protected void GridViewProductCostHistory9_SelectedIndexChanged(object sender, EventArgs e)
{
string urlParams = string.Format("ProductId={0}&StartDate={1}", GridViewProductCostHistory9.SelectedDataKey.Values[0], GridViewProductCostHistory9.SelectedDataKey.Values[1]);
Response.Redirect("ProductCostHistoryEdit.aspx?" + urlParams, true);
}
}