C#CAD二次开发开发中要查询一个对象是否OpenMode.ForWrite的代码？

以下是一个示例代码，用于查询一个对象是否OpenMode.ForWrite：

using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.Runtime;

public void CheckObjectOpenMode(ObjectId objectId)
{
    Document doc = Application.DocumentManager.MdiActiveDocument;
    Editor editor = doc.Editor;
    Database database = doc.Database;

    // 判断对象是否存在
    if (objectId.IsNull || !objectId.IsValid)
    {
        editor.WriteMessage("\nInvalid object ID.");
        return;
    }

    // 判断对象类型
    if (objectId.ObjectClass != RXClass.GetClass(typeof(BlockReference)) && objectId.ObjectClass != RXClass.GetClass(typeof(Entity)))
    {
        editor.WriteMessage("\nInvalid object type.");
        return;
    }

    // 获取打开模式
    OpenMode openMode = OpenMode.ForRead;
    if (objectId.ObjectClass == RXClass.GetClass(typeof(BlockReference)))
    {
        BlockReference blockRef = (BlockReference)database.TransactionManager.GetObject(objectId, OpenMode.ForRead);
        if (blockRef != null)
        {
            openMode = blockRef.GetOpenMode();
        }
    }
    else if (objectId.ObjectClass == RXClass.GetClass(typeof(Entity)))
    {
        Entity entity = (Entity)database.TransactionManager.GetObject(objectId, OpenMode.ForRead);
        if (entity != null)
        {
            openMode = entity.GetOpenMode();
        }
    }

    // 判断打开模式
    if (openMode != OpenMode.ForWrite)
    {
        editor.WriteMessage("\nThe object is not open for write.");
    }
    else
    {
        editor.WriteMessage("\nThe object is open for write.");
    }
}

这段代码首先判断对象是否存在和类型是否正确，然后通过GetObject方法打开对象，获取其打开模式，最后判断打开模式是否为OpenMode.ForWrite。