If the cursor has passed the end of the collection (i.e., when MoveNext returns false), null is returned. If a valid LasPoint is returned by this property, it should be properly disposed through a call to System.IDisposable.Dispose or with the use of a using statement.
// search all points
using (ArcGIS.Core.Data.Analyst3D.LasPointCursor ptCursor = lasDataset.SearchPoints(null))
{
while (ptCursor.MoveNext())
{
using (ArcGIS.Core.Data.Analyst3D.LasPoint point = ptCursor.Current)
{
}
}
}
// search within an extent
ArcGIS.Core.Data.Analyst3D.LasPointFilter pointFilter = new ArcGIS.Core.Data.Analyst3D.LasPointFilter();
pointFilter.FilterGeometry = envelope;
using (ArcGIS.Core.Data.Analyst3D.LasPointCursor ptCursor = lasDataset.SearchPoints(pointFilter))
{
while (ptCursor.MoveNext())
{
using (ArcGIS.Core.Data.Analyst3D.LasPoint point = ptCursor.Current)
{
}
}
}
// search within an extent and limited to specific classification codes
pointFilter = new ArcGIS.Core.Data.Analyst3D.LasPointFilter();
pointFilter.FilterGeometry = envelope;
pointFilter.ClassCodes = new List<int> { 4, 5 };
using (ArcGIS.Core.Data.Analyst3D.LasPointCursor ptCursor = lasDataset.SearchPoints(pointFilter))
{
while (ptCursor.MoveNext())
{
using (ArcGIS.Core.Data.Analyst3D.LasPoint point = ptCursor.Current)
{
}
}
}
// searching on the LasDatasetLayer will honor any LasPointDisplayFilter
// search all points
using (ArcGIS.Core.Data.Analyst3D.LasPointCursor ptCursor = lasDatasetLayer.SearchPoints(null))
{
while (ptCursor.MoveNext())
{
using (ArcGIS.Core.Data.Analyst3D.LasPoint point = ptCursor.Current)
{
}
}
}
// search within an extent
ArcGIS.Core.Data.Analyst3D.LasPointFilter pointFilter = new ArcGIS.Core.Data.Analyst3D.LasPointFilter();
pointFilter.FilterGeometry = envelope;
using (ArcGIS.Core.Data.Analyst3D.LasPointCursor ptCursor = lasDatasetLayer.SearchPoints(pointFilter))
{
while (ptCursor.MoveNext())
{
using (ArcGIS.Core.Data.Analyst3D.LasPoint point = ptCursor.Current)
{
}
}
}
// search within an extent and limited to specific classification codes
pointFilter = new ArcGIS.Core.Data.Analyst3D.LasPointFilter();
pointFilter.FilterGeometry = envelope;
pointFilter.ClassCodes = new List<int> { 4, 5 };
using (ArcGIS.Core.Data.Analyst3D.LasPointCursor ptCursor = lasDatasetLayer.SearchPoints(pointFilter))
{
while (ptCursor.MoveNext())
{
using (ArcGIS.Core.Data.Analyst3D.LasPoint point = ptCursor.Current)
{
}
}
}