public void CreateLayerFilter()
{
_AcAp.Document doc = _AcAp.Application.DocumentManager.MdiActiveDocument;
_AcDb.Database db = doc.Database;
_AcEd.Editor ed = doc.Editor;
_AcLm.LayerFilterTree filterTree = db.LayerFilters;
_AcLm.LayerFilterCollection filters = filterTree.Root.NestedFilters;
// Lets find out about the root filter
ed.WriteMessage(String.Format("\n(Root) Name : {0} Expr : {1}", db.LayerFilters.Root.Name,
db.LayerFilters.Root.FilterExpression)
);
// Lets find out about all the filters
foreach (_AcLm.LayerFilter f in filters)
{
ed.WriteMessage(String.Format("\nName : {0} Expr : {1}", f.Name,
f.FilterExpression)
);
}
// Lets find out about the current filter
if (db.LayerFilters.Current != null)
{
ed.WriteMessage(String.Format("\n(Current) Name : {0} Expr : {1}",
db.LayerFilters.Current.Name,
db.LayerFilters.Current.FilterExpression)
);
}
// Create and add a new layer filter
_AcLm.LayerFilter layerFilter = new _AcLm.LayerFilter();
layerFilter.Name = "MyLyFilter";
layerFilter.FilterExpression = "NAME == \"*Test*\"";
filters.Add(layerFilter);
// Set the changed layer filters tree to the database
db.LayerFilters = filterTree;
}
private static void ImportNestedFilters(
_AcLm.LayerFilter srcFilter,
_AcLm.LayerFilter destFilter,
_AcDb.Database srcDb,
_AcDb.Database destDb,
bool copyLayer,
_AcEd.Editor ed)
{
using (_AcDb.Transaction tr = srcDb.TransactionManager.StartTransaction())
{
_AcDb.LayerTable lt = tr.GetObject(srcDb.LayerTableId, _AcDb.OpenMode.ForRead, false) as _AcDb.LayerTable;
foreach (_AcLm.LayerFilter sf in srcFilter.NestedFilters)
{
_AcDb.IdMapping idmap = new _AcDb.IdMapping();
if (copyLayer)
{
// Get the layers to be cloned to the dest db.
// Only those that are pass the filter
_AcDb.ObjectIdCollection layerIds = new _AcDb.ObjectIdCollection();
foreach (_AcDb.ObjectId layerId in lt)
{
_AcDb.LayerTableRecord ltr = tr.GetObject(layerId, _AcDb.OpenMode.ForRead, false) as _AcDb.LayerTableRecord;
if (sf.Filter(ltr))
{
layerIds.Add(layerId);
}
}
// clone the layers to the dest db
if (layerIds.Count > 0)
{
srcDb.WblockCloneObjects(
layerIds,
destDb.LayerTableId,
idmap,
_AcDb.DuplicateRecordCloning.Replace,
false);
}
}
// Find if a destination database already
// has a layer filter with the same name
_AcLm.LayerFilter df = null;
foreach (_AcLm.LayerFilter f in destFilter.NestedFilters)
{
if (f.Name.Equals(sf.Name))
{
df = f;
break;
}
}
if (df == null)
{
if (sf is _AcLm.LayerGroup)
{
// create a new layer filter group
// if nothing found
_AcLm.LayerGroup sfgroup = sf as _AcLm.LayerGroup;
_AcLm.LayerGroup dfgroup = new _AcLm.LayerGroup();
ed.WriteMessage(string.Format(CultureInfo.CurrentCulture, "\nImportiere Layerfilter-Gruppe {0}.", sf.Name));
dfgroup.Name = sf.Name;
df = dfgroup;
if (copyLayer)
{
_AcLm.LayerCollection lyrs = sfgroup.LayerIds;
foreach (_AcDb.ObjectId lid in lyrs)
{
if (idmap.Contains(lid))
{
_AcDb.IdPair idp = idmap[lid];
dfgroup.LayerIds.Add(idp.Value);
}
}
}
destFilter.NestedFilters.Add(df);
}
else
{
// create a new layer filter
// if nothing found
ed.WriteMessage(string.Format(CultureInfo.CurrentCulture, "\nImportiere Layerfilter {0}.", sf.Name));
df = new _AcLm.LayerFilter();
df.Name = sf.Name;
df.FilterExpression = sf.FilterExpression;
destFilter.NestedFilters.Add(df);
}
}
// Import other filters
ImportNestedFilters(sf, df, srcDb, destDb, copyLayer, ed);
}
tr.Commit();
}
}
