public static void Delete(ObjectId id, string key)
{
try {
if (id.IsErased == false & id.IsEffectivelyErased == false)
{
using (World.Docu.LockDocument()) {
using (Database db = World.Docu.Database) {
using (Transaction tr = db.TransactionManager.StartTransaction()) {
using (BlockReference br = (BlockReference)tr.GetObject(id, OpenMode.ForRead)) {
foreach (ObjectId attributeId in br.AttributeCollection)
{
using (AttributeReference attributeRef = (AttributeReference)tr.GetObject(attributeId, OpenMode.ForRead)) {
if (attributeRef.Tag == key)
{
attributeRef.Erase();
}
}
}
}
tr.Commit();
}
}
}
}
}
catch (System.Exception ex) {
Err.Log(ex);
}
}
private static void ResetAttributes(this BlockReference br, List <AttributeDefinition> attDefs, Transaction tr)
{
Dictionary <string, string> attValues = new Dictionary <string, string>();
foreach (ObjectId id in br.AttributeCollection)
{
if (!id.IsErased)
{
AttributeReference attRef = (AttributeReference)tr.GetObject(id, OpenMode.ForWrite);
attValues.Add(attRef.Tag,
attRef.IsMTextAttribute ? attRef.MTextAttribute.Contents : attRef.TextString);
attRef.Erase();
}
}
foreach (AttributeDefinition attDef in attDefs)
{
AttributeReference attRef = new AttributeReference();
attRef.SetAttributeFromBlock(attDef, br.BlockTransform);
if (attDef.Constant)
{
attRef.TextString = attDef.IsMTextAttributeDefinition ?
attDef.MTextAttributeDefinition.Contents :
attDef.TextString;
}
else if (attValues.ContainsKey(attRef.Tag))
{
attRef.TextString = attValues[attRef.Tag];
}
br.AttributeCollection.AppendAttribute(attRef);
tr.AddNewlyCreatedDBObject(attRef, true);
}
}