c# - AutoCAD eNotOpenForWrite

Question

我正在使用 C#.NET 编写 AutoCAD 插件。我需要一种方法来将 Table.IsReadEnabled 和 Table.IsWriteEnabled 设置为 true。我有一个名为 addRow() 的方法，显示如下:

public void addRow(String[] data)
        {
            OpenCloseTransaction tr = doc.TransactionManager.StartOpenCloseTransaction();
            DocumentLock docLock = doc.LockDocument();
            using (tr)
            using (docLock)
            {
                bool isRead = IsReadEnabled;
                bool isWrite = IsWriteEnabled;

                BlockTable bt = (BlockTable)tr.GetObject(doc.Database.BlockTableId, OpenMode.ForRead);
                BlockTableRecord btr = (BlockTableRecord)tr.GetObject(bt[Autodesk.AutoCAD.DatabaseServices.BlockTableRecord.ModelSpace], OpenMode.ForWrite);

                selectedRow++; //Sets the lowest empty row as the one to be modified

                //Adding data to each cell
                for (int i = 0; i < data.Length; i++)
                {
                    Cells[selectedRow, i].SetValue(data[i], ParseOption.SetDefaultFormat);
                }
                GenerateLayout();

                //Attempting to update database with new data

                btr.AppendEntity(this);
                tr.AddNewlyCreatedDBObject(this, true);

                tr.Commit();

            }
        }

它第一次向我的表添加数据时工作正常，但 tr.Commit 调用将表的 IsReadEnabled 和 IsWriteEnabled 设置为 false即使是 OpenClose 事务。这会导致 AutoCAD 在尝试向表中添加新数据行时崩溃。我需要在 tr.commit 调用后重新启用写入和读取，或者将其设置为永远不会禁用写入和读取。

Answer 1

if (!IsWriteEnabled || !IsReadEnabled) //Committing transactions closes everything for reading and writing so it must be reopened
{
    tr.GetObject(this.ObjectId, OpenMode.ForRead);
    tr.GetObject(this.ObjectId, OpenMode.ForWrite);
}

我只需要添加一个 if 语句!