public void Dispose()
{
try
{
if (_grids != null)
{
foreach (IGrid grid in _grids)
{
grid.Dispose();
}
_grids.Clear();
}
if (_dataSource != null)
{
_dataSource.DataSourceChanged -= new EventHandler(DataSourceChanged);
_dataSource.Dispose();
_dataSource = null;
}
_currentRuntimeProjecter = null;
_gridDefinition = null;
_limiter = null;
}
finally
{
_disposed = true;
}
}
public FeatureClass(FeatureDataSourceBase dataSource)
{
_gridDefinition = new GridDefinition();
_limiter = new MemoryGridLimiter();
_dataSource = dataSource;
_spatialReference = _dataSource.GetSpatialReference();
InitConstructor();
}
public FeatureClass(string filename)
{
_gridDefinition = new GridDefinition();
_limiter = new MemoryGridLimiter();
_dataSource = new FileDataSource(Path.GetFileNameWithoutExtension(filename), filename);
_spatialReference = _dataSource.GetSpatialReference();
InitConstructor();
}
public static IFeatureClass FromXElement(XElement ele)
{
if (ele == null)
{
return(null);
}
GridDefinition gridDef = GridDefinition.FromXElement(ele.Element("GridDef"));
MemoryGridLimiter limiter = MemoryGridLimiter.FromXElement(ele.Element("MemoryLimiter"));
object ds = PersistObject.ReflectObjFromXElement(ele.Element("DataSource"));
if (ds == null)
{
return(null);
}
FeatureDataSourceBase dataSource = (FeatureDataSourceBase)ds;
return(new FeatureClass(gridDef, limiter, dataSource));
}
public FeatureClass(GridDefinition gridDef, MemoryGridLimiter limiter, FeatureDataSourceBase dataSource)
{
if (gridDef != null)
{
_gridDefinition = gridDef;
}
if (limiter != null)
{
_limiter = limiter;
}
if (dataSource == null)
{
throw new ArgumentNullException("构造VectorFeatureClass对象,\"DataSource\"不能为空。");
}
_dataSource = dataSource;
_dataSource.SetFeatureClass(this);
_spatialReference = _dataSource.GetSpatialReference();
InitConstructor();
}
public static MemoryGridLimiter FromXElement(XElement ele)
{
if (ele == null)
{
return(null);
}
string type = ele.Attribute("type").Value;
enumGridLimitType t = enumGridLimitType.None;
foreach (enumGridLimitType it in Enum.GetValues(typeof(enumGridLimitType)))
{
if (it.ToString() == type)
{
t = it;
break;
}
}
MemoryGridLimiter mgt = new MemoryGridLimiter();
mgt.Count = int.Parse(ele.Attribute("maxcount").Value);
mgt.MaxMemorySize = int.Parse(ele.Attribute("maxmemory").Value);
return(mgt);
}
