RDLC REPORT出错 - 本地报告处理期间发生错误

Question

当我使用RDLC报告时，我遇到了错误......本地报告处理期间发生错误..

ReportViewer1.Reset();
DataTable dt = GetData(Convert.ToDateTime(datefrm), Convert.ToDateTime(dateto), acode, qutono, brcodde);
ReportDataSource rds = new ReportDataSource("DataSet1", dt);

if (dt.Rows.Count > 0)
{
    ReportViewer1.LocalReport.DataSources.Add(rds);
    this.ReportViewer1.ProcessingMode = Microsoft.Reporting.WebForms.ProcessingMode.Local;
    this.ReportViewer1.LocalReport.ReportPath = "Report1.rdlc";

    int n = 5;

    ReportParameter[] parms = new ReportParameter[n];
    parms[0] = new ReportParameter("DateFrom", datefrm);
    parms[1] = new ReportParameter("DateTo", dateto);
    parms[2] = new ReportParameter("Ac_Code", acode);
    parms[3] = new ReportParameter("QuotNo", qutono);
    parms[4] = new ReportParameter("Br_Code", brcodde);
    ReportViewer1.LocalReport.SetParameters(parms);
    ReportViewer1.LocalReport.Refresh();
}