[mapguide-users] Edit Layer

[Kenneth Skovhede, GEOGRAF A/S]

Oh, a small error, was in the post.
Try to use the code here instead:
http://trac.osgeo.org/mapguide/wiki/maestro/MaestroAPI/samples/ModifyLayerFilter

Regards, Kenneth Skovhede, GEOGRAF A/S



Kenneth Skovhede, GEOGRAF A/S skrev:
> You need to call the aspx page with the session id, either as a 
> querystring or as a post.
>
> 'Read setup from querystring or form
> Dim sessionID As String = Request.Params("SESSIONID")
> Dim mapdefinition As String = Request.Params("MAPDEFINITION")
> Dim layername As String = Request.Params("LAYERNAME")
> Dim newFilter As String = Request.Params("NEWFILTER")
>
> 'Replace "myserver" with the server name, or use "localhost"
> Dim host As New Uri("http://myserver/mapguide/mapagent/mapagent.fcgi")
> Dim conn as ServerConnectionI = New HttpServerConnection(host, 
> sessionID, "en", true)
>
> 'Use the same naming system as the viewer, when reading the runtime 
> map ID
> Dim mapName as String = new ResourceIdentifier(mapdefinition).Name
> Dim rtMapId as String = new ResourceIdentifier(mapName, 
> ResourceTypes.RuntimeMap, conn.SessionID)
>
> 'Load the runtime map
> Dim rtMap as RuntimeClasses.RuntimeMap = conn.GetRuntimeMap(rtMapId)
> Dim rtLayer as RuntimeClasses.RuntimeMapLayer = rtMap.Layers(layername)
>
> 'Get the current layer and assing the filter
> Dim layerDefinition as LayerDefinition = 
> conn.GetLayerDefinition(rtLayer.ResourceId)
> Dim vectorLayerDefinition as VectorLayerDefinitionType = 
> layerDefinition.Item
> vectorLayerDefinition.Filter = newFilter
>
> 'Save a copy of the layer, temporary, and random name
> rtLayer.ResourceID = new ResourceIdentifier(Guid.NewGuid().ToString(), 
> ResourceTypes.LayerDefinition, conn.SessionID)
> conn.SaveResourceAs(layerDefinition, rtLayer)
>
> 'Save the runtime map, pointing to the updated layerdefinition
> conn.SaveRuntimeMap(rtMapId, rtMap)
>
> 'Tell the client to refresh
> RegisterStartupScript("key", "<script>GetMapFrame().Refresh();</script>")
>
> Regards, Kenneth Skovhede, GEOGRAF A/S
>
>
>
> padmini godavarthi skrev:
>> Hi iam using Mapguide opensource 2.0(with .net 2.0 +IIS 5.1)
>>
>> Hi, We want modify dynamically a layer; for exemple, modify the 
>> filter of a
>> layer  when the map is loaded;Is it possible ? What is the method : 
>> using an
>> API ? 
>>
>> can u give me the sample code in .net so that it will be very helpful 
>> to me
>>
>> Regards,
>> Padmini.
>>   
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