I don't have sample code to show, but you should use the
GetResource/SetResource calls.
These will return/take an MgByteReader.
The reader holds a binary version of the Xml document.
if you use write the content into a regular .Net stream, you can read it
with the System.Xml calls.
When you write it back, there are a number of caveats:
1. The document must be UTF-8 encoded
2. The document must contain spaces between tags, otherwise Studio won't
show it.
3. If the XmlWriter decides to prefix the byte stream with the UTF-8
byte order tags, you must remove them.
The MgByteReader is a bit annoying to work with, as it only returns
chunks of 8K data, and looses data when transfered to a function.
Regards, Kenneth, GEOGRAF A/S
jas skrev:
I am trying to replicate the SQL Where functionality that was used in MG6.5
or earlier. I have looked at the DEV Guide and checked out the forum and
found the 2 methods explained and the one I am interested in is the saved
XML approach.
Does anyone have some sample code, written .NET, that modifies the filter
applied to a layer for that particular session. I am new to .NET.
Dev Guide page 56
"Creating Layers By Modifying XML"
1 Build a prototype layer through the Studio UI. To make the
scripting
simpler, this layer should have as many of the correct settings as can be
determined in advance.
2 Use Studio’s Save as Xml command to save the layer as an XML
file.
3 Have the script load the XML file and then use the DOM
(Document
Object Model) to change the necessary XML elements.
4 Add the modified layer to the map.
Appreciate your help
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