ASP.NET

protected void datalist_editcommand(object source, DataListCommandEventArgs e)
    {
        DataList1.EditItemIndex = e.Item.ItemIndex;
        DataList1.DataBind();
    }
    protected void datalist_cancelcommand(object source, DataListCommandEventArgs e)
    {
        DataList1.EditItemIndex = -1;
        DataList1.DataBind();
    }
    //updating datalist
    protected void datalist_updatecommand(object source, DataListCommandEventArgs e)
    {
        int stid = Convert.ToInt32(DataList1.DataKeys[e.Item.ItemIndex]);
        TextBox firstname = (TextBox)e.Item.FindControl("txtfirst");
        TextBox lastname = (TextBox)e.Item.FindControl("txtlast");
        FileUpload picupload = (FileUpload)e.Item.FindControl("FileUpload1");
        string filename=Path.GetFileName(picupload.FileName);
        picupload.SaveAs(Server.MapPath("~/pic/")+filename);
        SqlConnection con=new SqlConnection(connectionstring);
        string sqlup = "update stt set stname=@stname,stlastname=@stlastname,picture=@picture where stid=@stid";
        SqlCommand com = new SqlCommand(sqlup, con);
        com.Parameters.AddWithValue("@stid", stid);
        com.Parameters.AddWithValue("@stname", firstname.Text);
        com.Parameters.AddWithValue("@stlastname", lastname.Text);
        com.Parameters.AddWithValue("@picture","~/pic/"+filename);
        con.Open();
        com.ExecuteNonQuery();
        con.Close();
        DataList1.EditItemIndex = -1;
        DataList1.DataBind();
       
    }
    //deleting a record of datalist
    protected void datalist_deletecommand(object source, DataListCommandEventArgs e)
    {
        int stid = Convert.ToInt32(DataList1.DataKeys[e.Item.ItemIndex]);
        SqlConnection con=new SqlConnection(connectionstring);
        string sqldel = "delete from stt where stid=@stid";
        SqlCommand com = new SqlCommand(sqldel, con);
        com.Parameters.AddWithValue("@stid", stid);
        con.Open();
        com.ExecuteNonQuery();
        con.Close();
        DataList1.DataBind();

    }

function CloseNupdateWindow()
    {
        if ( window.opener && window.opener.closed )
        {
	 //Need To Redirect or Refresh MyPage     
	}
    else
    {
        //This is Case1. MySecond page update MyPage when its closing
        window.opener.location.href = window.opener.location.href;

         if (window.opener.progressWindow)
         {
            window.opener.progressWindow.close()
         }
         window.close();
    }
        
    }