asp.net中的rdlc报告问题

本文关键字：报告 问题 rdlc 中的 net asp | 更新日期: 2023-09-27 18:04:09

 private void btnGenerate_Click(object sender, EventArgs e)
        {
            try
            {
                if (Convert.ToDateTime(dateTimeTo.Text).Date >= Convert.ToDateTime(dateTimeFrom.Text).Date)
                {
                    DateTime today = DateTime.Today.Date;
                    reportViewer1.RefreshReport();
                    reportViewer1.LocalReport.Refresh();
                    DataTable dtnew = new DataTable();
                    string EmpId = null;
                    if (ddlEmployee.SelectedIndex > 0)
                    {
                        EmpId = ddlEmployee.SelectedValue.ToString();
                    }
                    reportViewer1.LocalReport.DataSources.Clear();
                    dtnew = new dbInOutTimeDatasetTableAdapters.InOutTableAdapter().GetData(Convert.ToDateTime(dateTimeTo.Text), Convert.ToDateTime(dateTimeFrom.Text),new Guid(EmpId));
                    //   dtnew = new dsReportTableAdapters.ReportTableAdapter().GetData(Convert.ToDateTime(dateTimeFrom.Text), Convert.ToDateTime(dateTimeTo.Text), EmpId, DeptId);
                    reportViewer1.Visible = true;
                    ReportDataSource rptds = new ReportDataSource("dbInOutTimeDataset_ReportInOut", dtnew);
                    reportViewer1.LocalReport.DataSources.Add(rptds);
                    reportViewer1.LocalReport.Refresh();
                    reportViewer1.RefreshReport();
                    reportViewer1.Visible = true;
                }
                else
                {
                    MessageBox.Show("To date must be greater or equal to From date.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            }
            catch (InvalidOperationException exI)
            {
                MessageBox.Show("There is no any Employee Absent.", "Information", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
            catch (Exception ex)
            {
                MessageBox.Show("Unhandled Error:" + ex.Message);
            }
        }

问题:无法在Reportviewer中绑定报告。我在"dtnew"中得到记录，但在我的应用程序

中看不到报告

在报告"没有为数据源'dsInOutReport_InOut'提供数据源实例"中获取错误

asp.net中的rdlc报告问题

add this:

reportViewer1.LocalReport.DataSources.clear();

之前:

reportViewer1.LocalReport.DataSources.Add(rptds);

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