myDefinition.LayerID = 0;
myDefinition.Definition = "BOLGE=1";
System.Collections.ObjectModel.ObservableCollection<LayerDefinition> myObservableCollection2 =
new System.Collections.ObjectModel.ObservableCollection<LayerDefinition>();
myObservableCollection2.Add(myDefinition);
LayerDrawingOptions layerDrawOptions = new LayerDrawingOptions();
layerDrawOptions.LayerID = 0;
layerDrawOptions.Renderer = newClassBreaksRenderer;
dl = Map1.Layers["KazaLayer"] as ArcGISDynamicMapServiceLayer;
dl.LayerDrawingOptions = new LayerDrawingOptionsCollection() { layerDrawOptions };
dl.LayerDefinitions = myObservableCollection2;
(Map1.Layers["KazaLayer"] as ArcGISDynamicMapServiceLayer).Refresh();