输个不同的类型的值，会报错，

Question

procedure TFstudent.Button2Click(Sender: TObject);
begin
    DM2.ADOstudent.Prior;
end;procedure TFstudent.Button3Click(Sender: TObject);
begin
    DM2.ADOstudent.Next;
end;procedure TFstudent.Button4Click(Sender: TObject);
begin
     DM2.ADOstudent.Last;
end;procedure TFstudent.Button5Click(Sender: TObject);
begin
   DM2.ADOstudent.Delete;
end;procedure TFstudent.Button6Click(Sender: TObject);
begin
   DM2.ADOstudent.Edit
end;procedure TFstudent.Button7Click(Sender: TObject);
begin
     DM2.ADOstudent.Append;
end;procedure TFstudent.Button8Click(Sender: TObject);
begin
        DM2.ADOstudent.Refresh;
  

Answer 1

图看不到代码没有异常判断处理。不知所云