public bool ExportCurrentMap(object ownerViewModel)
{
FileDialogResult result = _dialogService.ShowSaveFileDialog("Export Map", ownerViewModel, new FileType("PNG image", ".png"));
if (result.IsValid)
{
GMapControl mapControl = System.Windows.Application.Current.MainWindow.FindVisualDescendants <GMapControl>().FirstOrDefault();
if (mapControl == null)
{
throw new InvalidOperationException();
}
var encoder = new PngBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create((BitmapSource)mapControl.ToImageSource()));
using (var file = File.Create(result.FileName))
encoder.Save(file);
return(true);
}
return(false);
}