[mapguide-users] RE: Simple Query. How to.

[Willem Schwarte]

Can't really remember, but this is also in de dev. manual. So
translating to C# shouldn't be too hard...

Willem



-----Oorspronkelijk bericht-----
Van: mapguide-users-bounces at lists.osgeo.org
[mailto:mapguide-users-bounces at lists.osgeo.org] Namens MaciekS
Verzonden: maandag 12 februari 2007 16:31
Aan: mapguide-users at lists.osgeo.org
Onderwerp: [mapguide-users] RE: Simple Query. How to.


Willem, thank you for fast reply.
Did you or anybody saw any examples in C#?

Maciek



Willem Schwarte wrote:
> 
> You can create a layer in studio as how it should look, and save this
as
> a XML file (menu File).
> 
> Then you can load this XML as a new layer in your code and set the
> FILTER (id=1 or whatever) add the layer to your map and refresh (or
> not). 
> 
> This is how I do this. There is an example on the example site on
> osgeo.org.
> 
> Something like this: 
> 
>    // Change the filter
>     $xpath = new DOMXPath($domDocument);
> 
>     $query = '//Filter';
>     // Get a list of all the <AreaRule><Filter> elements in
>     // the XML.   
>     $nodes = $xpath->query($query);
> 
>     // Find the correct node and change it , this is the filter
>     foreach ($nodes as $node )
>     {
>             $node->nodeValue = '"afz_nr" = '.$_GET['afznr'].'';
>     }
> 	
>     
>     // Add the layer to the map
>     $layerDefinition = $domDocument->saveXML();
> 
> 	   $newLayer = add_layer_definition_to_map($layerDefinition,
> "newlayer", "Route", $sessionId, $resourceService, $map,0);
> 
> 
> Willem
> 
> 
> 
> -----Oorspronkelijk bericht-----
> Van: mapguide-users-bounces at lists.osgeo.org
> [mailto:mapguide-users-bounces at lists.osgeo.org] Namens MaciekS
> Verzonden: maandag 12 februari 2007 15:33
> Aan: mapguide-users at lists.osgeo.org
> Onderwerp: [mapguide-users] Simple Query. How to.
> 
> 
> Hi MapGuide developers.
> 
> Does somebody know how to filter data on specified, existing layer?
> 
> I added a layer from a SHP file to my repository using MapGuide
Studio.
> Now I'd like to filter this layer from my code with a simple query,
for
> example (where ID=1).
> How should I built my code to execute the query that finally will
> display in
> the browser only polygons specified in the query?
> 
> Regards, Maciek
> 
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