C# 以编程方式将表格（左下）添加到Autocad 2015中的（0,0,0）

这是我的程序，用于打开excel表并在所提到的点以编程方式创建。当我指定（0,0）时，它会添加左上角。但我想要左下角。代码是什么

这是我的节目

[CommandMethod("exl")]
static public void TableFromSpreadsheet()
{
    const string dlName = "Excel to Autocad";
    var doc = Application.DocumentManager.MdiActiveDocument;
    var db = doc.Database;
    var ed = doc.Editor;
    var ofd = new OpenFileDialog("Select Excel Spreadsheet to Link", null, "xls; xlsx", "ExcelFileToLink", OpenFileDialog.OpenFileDialogFlags.DoNotTransferRemoteFiles);
    var dr = ofd.ShowDialog();
    if (dr != System.Windows.Forms.DialogResult.OK)
        return;
    ed.WriteMessage("\nFile selected was \"{0}\". Contains these sheets:", ofd.Filename);
    var sheetNames = GetSheetNames(ofd.Filename);
    if (sheetNames.Count == 0)
    {
        ed.WriteMessage("\nWorkbook doesn't contain any sheets.");
        return;
    }
    for (int i = 0; i < sheetNames.Count; i++)
    {
        var name = sheetNames[i];
        ed.WriteMessage("\n{0} - {1}", i + 1, name);
    }
    var pio = new PromptIntegerOptions("\nSelect a sheet");
    pio.AllowNegative = false;
    pio.AllowZero = false;
    pio.DefaultValue = 1;
    pio.UseDefaultValue = true;
    pio.LowerLimit = 1;
    pio.UpperLimit = sheetNames.Count;
    var pir = ed.GetInteger(pio);
    if (pir.Status != PromptStatus.OK)
        return;
    var ppr = ed.GetPoint("\nEnter table insertion point");
    if (ppr.Status != PromptStatus.OK)
        return;
    var dlm = db.DataLinkManager;
    var dlId = dlm.GetDataLink(dlName);
    if (dlId != ObjectId.Null)
    {
        dlm.RemoveDataLink(dlId);
    }
    var dl = new DataLink();
    dl.DataAdapterId = "AcExcel";
    dl.Name = dlName;
    dl.Description = "Excel 2 Autocad";
    dl.ConnectionString = ofd.Filename + "!" + sheetNames[pir.Value - 1];
    dl.DataLinkOption = DataLinkOption.PersistCache;
    dl.UpdateOption |= (int)UpdateOption.AllowSourceUpdate;
    dlId = dlm.AddDataLink(dl);
    using (var tr = doc.TransactionManager.StartTransaction())
    {
        tr.AddNewlyCreatedDBObject(dl, true);
        var bt = (BlockTable)tr.GetObject(db.BlockTableId, OpenMode.ForRead);
        var tb = new Table();
        tb.TableStyle = db.Tablestyle;
        tb.Position = ppr.Value;
        tb.Cells.SetDataLink(dlId, true);
        tb.GenerateLayout();
        var btr = (BlockTableRecord)tr.GetObject(db.CurrentSpaceId, OpenMode.ForWrite);
        btr.AppendEntity(tb);
        tr.AddNewlyCreatedDBObject(tb, true);
        tr.Commit();
    }

[CommandMethod（“exl”）]
静态公共void TableFromSpreadsheet（）
{
常量字符串dlName=“Excel到Autocad”；
var doc=Application.DocumentManager.MdiActiveDocument；
var db=文档数据库；
var ed=文档编辑器；
var ofd=新建OpenFileDialog（“选择要链接的Excel电子表格”，null，“xls；xlsx”，“ExcelFileToLink”，OpenFileDialog.OpenFileDialogFlags.DoNotTransferRemoteFiles）；
var dr=ofd.ShowDialog（）；
if（dr！=System.Windows.Forms.DialogResult.OK）
返回；
ed.WriteMessage（“\n所选文件为\“{0}\”。包含以下工作表：”，ofd.Filename）；
var sheetNames=GetSheetNames（ofd.Filename）；
如果（sheetNames.Count==0）
{
ed.WriteMessage（“\n工作簿不包含任何工作表。”）；
返回；
}
对于（int i=0；i

---

}

您可以尝试这种扩展方法（没有更多的时间来测试它…）

//
///重新计算左下角坐标的位置。
///必须在GenerateLayout（）之后调用。
/// 
///表对象
///左下角所需位置
public static void MoveToBottomLeft（此表待定，Point3d bottomLeft）
{
Point3d maxPoint=tbl.Bounds.Value.maxPoint；//这是左下角（最小点）
Point3d topLeft=新的Point3d（maxPoint.Y，bottomLeft.Y，bottomLeft.Z）；//这应该是topLeft
Point3d newPosition=bottomLeft.TransformBy（Matrix3d.Displacement（bottomLeft.getvectoro（newPosition））；//将bottomLeft移动到newPosition
tbl.Position=newPosition；//应用新位置
}

我相信这个位置是固定的，您需要在GenerateLayout之后使用BoundingBox重新计算位置。如果您能向我解释一下BoundingBox，我会很高兴的。提前感谢！！！谢谢你的时间！！再一次

/// <summary>
/// Recalculate the position for a bottom left coordinate.
/// Must be called after GenerateLayout().
/// </summary>
/// <param name="tbl">Table object</param>
/// <param name="bottomLeft">Bottom Left desired position</param>
public static void MoveToBottomLeft(this Table tbl, Point3d bottomLeft)
{
  Point3d maxPoint = tbl.Bounds.Value.MaxPoint; // this is the bottom left (min point)
  Point3d topLeft = new Point3d(maxPoint.Y, bottomLeft.Y, bottomLeft.Z); // this should be topLeft
  Point3d newPosition = bottomLeft.TransformBy(Matrix3d.Displacement(bottomLeft.GetVectorTo(newPosition))); // move bottomLeft to newPosition
  tbl.Position = newPosition; // apply the new position
}