanced.
Keith
------------------------------------------------------------------------
*From:* [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] *On Behalf Of
*Kenneth, GEOGRAF A/S
*Sent:* 31 August 2007 17:14
*To:* MapGuide Users Mail List
*Subject:* Re: [mapguide-users] ByteReader Problem
The only way around it, that I have found, is to copy/paste code like
this:
System.IO.MemoryStream ms = new System.IO.MemoryStream();
byte[] buf = new byte[8*1024];
int read = 1;
while(read != 0)
{
read = mapByteRdr.Read(buf, buf.length);
ms.Write(buf, 0, read);
}
//ms now contains the stream
Regards, Kenneth, GEOGRAF A/S
Campbell, Keith A skrev:
Thanks Dennis.
I've tried this, but I'm only getting 8192 bytes read into the byte
buffer. This seems to be the problem mentioned by Kenneth. The Read
method doesn't seem to allow the start location for the read to be
set, so looping until the entire content of the Resource is read into
the buffer doesn't seem to be an option.
Presumably somebody must have found a way around this.
Keith
------------------------------------------------------------------------
*From:* [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] *On Behalf Of *Jonio,
Dennis (Aviation)
*Sent:* 31 August 2007 14:05
*To:* MapGuide Users Mail List
*Subject:* RE: [mapguide-users] ByteReader Problem
... 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:* [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] *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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