protected override Collection <Layer> GetLayersCore(GetLayersParameters getLayersParameters) { Collection <Layer> layers = base.GetLayersCore(getLayersParameters); foreach (var uri in getLayersParameters.LayerUris) { WorldFileInfo wInfo = GetWorldFileInfo(uri); RasterLayer layer = GetRasterLayer(uri, wInfo); if (layer != null) { layer.UpperThreshold = double.MaxValue; layer.LowerThreshold = 0d; layer.Name = Path.GetFileNameWithoutExtension(uri.LocalPath); layer.Open(); if (!layer.HasProjectionText) { string proj4PathFileName = Path.ChangeExtension(uri.LocalPath, "prj"); string proj4Parameter = LayerPluginHelper.GetProj4ProjectionParameter(proj4PathFileName); if (!string.IsNullOrEmpty(proj4Parameter)) { layer.InitializeProj4Projection(proj4Parameter); } } else { string proj = layer.GetProjectionText().Trim(); if (!string.IsNullOrEmpty(proj)) { layer.InitializeProj4Projection(proj); } } layer.Close(); layers.Add(layer); } } return(layers); }