foreach (string fileName in fileNames)
{
if (fileName.EndsWith(
".dwg",
StringComparison.CurrentCultureIgnoreCase
)
)
{
Database db = new Database(false, false);
using (db)
{
try
{
ed.WriteMessage(
"\n\nProcessing file: " + fileName
);
db.ReadDwgFile(fileName, FileShare.ReadWrite, false, "");
int attributesChanged = UpdateAttributesInDatabase(db, blockName, attbName, attbValue, attOriginator, attOriginatorValue);
// Display the results
ed.WriteMessage("\nUpdated {0} instance{1} of " + "attribute {2}.", attributesChanged, attributesChanged == 1 ? "" : "s", attbName);
// Only save if we changed something
if (attributesChanged > 0)
{
db.SaveAs(
fileName,
DwgVersion.Current
);
saved++;
}
processed++;
}
catch (System.Exception ex)
{
ed.WriteMessage("\nProblem processing file: {0} - \"{1}\"", fileName, ex.Message);
problem++;
}
}
}
}
ed.WriteMessage("\n\nSuccessfully processed {0} files, of which {1} had " + "attributes to update and an additional {2} had errors " + "during reading/processing.", processed, saved, problem);
}
private int UpdateAttributesInDatabase(Database db, string blockName, string attbName, string attbValue, string attOriginator, string attOriginatorValue)
{
Document doc =
Application.DocumentManager.MdiActiveDocument;
Editor ed = doc.Editor;
// Get the IDs of the spaces we want to process
// and simply call a function to process each
ObjectId msId, psId;
Transaction tr =
db.TransactionManager.StartTransaction();
using (tr)
{
BlockTable bt = (BlockTable)tr.GetObject(db.BlockTableId, OpenMode.ForRead);
msId = bt[BlockTableRecord.ModelSpace];
psId = bt[BlockTableRecord.PaperSpace];
// Not needed, but quicker than aborting
tr.Commit();
}
int msCount = UpdateAttributesInBlock(msId, blockName, attbName, attbValue);
int psCount = UpdateAttributesInBlock(psId, blockName, attbName, attbValue);
return msCount + psCount;
}
private int UpdateAttributesInBlock(ObjectId btrId, string blockName, string attbName, string attbValue)
{
// Will return the number of attributes modified
int changedCount = 0;
Document doc =
Application.DocumentManager.MdiActiveDocument;
Database db = doc.Database;
Editor ed = doc.Editor;
Transaction tr =
doc.TransactionManager.StartTransaction();
using (tr)
{
BlockTableRecord btr = (BlockTableRecord)tr.GetObject(btrId, OpenMode.ForRead);
// Test each entity in the container...
foreach (ObjectId entId in btr)
{
Entity ent = tr.GetObject(entId, OpenMode.ForRead)
as Entity;
if (ent != null)
{
BlockReference br = ent as BlockReference;
if (br != null)
{
BlockTableRecord bd = (BlockTableRecord)tr.GetObject(br.BlockTableRecord, OpenMode.ForRead);
// ... to see whether it's a block with
// the name we're after
if (bd.Name.ToUpper() == blockName)
{
// Check each of the attributes...
foreach (
ObjectId arId in br.AttributeCollection
)
{
DBObject obj = tr.GetObject(arId, OpenMode.ForRead);
AttributeReference ar = obj as AttributeReference;
if (ar != null)
{
// ... to see whether it has
// the tag we're after
if (ar.Tag.ToUpper() == attbName)
{
// If so, update the value
// and increment the counter
ar.UpgradeOpen();
ar.TextString = attbValue;
ar.DowngradeOpen();
changedCount++;
}
}
}
}
// Recurse for nested blocks
changedCount += UpdateAttributesInBlock(br.BlockTableRecord, blockName, attbName, attbValue);
}
}
}
tr.Commit();
}
return changedCount;
}
}
