使用GridView直接编辑更新数据时，出现一个让我迷惑的问题：

GridView编辑更新后绑定的数据仍是未更新前的数据，而再次点击编辑时才显示更新后的数据，但当后台数据是Oracle时，却不会发生这种情况，这是为什么？

protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
　　conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" + base.Request.PhysicalApplicationPath + ConfigurationManager.AppSettings["AccessFile"]);

　　string sqlstr = "update ComputerList set Machine_ID='"
                + ((TextBox)GridView1.Rows[GridView1.EditIndex].Cells[1].Controls[0]).Text + "' where Computer_Name='"
                + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";

　　conn.Open();

　　cmd = new OleDbCommand(sqlstr, conn);
　　cmd.ExecuteNonQuery();

　　GridView1.EditIndex = -1;
　　bind(Session["GetDataSQL"].ToString());
}

public void bind(string GetDataSQL)
{
　　string connStr = "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" + base.Request.PhysicalApplicationPath + ConfigurationManager.AppSettings["AccessFile"];

　　conn = new OleDbConnection(connStr);
　　conn.Open();

　　ds = this.StoneFunction.GetDSFromAccess(GetDataSQL, conn);

　　DataView view = ds.Tables[0].DefaultView;
　　GridView1.DataSource = view;

　　GridView1.DataKeyNames = new string[] { "Computer_Name" };
　　GridView1.DataBind();
　　conn.Close();
}

public override void VerifyRenderingInServerForm(Control control)
{

}