如何在水晶报表添加过滤条件

protected void Page_Load(object sender, EventArgs e)
    {
       
        if (!IsPostBack)
        {
            //数据库链接开始
            Conn c = new Conn();
            c.SetConnect();
            //数据库链接结束
            //定义DataTable开始
            DataTable dt = new DataTable();
            DateOperate dop = new DateOperate();
            //定义DataTable结束
            string str;
            str = "Select FNumber AS 客户编号," +
                " FName AS 客户名称" +
                " From T_Customer";
            //myReport.SetParameterValue(, 17);
            
            //if (dt.ParentRelations.Text.Trim() != "")
            
            dt = dop.GetDataTable(str);
            
            if (dt.Rows.Count == 0)
            {
                dt.Rows.Add();
            }
            //打印到水晶报表
            CrystalReportSource1.ReportDocument.SetDataSource(dt);
            CrystalReportSource1.DataBind();
            Crv.DataBind();
        }

补充：.NET技术 ,  ASP.NET