我的报表就放了一个子报表,也给子报表指定了数据,但只显示主报表的东西,子报表是空,但跟踪子报表的Datatable是有数据的!下面是我的代码 

#region 生产委托单打印
    /// <summary>
    /// 生产委托单打印
    /// </summary>
    /// <param name="orderId"></param>
    private void ProxySheetPrint(int orderId)
    {
        try
        {
            //主报表
            reportAction.ProxySheetPrint(orderId);
            reportDocument = new ReportDocument();
            reportDocument.Load(Server.MapPath(@"rpt\ProxySheetPrint.rpt"));
            reportDocument.SetDataSource(model.DataTableOrders);
            //子报表
            ProxySheetBasisInfoPrint(orderId);

            CrystalReportViewer1.EnableParameterPrompt = false;
            CrystalReportViewer1.EnableToolTips = false;
            CrystalReportViewer1.ReportSource = reportDocument;
            proxyBl = true;
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.Message);
        }
    }
    #endregion

    #region 生产委托单基本信息报表(子报表)
    /// <summary>
    /// 生产委托单基本信息报表
    /// </summary>
    /// <param name="orderId"></param>
    private void ProxySheetBasisInfoPrint(int orderId)
    {
        try
        {
            reportActio