[OpenLayers-Dev] Export vector layer featuers as .kml and download that .kml file

[mano3688]

Hello sir,
           Now i trying to create .kml file but i don't how to create .kml
file and download that .kml file,Please tell me if you know anybody.I am
using wms and vector layer on the map.Features will be added when i click on
the map .

i want export vector layers as .kml file and how to download that file.

I write my partial code here,




map = new OpenLayers.Map('map');
			map.addControl(new OpenLayers.Control.LayerSwitcher());
  
   

			// create Google Mercator layers
		    googleLayer = new OpenLayers.Layer.Google("Google Streets Map",{ 
							 'sphericalMercator': true
							});	 
			osmLayer = new OpenLayers.Layer.OSM("Open Street Map");
			
			stateLayer=new OpenLayers.Layer.WMS(
			
	        "States", "http://localhost:8080/geoserver/wms",
	        {
	        	layers: 'kcube:States',
	        	transparent: true,
	            styles: '',
	            format:'image/png',
	            tiled: 'true',
	            srs: 'EPSG:4326'
	        },
	        {
	        	buffer: 0,
	            isBaseLayer: false
	        }
	          
	    );
		layer=stateLayer.name;
		var select = new OpenLayers.Layer.Vector("Selection");
	
		map.addLayers([googleLayer, osmLayer,stateLayer,select]);
		
		var control = new OpenLayers.Control.GetFeature({
			protocol: OpenLayers.Protocol.WFS.fromWMSLayer(stateLayer),
			multipleKey: "shiftKey",
			toggleKey: "ctrlKey"
		});
		control.events.register("featureselected", this, function(e) {
		 
				if(select.features.length)
				{
					select.removeAllFeatures();
				}
				select.addFeatures([e.feature]);
			
				 var kmlFormat = new OpenLayers.Format.KML(
								 {
									internalProjection:new OpenLayers.Projection("EPSG:900913"),
									externalProjection: new OpenLayers.Projection("EPSG:4326"),
									extractAttributes:true
								}
				 );
				 
				var kmlString=kmlFormat.write(select.features, true);
				
				
				
            });
		map.addControl(control);
		control.activate();

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