[mapguide-users] Edit Layer

[Kenneth Skovhede, GEOGRAF A/S]

The sessionId can be read from the map, using javascript.
Refer to the MapGuide Viewer API:
file:///C:/Program 
Files/MapGuideOpenSource2.0/WebServerExtensions/Help/viewerapi.html

The MapDefinition is the name of the map used, you must supply this 
manually.
You may also read it from the WebLayout, or possibly use the javascript 
GetMapName() to read the RuntimeMap ResourceId.
(In the latter case, you can skip the code that converts the 
MapDefinition ResourceId to the RuntimeMap ResourceId).

The Layername is the name of the layer on which you wish to modify the 
filter.
The NewFilter is the filter to use on the layer, eg. "ID > 10 AND ID < 100".
These two parameters are likely something you will set manually.

Regards, Kenneth Skovhede, GEOGRAF A/S



padmini godavarthi skrev:
> Hi,
> Thanks
>
> In ur code 
>
>
> 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") 
>
> 1) from where it will come.i mean  Request.Params("SESSIONID") ,
> Request.Params("MAPDEFINITION") ,Request.Params("LAYERNAME") ,
> Request.Params("NEWFILTER")  all these things
>
>
> Regards,
> Padmini
>  
>
>
>
> Kenneth Skovhede, GEOGRAF A/S wrote:
>   
>> 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.
>>>   
>>>       
>> _______________________________________________
>> mapguide-users mailing list
>> mapguide-users at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/mapguide-users
>>
>>
>>     
>
>   
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