private void DoReadGrid(object state)
{
TaskState taskstate = state as TaskState;
if (taskstate.FeatureClass.Disposed || taskstate.FeatureClass.DataSource == null)
{
return;
}
bool isLoaded = false;
try
{
IGridReader reader = taskstate.FeatureClass.DataSource as IGridReader;
IGrid grid = null;
if (!reader.IsReady)
{
reader.BeginRead();
}
grid = reader.ReadGrid(taskstate.GridNo);
if (grid != null)
{
taskstate.FeatureClass.AddGrid(grid);
isLoaded = true;
}
}
catch (Exception ex)
{
Log.WriterException("RuntimeExchanger", "DoReadGrid", ex);
}
finally
{
if (taskstate.FeatureClass.DataSource != null)
{
if (isLoaded)
{
(taskstate.FeatureClass.DataSource as IFeatureDataSource).GridStateIndicator.Flaged(taskstate.GridNo);
}
else//read grid is failed,next time to read
{
(taskstate.FeatureClass.DataSource as IFeatureDataSource).GridStateIndicator.UnFlaged(taskstate.GridNo);
}
}
Interlocked.Decrement(ref _readingTaskCount);
if (isLoaded && _autoRefreshWhileFinishOneGrid)
{
_mapRefresh.ReRender();
}
if (_asyncDataArrivedNotify != null)
{
_asyncDataArrivedNotify.SomeDataIsArrived();
}
//int n = taskstate.FeatureClass.Grids != null ? taskstate.FeatureClass.Grids.Length : 0;
//Console.WriteLine("Finished:" + n.ToString());
}
}
