.Net 操作Excel表格

一、.从NuGet中，引用 Microsoft.Office.Interop.Excel类库。

方法一、先打开一个execl表然后进行保存

 Application xApp = null;
 Workbook xBook = null;

           try
            {
                //1.创建Applicaton对象
                xApp = new Application();
                xApp.Visible = true;

                Workbooks wbs = xApp.Workbooks;
                Workbook wb = wbs.Add(Missing.Value);
                Worksheet xSheet = (Worksheet)wb.Worksheets["Sheet1"];
                Range r = xSheet.get_Range("A1", "N1");

         object[] objHeader =
                {
                    "序号", "用户名", "手机号", "是否消费", "充值金额", "充值次数", "购买服务金额", "购买服务次数", "购买版权金额", "购买版权次数", "代金券金额",
                    "赠送金额", "总金额", "账户余额"
                    };



           int  row = 2;//第一行是标题
                for (int i = 0; i < array.Length; i++)
                {
                    var str = array[i];
                    var list = TJsonResult.DeserializeObject<List<UserInfoAnalysisEntity>>(str);
                    foreach (var entity in list)
                    {
                        if (entity.Cost == "是")
                        {
                            xSheet.Cells.Font.ColorIndex = 3;
                        }
                        else
                        {
                            xSheet.Cells.Font.ColorIndex = 1;
                        }
                        xSheet.Cells[row, 1] = entity.Id;
                        xSheet.Cells[row, 2] = entity.UserName;
                        xSheet.Cells[row, 3] = entity.Phone;
                        xSheet.Cells[row, 4] = entity.Cost;
                        xSheet.Cells[row, 5] = entity.Recharge;
                        xSheet.Cells[row, 6] = entity.RechargeNum;
                        xSheet.Cells[row, 7] = entity.BuyServices;
                        xSheet.Cells[row, 8] = entity.BuyServicesNum;
                        xSheet.Cells[row, 9] = entity.BuyCopyRight;
                        xSheet.Cells[row, 10] = entity.BuyCopyRightNum;
                        xSheet.Cells[row, 11] = entity.Coupon;
                        xSheet.Cells[row, 12] = entity.GiveMoney;
                        xSheet.Cells[row, 13] = entity.TotalMoney;
                        xSheet.Cells[row, 14] = entity.Balance;
                        row++;//表示行号
                    }
                }

          var filepath = AppDomain.CurrentDomain.BaseDirectory + "test123.xlsx";
           xSheet.SaveAs(filepath, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value,
         Missing.Value, Missing.Value, Missing.Value, Missing.Value);

 更多操作：https://www.cnblogs.com/junshijie/p/5292087.html

另一种方法是引用 Free Spire.XLS for .NET 这个类库 

https://www.cnblogs.com/Yesi/category/649975.html