//------------------------------------------------------------

    protected void UpdateLayerList()

    {                        

        // get the count of layers on the map       

        int layerCount = ScubaMap.GetShapeLayerCount();

        // check to see if the baselayer has loaded

        if (ScubaMap.GetShapeLayerByIndex(0).DataLoaded)

        {

            // if loaded, change the title to friendly.

            ScubaMap.GetShapeLayerByIndex(0).Title = "Base Layer";

        }        

        // iterate through the map layers, adding the layers to layerList

        for (int i = 0; i < layerCount; i++)

        {

            // First, check if the LayerList contains the current layer

            // if LayerList does not contain the layer, 

            if (!LayerList.Contains(ScubaMap.GetShapeLayerByIndex(i)))

            {                

                // Check to see if current layer is loaded; if yes, add to LayerList, if not 

                // do nothing, we'll get it the next time.

                if (ScubaMap.GetShapeLayerByIndex(i).DataLoaded)

                {

                    LayerList.Add(ScubaMap.GetShapeLayerByIndex(i));

                }

            }

        }

        // rebind

        Grid1.DataBind();       

    }