protected void Page_Load(object sender, EventArgs e)
{
string agent = ConfigurationManager.AppSettings["MapAgentUrl"];
IServerConnection conn = ConnectionProviderRegistry.CreateConnection(
"Maestro.Http",
"Url", agent,
"SessionId", Request.Params["SESSION"]);
IMappingService mpSvc = (IMappingService)conn.GetService((int)ServiceType.Mapping);
string rtMapId = "Session:" + conn.SessionID + "//" + Request.Params["MAPNAME"] + ".Map";
RuntimeMap rtMap = mpSvc.OpenMap(rtMapId);
string xml = Request.Params["SELECTION"];
//The map selection contains one or more layer selections
//each containing a one or more sets of identity property values
//(because a feature may have multiple identity properties)
MapSelection selection = new MapSelection(rtMap, HttpUtility.UrlDecode(xml));
if (selection.Count > 0)
{
StringBuilder sb = new StringBuilder();
for (int i = 0; i < selection.Count; i++)
{
MapSelection.LayerSelection layerSel = selection[i];
sb.Append("<p>Layer: " + layerSel.Layer.Name + " (" + layerSel.Count + " selected item)");
sb.Append("<table>");
for (int j = 0; j < layerSel.Count; j++)
{
sb.Append("<tr>");
object[] values = layerSel[j];
for (int k = 0; k < values.Length; k++)
{
sb.Append("<td>");
sb.Append(values[k].ToString());
sb.Append("</td>");
}
sb.AppendFormat("<td><a href='FeatureInfo.aspx?MAPNAME={0}&SESSION={1}&LAYERID={2}&ID={3}'>More Info</a></td>",
rtMap.Name,
conn.SessionID,
layerSel.Layer.ObjectId,
HttpUtility.UrlEncode(layerSel.EncodeIDString(values)));
sb.Append("</tr>");
}
sb.Append("</table>");
lblMessage.Text = "Showing IDs of selected features";
result.InnerHtml = sb.ToString();
}
}
else
{
lblMessage.Text = "Nothing selected. Select some features first then run this sample again.";
}
}
protected void btnSelect_Click(object sender, EventArgs e)
{
string agent = ConfigurationManager.AppSettings["MapAgentUrl"];
MAPNAME.Value = Request.Params["MAPNAME"];
SESSION.Value = Request.Params["SESSION"];
IServerConnection conn = ConnectionProviderRegistry.CreateConnection(
"Maestro.Http",
"Url", agent,
"SessionId", SESSION.Value);
IMappingService mpSvc = (IMappingService)conn.GetService((int)ServiceType.Mapping);
string rtMapId = "Session:" + conn.SessionID + "//" + MAPNAME.Value + ".Map";
RuntimeMap rtMap = mpSvc.OpenMap(rtMapId);
//Get the selected layer
RuntimeMapLayer rtLayer = rtMap.Layers.GetByObjectId(ddlLayers.SelectedValue);
//Query using the user filter
IFeatureReader reader = conn.FeatureService.QueryFeatureSource(
rtLayer.FeatureSourceID,
rtLayer.QualifiedClassName,
txtFilter.Text);
//Get the selection set
MapSelection sel = new MapSelection(rtMap);
MapSelection.LayerSelection layerSel = null;
if (!sel.Contains(rtLayer))
{
sel.Add(rtLayer);
}
layerSel = sel[rtLayer];
//Clear any existing selections
layerSel.Clear();
//Populate selection set with query result
int added = layerSel.AddFeatures(reader, -1);
//Generate selection string
string selXml = sel.ToXml();
//Generate a client-side set selection and execute a "Zoom to Selection" afterwards
Page.ClientScript.RegisterStartupScript(
this.GetType(),
"load",
"<script type=\"text/javascript\"> window.onload = function() { parent.parent.GetMapFrame().SetSelectionXML('" + selXml + "'); parent.parent.ExecuteMapAction(10); } </script>");
lblMessage.Text = added + " features in " + rtLayer.Name + " selected";
}
