private void Add_Click(object sender, EventArgs e) { OpenFileDialog.Filter = "All formats|*.mif;*.txt;*.grd|Layers (*.mif)|*.mif|Grid files (*.grd)|*.grd|Geopoints file (*.txt)|*.txt"; if (OpenFileDialog.ShowDialog() == System.Windows.Forms.DialogResult.OK) { if (OpenFileDialog.FileName != null) { try { bool isExistName = true; for (int i = 0; i < map.LayersCount; i++) { if (map.Layers[i].Name == System.IO.Path.GetFileNameWithoutExtension(OpenFileDialog.FileName)) { isExistName = false; } } if (isExistName) { if (Path.GetExtension(OpenFileDialog.FileName) == ".mif") { VectorLayer MifLayer = new VectorLayer(); map.AddLayer(MifLayer); MifLayer.LoadFromFile(OpenFileDialog.FileName); } if (Path.GetExtension(OpenFileDialog.FileName) == ".txt") { VectorLayer vectorLayer = new VectorLayer(); map.AddLayer(vectorLayer); vectorLayer.LoadFromFile(OpenFileDialog.FileName); } if (Path.GetExtension(OpenFileDialog.FileName) == ".grd") { GridLayer gridLayer = new GridLayer(new GridGeometry(), map); map.AddLayer(gridLayer); gridLayer.LoadFromFile(OpenFileDialog.FileName); } map.ZoomToAll(); map.Refresh(); LayerControl.RefreshList(); } else { MessageBox.Show("Слой с таким именем уже существует."); } isExistName = true; } catch (Exception ex) { MessageBox.Show("Error: Could not read file from disk. Original error: " + ex.Message); } } } }