//set deployment periods
protected void Set_current_deployment_periods()
{
DataTable dt = Guard_deployment.Select_active_deployment_period("select_active_deployment_period");
if (dt.Rows.Count > 0)
{
DataRow dtRow = dt.Rows[0];
SystemConst._active_deployment_id = Convert.ToInt32(dtRow["deploy_id"].ToString()).ToString();
SystemConst._deployment_start_date = Convert.ToDateTime(dtRow["deploy_start_date"]);
SystemConst._deployment_end_date = Convert.ToDateTime(dtRow["deploy_end_date"]);
}
}