第一步：新建数据集
第二步：新建模板，添加数据集
第三步：新建Form窗体，拖入ReportViewer控件
第四步：加载之前建立的模板文件
最后一步：赋值
源代码如下：
private void FormWWLHZ2_Load(object sender, EventArgs e) { this.panel2.Tag = 9999; dateTimePicker1.Value = dateTimePicker1.Value.AddMonths(+1); DateTime Date1 = dateTimePicker1.Value; string Title = this.dateTimePicker1.Text + "物料需求采购计划-无料号"; DataTable dtWWLHZ = BLL.WLCG.GetWWLHZData(Date1); if (dtWWLHZ.Rows.Count > 0) { foreach (DataRow dr in dtWWLHZ.Rows) { if (dr["SYB"].ToString().Contains("TFT")) { if (BLL.WLCG.GetWWLHZforWLDL(dr["WLDL"].ToString()).Rows.Count > 0) BLL.WLCG.UpdateWWLHZTFT(dr["WLDL"].ToString(), dr["DW"].ToString(), dr["CGSL"].ToString(), dr["CGJE"].ToString(), "", "", "", "", "", ""); else BLL.WLCG.AddWWLHZ(dr["WLDL"].ToString(), dr["DW"].ToString(), dr["CGSL"].ToString(), dr["CGJE"].ToString(), "", "", "", "", "", ""); } else if (dr["SYB"].ToString().Contains("重庆")) { if (BLL.WLCG.GetWWLHZforWLDL(dr["WLDL"].ToString()).Rows.Count > 0) BLL.WLCG.UpdateWWLHZCQ(dr["WLDL"].ToString(), dr["DW"].ToString(), "", "", "", "", dr["CGSL"].ToString(), dr["CGJE"].ToString(), "", ""); else BLL.WLCG.AddWWLHZ(dr["WLDL"].ToString(), dr["DW"].ToString(), "", "", "", "", dr["CGSL"].ToString(), dr["CGJE"].ToString(), "", ""); } else if (dr["SYB"].ToString().Contains("车载")) { if (BLL.WLCG.GetWWLHZforWLDL(dr["WLDL"].ToString()).Rows.Count > 0) BLL.WLCG.UpdateWWLHZCZ(dr["WLDL"].ToString(), dr["DW"].ToString(), "", "", dr["CGSL"].ToString(), dr["CGJE"].ToString(), "", "", "", ""); else BLL.WLCG.AddWWLHZ(dr["WLDL"].ToString(), dr["DW"].ToString(), "", "", dr["CGSL"].ToString(), dr["CGJE"].ToString(), "", "", "", ""); } else { if (BLL.WLCG.GetWWLHZforWLDL(dr["WLDL"].ToString()).Rows.Count > 0) BLL.WLCG.UpdateWWLHZYF(dr["WLDL"].ToString(), dr["DW"].ToString(), "", "", "", "", "", "", dr["CGSL"].ToString(), dr["CGJE"].ToString()); else BLL.WLCG.AddWWLHZ(dr["WLDL"].ToString(), dr["DW"].ToString(), "", "", "", "", "", "", dr["CGSL"].ToString(), dr["CGJE"].ToString()); } } dt = BLL.WLCG.GetWWLHZ(); BLL.WLCG.DelWWLHZ(); this.reportViewer1.RefreshReport(); reportViewer1.LocalReport.DataSources.Clear(); List para = new List(); para.Add(new Microsoft.Reporting.WinForms.ReportParameter("V_BUTXT", Title)); reportViewer1.LocalReport.SetParameters(para); reportViewer1.LocalReport.DataSources.Add(new ReportDataSource("DataSet2", dt)); reportViewer1.Refresh(); this.reportViewer1.RefreshReport(); } }效果图：