Base map disappears when zooming in

SamirGambhir

Hi,
Any action (using comboox list) to zoom to a selected sub-geography of the country makes the base map disappear from my application. Further, if I try to zoom in using the zoom slider, the ESRI street map disappears as well. Furthermore, if I select the entire country using the combobox (i.e. calling the full extent of the base map), all my map services are visible. I have looked up various posts here and checked the wkid issue as well, but haven't been able to resolve it. Please help.
Here is part of my JS code:

function getStateExt(State) {
var mapExtent;
if (State != "All India") {
   var myState = State.toUpperCase();
   mapExtent = new esri.geometry.Extent();
   var queryTask = new esri.tasks.QueryTask("http://nsmhpc7007:8399/arcgis/rest/services/wch3/MapServer/9");
   dojo.connect(queryTask, "onComplete", function(featureSet) {
    var features = featureSet.features;
    stateExtent = features[0].geometry.getExtent();
    mapExtent.xmin = stateExtent.xmin - 150000;
    mapExtent.ymin = stateExtent.ymin - 75000;
    mapExtent.xmax = stateExtent.xmax + 150000;
    mapExtent.ymax = stateExtent.ymax + 75000;
    map.setExtent(mapExtent);
   });
   var qState = new esri.tasks.Query();
   qState.where = "name = '" + myState + "'";
   qState.returnGeometry = true;
   qState.outFields = ["name"];
   queryTask.execute(qState);
  } else if (State == "All India") {
   mapExtent = new esri.geometry.Extent();
   mapExtent = iniExtentM; /*iniExtentM is set in the init() function as iniExtentM = new esri.geometry.Extent({
  "xmin" : 6906469.033685486,
  "ymin" : 507780.9570028302,
  "xmax" : 11085388.124604845,
  "ymax" : 4734224.864539183,
  "spatialReference" : {
   "wkid" : 102100
  }
});*/
map.setExtent(mapExtent);
  }
 
}

Thanks
Samir

SamirGambhir

Hi Steve,
I figured out the problem. I am trying to extract the extent of the geometry and trying to pass on this info to a common .setExtent method. I have the following code which is incorrect, but can you please suggest a way to do this? I would like to keep .setExtent outside my if-else loop. Thanks, Samir

function getStateExt(State) {
 var zoomExtent;
  if (State != "All India") {
   var myState = State.toUpperCase();
   var queryTask = new esri.tasks.QueryTask("http://nsmhpc7007:8399/arcgis/rest/services/wch3/MapServer/9");
   var qState = new esri.tasks.Query();
   qState.where = "name = '" + myState + "'";
   qState.returnGeometry = true;
   qState.outFields = ["name"];
   queryTask.execute(qState);
   dojo.connect(queryTask, "onComplete", function(featureSet) {
    var features = featureSet.features;
    stateExtent = features[0].geometry.getExtent();
    var zoomExtentXmin = stateExtent.xmin - 150000;
    var zoomExtentYmin = stateExtent.ymin - 75000;
    var zoomExtentXmax = stateExtent.xmax + 150000;
    var zoomExtentYmax = stateExtent.ymax + 75000;
    zoomExtent = new esri.geometry.Extent({"xmin":zoomExtentXmin, "ymin":zoomExtentYmin, "xmax":zoomExtentXmax, "ymax":zoomExtentYmax,"spatialReference":{"wkid":102100}});
   });
  } else if (State == "All India") {
   zoomExtent = iniExtentM.getExtent();
  }
  mapM.setExtent(zoomExtent);
 
}