只需Ctrlc+ctrlv超级简单就能实现Npoi的导入，人类历史上.net，c#初级菜鸟学员的福利

     第一步

<form enctype="multipart/form-data" id="file-form">
        <a id="btnMCToOut" onclick="importExcel()" class="easyui-linkbutton" data-options="iconCls:'icon_CloseAll'">导入Excela>
        <input type="file" name="filed" id="filed">
form>
第二步

// 导入Excel
function importExcel() {
    var file = $("#filed").val();
    if (file == null || file.length == 0) {
        DJMask.msg("请先选择上传文件！");
        return false;
    }
    $('#file-form').ajaxSubmit({
        type: 'POST', // HTTP请求方式
        url: '../Ajax/Handler1.ashx', // 请求的URL地址
        dataType: 'text', // 服务器返回数据转换成的类型
        success: function (data) {
            DJMask.msg(data);
        },
        error: function (data) {
            DJMask.msg("oh,似乎出现点问题了！");
        }
    });
    $('#dgMenCards').datagrid('reload', {});//刷新表格
}

第三步

public void ProcessRequest(HttpContext context)
{
    context.Response.ContentType = "text/plain";
    HttpPostedFile filePost = context.Request.Files["filed"]; // 获取上传的文件
    string filePath = SaveExcelFile(filePost); // 保存文件并获取文件路径
    string msg= ExcelToDataTable(filePath, true);
    context.Response.Write(msg);
}

第四步

public void ProcessRequest(HttpContext context)
{
    context.Response.ContentType = "text/plain";
    HttpPostedFile filePost = context.Request.Files["filed"]; // 获取上传的文件
    string filePath = SaveExcelFile(filePost); // 保存文件并获取文件路径
    string msg= ExcelToDataTable(filePath, true);
    context.Response.Write(msg);
}

第五步

///
///
public string ExcelToDataTable(string filePath, bool isColumnName)
{
    int count = 0;
    try
    {


        DataTable dataTable = new DataTable();
        FileStream fs = null;
        IWorkbook workbook = null;
        ISheet sheet = null;
        using (fs = new FileStream(filePath, FileMode.Open))
        {
            if (filePath.IndexOf(".xlsx") > 0)
            {
                workbook = new XSSFWorkbook(fs);
                if (workbook != null)
                {
                    sheet = workbook.GetSheetAt(0);
                    if (sheet != null)
                    {
                        Models.MPMS_DBDataContext db = new Models.MPMS_DBDataContext();
                        int rowCount = sheet.LastRowNum;
                        for (int i = 1; i <= rowCount; i++)
                        {
                            Models.MemCards model = new Models.MemCards();
                            IRow row = sheet.GetRow(i);
                            model.CL_ID = int.Parse(row.GetCell(0).ToString());
                            model.S_ID = int.Parse(row.GetCell(1).ToString());
                            model.MC_CardID = (row.GetCell(2).ToString());//会员卡号

                            model.MC_Password = (row.GetCell(3).ToString());//卡片密码
                            model.MC_Name = (row.GetCell(4).ToString());//卡片密码
                            model.MC_Sex = int.Parse(row.GetCell(5).ToString());//会员性别

                            model.MC_Mobile = (row.GetCell(6).ToString());//手机号码
                            model.MC_Photo = "upload/1.jpg";//靓照

                            model.MC_Birthday_Month = 1;//会员生日--月
                            model.MC_Birthday_Day = 1;//会员生日--日
                            model.MC_BirthdayType = 1;//会员生日类型

                            model.MC_IsPast = 1;//是否设置卡片过期时间
                            model.MC_PastTime = DateTime.Now.AddYears(10);//卡片过期时间
                            model.MC_Point = int.Parse(row.GetCell(7).ToString());//当前积分
                            model.MC_Money = int.Parse(row.GetCell(8).ToString());//卡片付费
                            model.MC_TotalMoney = 0;//累计消费
                            model.MC_TotalCount = 0;//累计消费次数
                            model.MC_State = 1;//卡片状态
                            model.MC_IsPointAuto = 1;//积分是否可以自动换成等级

                            model.MC_RefererID = null;//推荐人ID
                            model.MC_RefererCard = null;//推荐人卡号
                            model.MC_RefererName = null;//推荐人姓名

                            model.MC_CreateTime = DateTime.Now;//积分是否可以自动换成等级
                            count++;
                            db.MemCards.InsertOnSubmit(model);
                            db.SubmitChanges();
                        }
                    }
                }
            }
        }
    }
    catch{ return "导入失败，字段错误！"; }
    return "成功导入" +count+ "条数据";
}