// Summary:
// Add a layer in a shape file
// The name of the layer and display options are specified in the LocalELayer
//
public async Task <IGraphicsLayer> addShpLayer(LayerDef layerDef,
string shpFile, int start = 0, int maxFeatures = 0)
{
if (layerDef == null || shpFile == null)
{
return(null);
}
string filePath = _prj.projDef.LocalFilePath + "\\" + shpFile;
if (File.Exists(filePath))
{
ShapefileTable table = await ShapefileTable.OpenAsync(filePath);
if (table == null)
{
return(null);
}
IS3GraphicsLayer gLayer = await featureTable2GraphicsLayer(
table, start, maxFeatures, true);
if (gLayer == null)
{
return(null);
}
gLayer.ID = layerDef.Name;
setGraphicLayerDisplayOptions(layerDef, gLayer);
_map.Layers.Add(gLayer);
return(gLayer);
}
return(null);
}
private async Task LoadShapefile(string path)
{
try
{
_featureOverlay.Visibility = Visibility.Collapsed;
// open shapefile table
var shapefile = await ShapefileTable.OpenAsync(path);
// clear existing map and spatial reference
if (MyMapView.Map.Layers.Any())
{
MyMapView.Map.Layers.Clear();
MyMapView.Map = new Map();
}
// create feature layer based on the shapefile
var flayer = new FeatureLayer(shapefile)
{
ID = shapefile.Name,
DisplayName = Path.GetFileName(path),
};
// Add the feature layer to the map
MyMapView.Map.Layers.Add(flayer);
ShapefileInfo.DataContext = flayer;
ShapefileInfo.Visibility = Visibility.Visible;
}
catch (Exception ex)
{
var _x = new MessageDialog(ex.Message, "Sample Error").ShowAsync();
ShapefileInfo.Visibility = Visibility.Collapsed;
}
}
private async Task LoadPolygonShapefile(string path)
{
ShapefileTable shapefile = await ShapefileTable.OpenAsync(path);
var flayer = new FeatureLayer(shapefile);
flayer.DisplayName = "面图层";
flayer.ID = "PolygonLayer";
SpatialReference sp = flayer.DefaultSpatialReference;
scene.Layers.Add(flayer);
}
private async Task <LayerData> OpenLayerAsync(string fullPath)
{
var table = await ShapefileTable.OpenAsync(fullPath);
var layer = new FeatureLayer(table)
{
ID = table.Name,
DisplayName = table.Name,
FeatureTable = table
};
LayerData layerData = new LayerData()
{
Layer = layer,
Name = table.Name
};
return(layerData);
}
