public AttributeLayer ImportujAtrybuty(LayerSchema _schema)
        {
            string _fileName = _geometryLayer.FileName;

            AttributeLayer atrybuty = new AttributeLayer(_schema, _fileName);

            atrybuty.ImportujExcel();

            foreach (var atr in atrybuty.Attributes)
            {
                if (atr.ContainsName("X") && atr.ContainsName("Y"))
                {
                    string          x = atr["X"], y = atr["Y"];
                    string          wkt         = string.Format("POINT ({0} {1})", y, x);
                    Geometry        geometry    = Geometry.CreateFromWkt(wkt);
                    string          image       = atr[_schema.AttribKey];
                    GeometryFeature geomFeature = new GeometryFeature {
                        Geometry = geometry, Name = "name", Value = image
                    };
                    _geometryLayer.AddFeature(geomFeature);
                }
            }

            return(atrybuty);
        }
        public override void Wykonaj()
        {
            LayerSchema schemat = _form.Schemat;

            if (schemat == null)
            {
                ShowInfo("Przed importem atrybutów wybierz schemat bazy metadanych.");
                return;
            }

            GeometryLayer zakresy = _form.Zakresy;

            if (zakresy == null)
            {
                ShowInfo("Przed importem atrybutów wczytaj zasięgi.");
                return;
            }

            if (_dialog.ShowDialog(_form) != DialogResult.OK)
            {
                return;
            }

            try
            {
                schemat.Validate();

                AttributeLayer atrybuty = new AttributeLayer(schemat, _dialog.FileName);

                string ext = Path.GetExtension(_dialog.FileName);

                switch (ext.ToLower())
                {
                case ".txt":
                    atrybuty.ImportujTekstowy();
                    break;

                case ".xls":
                    atrybuty.ImportujExcel();
                    break;

                default:
                    break;
                }

                _form.ImportujAtrybuty(atrybuty);
                ShowInfo(atrybuty.ToString() + "\nPrzypisane atrybuty: " + zakresy.Count);
            }
            catch (Exception ex)
            {
                _form.ImportujAtrybuty(null);
                ShowError(ex.Message);
            }

            _form.AktualizujTytul();
        }