[mapguide-users] Problem with Layer Editing

Tue Dec 9 11:41:59 EST 2008

Hi 
iam using mapguide opensource 2.0(with .net 2.0 +IIS 5.1)
i already asked the question

1)How to edit the layer

some one give me the answer as follows

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>") 

but my problem is that

1) I dont know where to and how to start the code

i had only main.aspx page which contains the following code 

     %@ Page language="c#" %>
<%@ Import Namespace="System.IO" %>
<%@ Import Namespace="System.Collections.Specialized" %>
<%@ Import Namespace="System.Text" %>
<%@ Import Namespace="System.Globalization" %>
<%@ Import Namespace="OSGeo.MapGuide" %>

<script runat="server">
    String webLayout = "Library://Filesample/layout/weblay.WebLayout";
String sessionId = "";
</script>

<%
    try
    {
        // Initialize a session and register a variable to hold the
        // session id, then initialize the Web Extensions, connect
        // to the site, and create a session.

        // Initialize Web Server Extensions.
        String realPath = Request.ServerVariables["APPL_PHYSICAL_PATH"];
        String configPath = realPath + "..\\webconfig.ini";
        MapGuideApi.MgInitializeWebTier(configPath);

        // Connect to the site.
        MgUserInformation userInfo = new MgUserInformation("Anonymous", "");
        MgSite site = new MgSite();
        site.Open(userInfo);

		// Create a session
        sessionId = site.CreateSession();

    }
    catch (Exception e)
    {
        Response.Write(e.Message);
    }
%>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
    <title>MapGuide Developer's Guide ASP.NET Samples</title>

</script>
</head>

<frameset rows="110,*" frameborder="no" framespacing="0">
	<frame id="titleFrame" frameborder="no" marginwidth="0" marginheight="0"
scrolling="no" src="title.html">
	<frame id="viewerFrame" frameborder="no" marginwidth="0" marginheight="0"
scrolling="no"
src="../mapviewernet/ajaxviewer.aspx?SESSION=<%=sessionId%>&WEBLAYOUT=<%=webLayout%>">
</frameset>

</html>

In my weblayout there is 2 layers  (polgon layer and line layer)

i looked at the code for dotnetsmples but i totally confused with that code.

can u plz tell me how to and where i can write the code for layer editing

Thanks and Regards,
Padmini.

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