Hi tim here is the code im working with
dojo.require("dijit.layout.BorderContainer");
dojo.require("dijit.layout.ContentPane");
dojo.require("esri.map");
dojo.require("esri.tasks.geometry");
dojo.require("esri.toolbars.draw");
dojo.require("esri.tasks.query");
dojo.require("esri.layers.FeatureLayer");
dojo.require("dojox.grid.DataGrid");
dojo.require("dojo.data.ItemFileReadStore");
dojo.require("dojo/_base/array");
dojo.require("dojo/store/Memory");
dojo.require("esri.tasks.find");
var map, gsvc, tb, arrayUtils;
var grid, store, data, OnDemandGrid, Memory;
var findTask, findParams;
function initialize() {
map = new esri.Map("map", {
center: [-111.5, 39.541],
zoom: 7
});
landBaseLayer = new esri.layers.ArcGISDynamicMapServiceLayer("http://192.168.2.35/ArcGIS/rest/services/point/MapServer", { opacity: 5.55 });
map.addLayer(landBaseLayer);
dojo.connect(map, "onLoad", initToolbar);
gsvc = new esri.tasks.GeometryService("http://192.168.2.35/ArcGIS/rest/services/Geometry/GeometryServer");
esri.config.defaults.io.proxyUrl = "/proxy";
esri.config.defaults.io.alwaysUseProxy = false;
// }
function initToolbar(map) {
tb = new esri.toolbars.Draw(map);
dojo.connect(tb, "onDrawEnd", doBuffer);
}
function doBuffer(geometry) {
debugger;
if (geometry.type == "point") {
var symbol = new esri.symbol.SimpleMarkerSymbol(esri.symbol.SimpleMarkerSymbol.STYLE_SQUARE, 10, new esri.symbol.SimpleLineSymbol(esri.symbol.SimpleLineSymbol.STYLE_SOLID, new dojo.Color([255, 0, 0]), 1), new dojo.Color([0, 255, 0, 0.25]));
}
else if (geometry.type == "polyline") {
var symbol = new esri.symbol.SimpleLineSymbol(esri.symbol.SimpleLineSymbol.STYLE_DASH, new dojo.Color([255, 0, 0]), 1);
}
else if (geometry.type == "polygon") {
var symbol = new esri.symbol.SimpleFillSymbol(esri.symbol.SimpleFillSymbol.STYLE_NONE, new esri.symbol.SimpleLineSymbol(esri.symbol.SimpleLineSymbol.STYLE_DASHDOT, new dojo.Color([255, 0, 0]), 2), new dojo.Color([255, 255, 0, 0.25]));
}
var featureLayer = new esri.layers.FeatureLayer("http://192.168.2.35/ArcGIS/rest/services/point/MapServer/" + ddlViewBy.value, {
mode: esri.layers.FeatureLayer.MODE_SELECTION,
outFields: ["*"]
});
map.addLayer(featureLayer);
var symbol = new esri.symbol.SimpleMarkerSymbol().setColor(new dojo.Color([255, 0, 0]));
featureLayer.setSelectionSymbol(symbol);
var graphic = new esri.Graphic(geometry, symbol);
// map.graphics.add(graphic);
//setup the buffer parameters
var params = new esri.tasks.BufferParameters();
params.distances = [dojo.byId("distance").value];
params.bufferSpatialReference = new esri.SpatialReference({ wkid: dojo.byId("bufferSpatialReference").value });
params.outSpatialReference = map.spatialReference;
params.unit = eval("esri.tasks.GeometryService." + dojo.byId("unit").value);
if (geometry.type === "polygon") {
debugger;
//if geometry is a polygon then simplify polygon. This will make the user drawn polygon topologically correct.
gsvc.simplify([geometry], function (geometries) {
params.geometries = geometries;
gsvc.buffer(params, showBuffer);
});
} else {
params.geometries = [geometry];
gsvc.buffer(params);
}
//code used to set graphics for polygon buffer//////////////////////////////////////////////
function showBuffer(bufferedGeometries) {
debugger;
var symbol = new esri.symbol.SimpleFillSymbol(
esri.symbol.SimpleFillSymbol.STYLE_SOLID,
new esri.symbol.SimpleLineSymbol(
esri.symbol.SimpleLineSymbol.STYLE_SOLID,
new dojo.Color([255, 0, 0]), 2
),
new dojo.Color([255, 0, 0])
);
dojo.forEach(bufferedGeometries, function (geometry) {
var graphic = new esri.Graphic(geometry, symbol);
// map.graphics.add(graphic);
});
tb.deactivate();
map.showZoomSlider();
}
///////////////////////////////////////////////////////////////////////////////////
var highlightSymbol = new esri.symbol.SimpleMarkerSymbol().setColor(new dojo.Color([255, 0, 0]));
gsvc.on("buffer-complete", function (extent) {
// console.log(extent);
var results = [];
dojo.forEach(map.graphics.graphics, function (graphic) {
});
});
gsvc.on("buffer-complete", function (result) {
//draw the buffer geometry on the map as a map graphic
var symbol = new esri.symbol.SimpleFillSymbol(
esri.symbol.SimpleFillSymbol.STYLE_SOLID,
new esri.symbol.SimpleLineSymbol(
esri.symbol.SimpleLineSymbol.STYLE_SOLID,
new dojo.Color([255, 0, 0, 0.65]), 2
),
new dojo.Color([255, 0, 0, 0.35])
);
var bufferGeometry = result.geometries[0];
// console.log(bufferGeometry);
var graphic = new esri.Graphic(bufferGeometry, symbol);
map.graphics.add(graphic);
//Select features within the buffered polygon. To do so we'll create a query to use the buffer graphic
//as the selection geometry.
var query = new esri.tasks.Query();
// console.log(query);
query.geometry = bufferGeometry;
// console.log(query);
featureLayer.selectFeatures(query, esri.layers.FeatureLayer.SELECTION_NEW, function (results, i) {
$("#getData").empty();
var c = featureLayer.getSelectedFeatures();
var raja = 0;
if (c.length > 0) {
for (n = 0; n < c.length; n++) {
var o = c.attributes,
o1 = JSON.stringify(o);
o2 = o1.replace("{", ""),
o3 = o2.replace("}", ""),
o4 = o3.split(",");
var c1 = "<table border='0' cellspacing='0' cellpadding='0'><tr>";
if (o4.length > 0) {
if (raja == 0) {
for (s = 0; s < o4.length; s++) {
o5 = o4.split(":");
o6 = o5[0].replace('"', '');
o6 = o6.replace('"', '');
o7 = o5[1];
c1 += "<td style='border: solid 1px; background-color: #ccc;height:50px;'>" + o6 + "</td>";
}
raja = 1;
}
c1 += "</tr><tr>";
for (s = 0; s < o4.length; s++) {
o5 = o4.split(":");
o7 = o5[1];
c1 += "<td style='border: solid 1px;min-width: 250px;'><p>" + o7 + "</p></td>";
}
c1 += "</tr></table>"
$("#getData").append(c1);
}
}
}
var totalPopulation = sumPopulation(results);
var r = "";
r = "<b>The total Census Block population within the buffer is <i>" + totalPopulation + "</i>.</b>";
dojo.byId('messages').innerHTML = r;
});
});
}
}
function errorMessage(error) {
debugger;
console.log(error);
}
function sumPopulation(features) {
var popTotal = 0;
for (var x = 0; x < features.length; x++) {
popTotal = popTotal + features.attributes["OBJECTID"];
}
return popTotal;
}
dojo.ready(initialize);
