Create a new tab or window for a web page from ASP.NET

protected void RecentButtonsRepeater_ItemCommand(object source,
    RepeaterCommandEventArgs e)
{
    string code = ((LinkButton)e.Item.Controls[1]).Text;
    string sql = "SELECT RunID FROM ProductionRuns WHERE RunCode = @code";
    SqlConnection sqlconn = new SqlConnection(QCDataPath);
    sqlconn.Open();
    SqlCommand sqlcomm = new SqlCommand(sql, sqlconn);
    sqlcomm.Parameters.AddWithValue("@code", code);
    SqlDataReader sdr = sqlcomm.ExecuteReader();

    sdr.Read();

    int id = sdr.GetInt32(0);

    sdr.Close();
    sqlconn.Close();

    Session["RunID"] = id;
    Server.Transfer("Sheet.aspx");
}

<script type="text/javascript">
    function ReOpenScoreHome() {
        window.open("Scoresheets.aspx", "reopenwindow");
    }
</script>
</head>
<body onload="ReOpenScoreHome()">