[code] 

public void Button1_Click()
        {
            Map1 = (Map)Session["map"];
            
            LayerOverlay dynamicOverlay = (LayerOverlay)Map1.CustomOverlays["StaticOverlay"];
            ShapeFileFeatureLayer provinceLayer = (ShapeFileFeatureLayer)dynamicOverlay.Layers["ProvinceLayer"];
            ShapeFileFeatureLayer divisionLayer = (ShapeFileFeatureLayer)dynamicOverlay.Layers["DivisionLayer"];
            //InMemoryFeatureLayer provinceDivisionLayer = (InMemoryFeatureLayer)dynamicOverlay.Layers["ProvinceDivisionLayer"];


            List<string> featureName = new List<string>();
            //string Provinces = ProvincesList.SelectedValue;
            bool flage1 = false;
            bool flage2 = false;


            foreach (FeatureLayer layer in dynamicOverlay.Layers)
            {

                if (layer == provinceLayer)
                {
                    provinceLayer.Open();
                    Collection<Feature> layerFeatures = provinceLayer.FeatureSource.GetAllFeatures(ReturningColumnsType.AllColumns);
                    provinceLayer.Close();
                    Collection<FeatureSourceColumn> columns = new Collection<FeatureSourceColumn>();
                    foreach (string columnName in layerFeatures[0].ColumnValues.Keys)
                    {
                        columns.Add(new FeatureSourceColumn(columnName));
                    }
                    InMemoryFeatureLayer provinceDivisionLayer = new InMemoryFeatureLayer(columns, new Collection<Feature>() { layerFeatures[0] });
                    provinceDivisionLayer.ZoomLevelSet.ZoomLevel01.CustomStyles.Add(AreaStyles.CreateSimpleAreaStyle(GeoColor.SimpleColors.Transparent, GeoColor.FromArgb(50, GeoColor.SimpleColors.BrightRed)));
                    provinceDivisionLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
                    provinceLayer.Open();
                    Collection<Feature> features = provinceLayer.QueryTools.GetFeaturesByColumnValue("NAME_1", "Punjab");
                    provinceLayer.Close();
                    provinceDivisionLayer.InternalFeatures.Clear();

                    if (features.Count > 0)
                    {
                        Map1.CurrentExtent = features[0].GetBoundingBox();

                        divisionLayer.Open();
                        Collection<Feature> divisionFeatures = divisionLayer.QueryTools.GetFeaturesWithin(features[0], ReturningColumnsType.AllColumns);
                        divisionLayer.Close();


                        foreach (Feature feature in features)
                        {
                            provinceDivisionLayer.InternalFeatures.Add(feature);
                            featureName.Add(feature.ColumnValues["NAME_1"]);
                            //TextBox1.Text += featureName;
                        }
                        flage1 = true;
                        if (i > 0)
                        {
                            dynamicOverlay.Layers.Remove("ProvinceDivisionLayer");
                        }

                        dynamicOverlay.Layers.Add("ProvinceDivisionLayer", provinceDivisionLayer);
                        i++;
                        break;
                    }

                }
                else if (layer == divisionLayer)
                {

                    divisionLayer.Open();
                    Collection<Feature> layerFeatures = divisionLayer.FeatureSource.GetAllFeatures(ReturningColumnsType.AllColumns);
                    divisionLayer.Close();
                    Collection<FeatureSourceColumn> columns = new Collection<FeatureSourceColumn>();
                    foreach (string columnName in layerFeatures[0].ColumnValues.Keys)
                    {
                        columns.Add(new FeatureSourceColumn(columnName));
                    }
                    InMemoryFeatureLayer provinceDivisionLayer = new InMemoryFeatureLayer(columns, new Collection<Feature>() { layerFeatures[0] });
                    provinceDivisionLayer.ZoomLevelSet.ZoomLevel01.CustomStyles.Add(AreaStyles.CreateSimpleAreaStyle(GeoColor.SimpleColors.Transparent, GeoColor.FromArgb(50, GeoColor.SimpleColors.BrightRed)));
                    provinceDivisionLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;

                    divisionLayer.Open();
                    Collection<Feature> divisionFeatures = divisionLayer.QueryTools.GetFeaturesByColumnValue("NAME_2", "Lahore");
                    divisionLayer.Close();
                    provinceDivisionLayer.InternalFeatures.Clear();

                    if (divisionFeatures.Count > 0)
                    {
                        Map1.CurrentExtent = divisionFeatures[0].GetBoundingBox();
                        provinceDivisionLayer.InternalFeatures.Clear();
                        foreach (Feature feature in divisionFeatures)
                        {
                            provinceDivisionLayer.InternalFeatures.Add(feature);
                            featureName.Add(feature.ColumnValues["NAME_2"]);
                            //TextBox1.Text += featureName;
                        }
                        flage2 = true;
                        if (i > 0)
                        {
                            dynamicOverlay.Layers.Remove("ProvinceDivisionLayer");
                        }
                        dynamicOverlay.Layers.Add("ProvinceDivisionLayer", provinceDivisionLayer);
                        i++;
                        break;
                    }

                }
           }
            InMemoryFeatureLayer provincedivisionLayer = (InMemoryFeatureLayer)dynamicOverlay.Layers["ProvinceDivisionLayer"];

            if (provincedivisionLayer.InternalFeatures.Count() > 0)
            {
                //--------------populate data on map---------------------------//
               // provincedivisionLayer.ZoomLevelSet.ZoomLevel01.CustomStyles.Add(TextStyles.CreateSimpleTextStyle("Test", "Arial", 10, DrawingFontStyles.Regular, GeoColor.StandardColors.Red, 0, -12));
                //provincedivisionLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
                //provincedivisionLayer.DrawingMarginPercentage = 50;

                //// -----------event rigistertom  for custom data usage--------------------//
                //provincedivisionLayer.FeatureSource.CustomColumnFetch += new EventHandler<CustomColumnFetchEventArgs>(FeatureSource_CustomColumnFetch);
                //provincedivisionLayer.ZoomLevelSet.ZoomLevel01.DefaultAreaStyle.RequiredColumnNames.Add("Test");

                //-------------------------------end------------------------------------------//

                //-------------- apply value style-----------------------//


                int featureCount = provincedivisionLayer.InternalFeatures.Count();
                Collection<GeoColor> colorsInFamily = GeoColor.GetColorsInHueFamily(GeoColor.StandardColors.Green, featureCount);
                ValueStyle valueStyle = new ValueStyle();

                if (flage1 == true)
                {
                    //int featureCount = provinceDivisionLayer.InternalFeatures.Count();
                   // TextBox2.Text = featureCount.ToString();

                    valueStyle.ColumnName = "NAME_1";


                    valueStyle.ValueItems.Add(new ValueItem(featureName[0], new AreaStyle(new GeoSolidBrush(GeoColor.StandardColors.LightGreen))));
                    for (int j = 0; j < featureCount; j++)
                    {
                        //valueStyle.ValueItems.Add(new ValueItem(featureName[j], new AreaStyle(new GeoSolidBrush(colorsInFamily[j]))));

                    }


                }

                //--------------------------------end----------------------------------------------------------//
                else if (flage2 == true)
                {

                    //TextBox2.Text = featureCount.ToString();
                    valueStyle.ColumnName = "NAME_2";
                    //valueStyle.ValueItems.Add(new ValueItem(featureName[0], new AreaStyle(new GeoSolidBrush(GeoColor.StandardColors.LightGreen))));  
                    for (int j = 1; j < featureCount; j++)
                    {
                        valueStyle.ValueItems.Add(new ValueItem(featureName[j], new AreaStyle(new GeoSolidBrush(colorsInFamily[j]))));

                    }


                }
                provincedivisionLayer.ZoomLevelSet.ZoomLevel01.CustomStyles.Clear();
                provincedivisionLayer.ZoomLevelSet.ZoomLevel01.CustomStyles.Add(valueStyle);
                provincedivisionLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
                dynamicOverlay.Layers.Add(provincedivisionLayer);
                //dynamicOverlay.Redraw();
                
                
            }

        }





[/code]