哪位高手有C#winfrom 基于模板导出Excel的代码

[wx_rdlsoft]

C# winfrom 基于模板导出Excel的代码
网上找了好多代码都不行，请老鸟们不吝指教。

[闭着眼刷牙]

reportview控件里有现成的导出

[全栈极简]

参考：

public void KJBExcel1()
        {
            try
            {
                //打开一个excel对象
                Microsoft.Office.Interop.Excel.Application app = new Microsoft.Office.Interop.Excel.Application();
                Microsoft.Office.Interop.Excel.Workbooks wbs = app.Workbooks;
                Microsoft.Office.Interop.Excel.Workbook wb = wbs.Add(System.Windows.Forms.Application.StartupPath + @"\Temp\xxx\yyy数据统计表.xls");
                //获取一个工作表
                Microsoft.Office.Interop.Excel.Worksheet ws = (Microsoft.Office.Interop.Excel.Worksheet)wb.Worksheets["1-2"];

                //查询数据库
                DBHelper dbh = new DBHelper();

                XmlDocument xmlDoc = new XmlDocument();
                xmlDoc.Load(AppDomain.CurrentDomain.SetupInformation.ApplicationBase + "KJBExcel1.xml");
                XmlNodeList nodeList = xmlDoc.SelectSingleNode("titles").ChildNodes;

                string sql = "select distinct t_month,t_year from timeinterval order by t_year";
                DataSet ds2 = dbh.GetList(sql);
                if (ds2.Tables[0].Rows.Count != 0)
                {
                    foreach (DataRow dr in ds2.Tables[0].Rows)
                    {
                        Range rang = ws.get_Range("A1", "A1");
                        string date = dr["t_year"].ToString() + "年" + dr["t_month"].ToString() + "月";
                        title = date + "份xxx数据统计表";
                        rang.set_Value(Type.Missing, title);//文件名

                        rang = ws.get_Range("G3", "G3");
                        string time = "统计时段：" + date + "1日-" + DateTime.Parse(date).AddMonths(1).AddDays(-1).ToString("yyyy年M月dd日");
                        rang.set_Value(Type.Missing, time);

                        rang = ws.get_Range("H31", "H31");
                        string time2 = "填报时间：" + DateTime.Parse(date).AddMonths(1).ToString("yyyy年M月") + "1日";
                        rang.set_Value(Type.Missing, time2);
                        foreach (XmlNode xn in nodeList)
                        {
                            XmlElement xe = (XmlElement)xn;
                            string sql2 = xe["SQL"].InnerText;
                            sql2 = sql2.Replace("$t_month$", dr["t_month"].ToString().Trim());
                            sql2 = sql2.Replace("$t_year$", dr["t_year"].ToString().Trim());
                            DataSet ds = dbh.GetList(sql2);
                            Dictionary<string, string> dic = new Dictionary<string, string>();
                            if (ds.Tables[0].Rows.Count != 0)
                            {
                                for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
                                {
                                    string key = ds.Tables[0].Rows[i][2].ToString();
                                    string value = ds.Tables[0].Rows[i][1].ToString();
                                    dic.Add(key, value);
                                }
                            }

                            foreach (string key in dic.Keys)
                            {

                                foreach (XmlNode cn in xe.ChildNodes)
                                {
                                    XmlElement xet = (XmlElement)cn;
                                    if (xet.Name != "SQL")
                                    {
                                        if (dic.ContainsKey(xet.InnerText))
                                        {
                                            rang = ws.get_Range(xet.Name, xet.Name);
                                            rang.set_Value(Type.Missing, dic[xet.InnerText]);
                                        }
                                    }
                                }
                            }

                        }

                        string filename = @"D:\xxx\{0}.xls";
                        filename = string.Format(filename, title);
                        if (File.Exists(filename) == false)
                        {
                            wb.SaveAs(filename, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, XlSaveAsAccessMode.xlNoChange, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value);
                        }
                    }
                }
                wb.Close(Type.Missing, Type.Missing, Type.Missing);
                wbs.Close();
                app.Quit();
                wb = null;
                wbs = null;
                app = null;
                GC.Collect();
                //MessageBox.Show("生成成功！");
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
        }