public void ReRender(OnRenderIsFinishedHandler finishNotify, Image img)
{
_renderFinishedNotify = finishNotify;
using (Graphics g = Graphics.FromImage(img))
{
if (_mapRuntime == null || _mapRuntime.Map == null)
{
g.Clear(Color.White);
return;
}
try
{
_renderArg.BeginRender(g);
_renderArg.IsReRender = true;
g.Clear(_mapRuntime.Map.MapArguments.BackColor);
_mapRuntime.Render(_renderArg);
}
finally
{
_renderArg.EndRender();
//触发渲染完毕的事件通知(异步方式通知)
if (_renderFinishedNotify != null)
{
//_container.BeginInvoke(_renderFinishedNotify);
//BeginInvoke(_renderFinishedNotify);
_renderFinishedNotify = null;
}
}
}
}
