Selection Set Filter - Block Name CONTAINS
Hi,
In selction filters, the values of type string honor the wild-card patterns.
new TypedValue(2, "*-SIGN_*");
Dynamic BlockReference cannot be selected by your block name filter, because its name is something like "*Uxxxx". If you want to get a SelectionSet to select block references which could be/include dynamic ones, you should avoid using block name filter. Instead, you identify them after the selectionset is returned and you loop through them in following code.
As @norman.yuan said, you cannot directly filter anonymous blocks (*Uxxx blocks) with a selection filter.
You have to select also all the anoynmous blocks and check for each selected block if the name of its DynamicBlockTableRecord (AKA effective name) matches with your pattern.
Here's an example:
[CommandMethod("TEST1")]
public static void Test1()
{
var ed = Application.DocumentManager.MdiActiveDocument.Editor;
var filter = new SelectionFilter(new[] {
new TypedValue(0, "INSERT"),
new TypedValue(2, "`*U*,*-SIGN-*") });
var psr = ed.GetSelection(filter);
if (psr.Status == PromptStatus.OK)
{
var db = HostApplicationServices.WorkingDatabase;
using (var tr = db.TransactionManager.StartTransaction())
{
var ids = new ObjectIdCollection();
// filter anonymous blocks
foreach (var id in psr.Value.GetObjectIds())
{
var br = (BlockReference)tr.GetObject(id, OpenMode.ForRead);
string effectiveName =
((BlockTableRecord)tr.GetObject(br.DynamicBlockTableRecord, OpenMode.ForRead)).Name;
if (Autodesk.AutoCAD.Internal.Utils.WcMatchEx(effectiveName, "*-SIGN-*", true))
ids.Add(id);
}
var selectedIds = new ObjectId[ids.Count];
ids.CopyTo(selectedIds, 0);
ed.SetImpliedSelection(selectedIds);
tr.Commit();
}
}
}
You can also do this 'on the fly' by handling the Editor.SelectionAdded event:
[CommandMethod("TEST2")]
public static void Test2()
{
var ed = Application.DocumentManager.MdiActiveDocument.Editor;
var filter = new SelectionFilter(new[] {
new TypedValue(0, "INSERT"),
new TypedValue(2, "`*U*,*-SIGN-*") });
ed.SelectionAdded += SelectionAdded;
var psr = ed.GetSelection(filter);
ed.SelectionAdded -= SelectionAdded;
if (psr.Status == PromptStatus.OK)
ed.SetImpliedSelection(psr.Value);
}
private static void SelectionAdded(object sender, SelectionAddedEventArgs e)
{
using (var tr = new OpenCloseTransaction())
{
for (int i = 0; i < e.AddedObjects.Count; i++)
{
var br = (BlockReference)tr.GetObject(e.AddedObjects[i].ObjectId, OpenMode.ForRead);
string effectiveName =
((BlockTableRecord)tr.GetObject(br.DynamicBlockTableRecord, OpenMode.ForRead)).Name;
if (!Autodesk.AutoCAD.Internal.Utils.WcMatchEx(effectiveName, "*-SIGN-*", true))
e.Remove(i);
}
}
}
@David_Prontnicki a écrit :
I belive I need to convert the objectID collection to a selection set. Just not sure how to do that.
If you absolutely need a selection set you can create a new one frolm an ObjetcId array using the SelectionSet.FromObjectIds static method.
Here's an example:
[CommandMethod("TEST1")]
public static void Test1()
{
var ed = Application.DocumentManager.MdiActiveDocument.Editor;
var filter = new SelectionFilter(new[] {
new TypedValue(0, "INSERT"),
new TypedValue(2, "`*U*,*-SIGN-*") });
var psr = ed.GetSelection(filter);
if (psr.Status == PromptStatus.OK)
{
var db = HostApplicationServices.WorkingDatabase;
using (var tr = db.TransactionManager.StartTransaction())
{
var ids = new ObjectIdCollection();
// filter anonymous blocks
foreach (var id in psr.Value.GetObjectIds())
{
var br = (BlockReference)tr.GetObject(id, OpenMode.ForRead);
string effectiveName =
((BlockTableRecord)tr.GetObject(br.DynamicBlockTableRecord, OpenMode.ForRead)).Name;
if (Autodesk.AutoCAD.Internal.Utils.WcMatchEx(effectiveName, "*-SIGN-*", true))
ids.Add(id);
}
// convert the ObjectIdCollection into an ObjectId array
var selectedIds = new ObjectId[ids.Count];
ids.CopyTo(selectedIds, 0);
// convert the ObjectId array into a SelectionSet
var selectionSet = SelectionSet.FromObjectIds(selectedIds);
// grip the selection set
ed.SetImpliedSelection(selectionSet);
tr.Commit();
}
}
}