datagridview1在form1窗体中，form2窗体有对Access数据库进行改写的button1，我能够做到点击button1之后对数据库插入一条新的数据，可是form1中的datagridview1控件却没有即时对我插入的数据进行更新。我用的代码如下：

OleDbConnection officer_connection = new OleDbConnection();
                officer_connection.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=officer.mdb";
        Form1 myForm1 = new Form1();//实例化form1窗体
                    officer_connection.Open();
                    OleDbCommand upd_command = new OleDbCommand("select * from 员工信息",officer_connection);
                    OleDbDataAdapter officer_adapeter = new OleDbDataAdapter();
                    officer_adapeter.SelectCommand = upd_command;
                    DataSet mydataset = new DataSet();
                    officer_adapeter.Fill(mydataset,"员工信息");               
                    myForm1.dataGridView1.DataSource = mydataset.Tables["员工信息"] ;                   
                    officer_connection.Close();
                    upd_command.Dispose();

还请高手指点如何修改或者如何做？