Delphi-ADOTable无法正确删除记录并创建幻像记录

我需要帮助来解决数据库问题。我有一个.mdb文件，其中包含汽车记录。这链接到我的ADOTable，然后链接到Delphi中的DBGrid。当我通过表单上的按钮删除记录时，它似乎无法正确删除，因为当我滚动查看dbgrid时，活动记录应该更改/更新（取决于我是向下滚动还是向上滚动）并显示值活动记录的每个字段在DBGrid下面的编辑中的位置。

我的代码删除记录后，当我在MS Access中查看该记录时，该记录未出现在DBGrid或.mdb文件中，因此我认为已正确删除了该记录。但是，就像我在上面解释的那样，当执行OnMouseWheel事件时，当DBGrid活动记录的指针清楚地表明它应该显示下一个或上一个记录数据时，它会显示我猜测是删除的记录或上一个记录的数据。

有趣的是，OnCellClick和DBGridNavigator按钮对DBGrid和显示的记录信息没有影响。

图片：

在OnMouseWheel事件之前

执行1次后的每个图像：

实际的.mdb文件的图像：

所用程序和功能的代码：

OnMouseWheel：

procedure TCars.DBGrid1MouseWheel(Sender: TObject; Shift: TShiftState; WheelDelta: Integer; 
MousePos: TPoint; var Handled: Boolean);
begin
  Show_Car_Details;
end;

OnCellClick：

procedure TCars.DBGrid1CellClick(Column: TColumn);
begin
  Show_Car_Details;
end;

Show_Car_Details：

procedure TCars.Show_Car_Details;
begin
  with CarOwners.tbl_Cars do
  begin
    edt_Car_ID.text := inttostr(fieldbyname('ID').value);
    edt_Car_Type.text := fieldbyname('Make').value;
    edt_Car_Price.text := FloatToStr(fieldbyname('Price').value);
    edt_Car_Distance.text := inttostr(fieldbyname('Distance').value);
    edt_Owner_ID.text := inttostr(fieldbyname('OwnerID').value);

    if fieldbyname('Insurance').value = true then
    begin
      cbx_Insurance.ItemIndex := 0;
    end
    else
    begin
      cbx_Insurance.ItemIndex := 1;
    end;
  end;
end;

删除过程：

procedure TCars.bit_DeleteClick(Sender: TObject);
begin
  if messagedlg
    ('Are you sure you want to delete this record? It will permanently be removed.',
    mtConfirmation, [mbyes, mbno], 0) <> mryes then
    exit;

  CarOwners.tbl_Cars.Delete;
  DBGrid1.DataSource.DataSet.Refresh;
end;

以防万一，还要为添加和更新过程编写代码： 添加：

procedure TCars.bit_AddClick(Sender: TObject);
var
  Make: string;
  OwnerID, Distance: Integer;
  Price: real;
  Insurance: Boolean;
begin
  Make := edt_Car_Type.text;
  OwnerID := strtoint(edt_Owner_ID.text);
  Distance := strtoint(edt_Car_Distance.text);
  Price := strtofloat(edt_Car_Price.text);
  if cbx_Insurance.ItemIndex = 0 then
  begin
    Insurance := true;
  end
  else
  begin
    Insurance := false;
  end;

  Add_Record(Make, OwnerID, Price, Distance, Insurance);
end;
//---------------------------------------------------------
procedure TCars.Add_Record(Make: string; OwnerID: Integer; Price: real;
  Distance: Integer; Insurance: Boolean);
begin

  // ----validation----
  //validation done here(removed for space, just basic if with exit.)

  // add new information
  with CarOwners do
  begin
    tbl_Cars.DisableControls;
    tbl_Cars.last;
    tbl_Cars.Insert;
    tbl_Cars['Make'] := Make;
    tbl_Cars['OwnerID'] := OwnerID;
    tbl_Cars['Price'] := Price;
    tbl_Cars['distance'] := Distance;
    tbl_Cars['Insurance'] := Insurance;
    tbl_Cars.post;
    tbl_Cars.EnableControls;
  end;
end;

更新步骤：

procedure TCars.bit_UpdateClick(Sender: TObject);
var
  Brand: string;
  Price: real;
  Insurance: Boolean;
  OwnerID, Distance: Integer;
begin
  Brand := edt_Car_Type.text;
  Price := strtofloat(edt_Car_Price.text);
  OwnerID := strtoint(edt_Owner_ID.text);
  Distance := strtoint(edt_Car_Distance.text);

  if cbx_Insurance.ItemIndex = 0 then
  begin
    Insurance := true;
  end
  else
  begin
    Insurance := false;
  end;

  Update_Record(Brand, OwnerID, Price, Distance, Insurance);
end;
//------------------------------------------------------------
procedure TCars.Update_Record(Make: string; OwnerID: Integer; Price: real;
  Distance: Integer; Insurance: Boolean);
begin
  //validation done here(removed for space, just basic if with exit.)

  // ----Update Information ----
  with CarOwners do
  begin
    tbl_Cars.DisableControls;
    tbl_Cars.edit;
    tbl_Cars['Make'] := Make;
    tbl_Cars['OwnerID'] := OwnerID;
    tbl_Cars['Price'] := Price;
    tbl_Cars['Distance'] := Distance;

    if Insurance then
    begin
      tbl_Cars['Insurance'] := true;
    end
    else
    begin
      tbl_Cars['Insurance'] := false;
    end;
    // ShowMessage('Posting...');
    tbl_Cars.post;
    // ShowMessage('Done');
    tbl_Cars.EnableControls;
  end;
end;

欢迎任何建议或协助！！！问候