表格更改后GridView不更新

Question

the below code is what i've written to populate a gridview with the values from the oracle database when i click a button. the problem im facing is that, when i delete rows in the table from "sqlplus" manually and then click the button it is still showing the values that i enterd previously and not an empty grid.im quite new to gridview so please help me out

protected void Button1_Click(object sender, EventArgs e)
{
    string v =System.Configuration.ConfigurationManager.ConnectionStrings["harish"].ConnectionString;
    con = new OracleConnection(v);
    con.Open(); 
    cmd = new OracleCommand("select *  from leave_module1 order by name", con);
    dr = cmd.ExecuteReader();

    GridView1.DataSource=dr;
    GridView1.DataBind();
    con.Close();
    dr.Close();




}

Answer 1

You must fire a commit after you delete rows in sqlplus.

If you delete and run a select, you won't see any rows in that session. But your rows are not really deleted yet.

They will be deleted from the actual table only after you ask sqlplus to commit your changes.

This is needed cause oracle doesn't auto-commit by default.