C# 导入和导出EXCEL

一、导入Excel(WinFrom)

    (1)Excel Model 定义

    public class ImportExpressCustomModel

    {

        /// <summary>

        /// 收件人姓名

        /// </summary>

        [CsvField(Name = "收件人姓名")]

        public string Receivername { get; set; }

        /// <summary>

        /// 收件人公司

        /// </summary>

        [CsvField(Name = "收件人公司")]

        public string ReceiverCompany { get; set; }

        /// <summary>

        /// 收件人电话

        /// </summary>

        [CsvField(Name = "收件人电话")]

        public string ReceiverPhone { get; set; }

        /// <summary>

        /// 收件人Email

        /// </summary>

        [CsvField(Name = "收件人Email")]

        public string ReceiverEmail { get; set; }

        /// <summary>

        /// 收件人地址

        /// </summary>

        [CsvField(Name = "收件人地址")]

        public string ReceiverAddress { get; set; }

        /// <summary>

        /// 发件人公司

        /// </summary>

        [CsvField(Name = "发件人公司")]

        public string FormCompany { get; set; }

        /// <summary>

        /// 快递单号

        /// </summary>

        [CsvField(Name = "快递单号")]

        public string WaybillNumber { get; set; }

    }

    (2)属性绑定（文件路径）

        private string FilePath

        {

            get { return ctrlFilePath.Text; }

            set { ctrlFilePath.Text = value; }

        }

      （3）验证Excel指定列不可为空

        private static bool Verif(ImportExpressCustomModel model)

        {

            return !string.IsNullOrWhiteSpace(model.WaybillNumber)

                   && !string.IsNullOrWhiteSpace(model.ReceiverAddress);

        }

 （4）获取导入的数据

        private static IEnumerable<ImportExpressCustomModel> GetExpressCustomCollection(string path)

        {

            if (path == null || !File.Exists(path))

            {

                return null;

            }

            string fileExtension = Path.GetExtension(path).ToUpper();

            IEnumerable<ImportExpressCustomModel> records;

            switch (fileExtension)

            {

                case ".XLSX":

                    records = path.GetRecordsFromXlsx<ImportExpressCustomModel>();

                    break;

                case ".XLS":

                    records = path.GetRecordsFromXls<ImportExpressCustomModel>();

                    break;

                default:

                    return null;

            }

            return records.Where(Verif).ToList();

        }

（5）存入

 private void ctrlFilePath_MouseDown(object sender, MouseEventArgs e)

        {

            if (openFileDialog1.ShowDialog() != DialogResult.OK) return;

            LogMessage = "";

            FilePath = "";

            var models = new List<ImportExpressCustomModel>();

            if (openFileDialog1.FileNames.Length > 0)

            {

                foreach (var t in openFileDialog1.FileNames)

                {

                    FilePath += t + ";";

                    models.AddRange(GetExpressCustomCollection(t));

                }

            }

            gvData.DataSource = models;

            gvData.Update();

            LogMessage = $"共{gvData.RowCount}行数据";

        }

二、导出Excel

      (1)导出excel的数据用list接收

        .//查询导出数据

        private void btnSelect_Click(object sender, EventArgs e)

        {

            list = customerlLogic.GetSummary(dtpDateForm.Value,

                    dtpDateTo.Value, txtCustomerCode.Text);

            dgrdData.DataSource = list;

            dgrdData.Update();

            DataCount = string.Format("共{0}行数据", dgrdData.RowCount);

        }

       （2）导出

        private void btnExport_Click(object sender, EventArgs e)

        {

            this.openFileDialog.DefaultExt = "xlsx";

            this.openFileDialog.FileName = @"客户发货清单";

            this.openFileDialog.Filter = @"Excel 工作簿(*.xlsx)|*.xlsx|所有文件(*.*)|*.*";

            if (this.openFileDialog.ShowDialog(this) != DialogResult.OK) return;

            if (dgrdData.RowCount != null && dgrdData.RowCount > 0)

            {

                list.WriteRecordsToXlsx(this.openFileDialog.FileName);

                MessageBox.Show("导出成功");

            }     

        }

三、

（1）CsvHelper    关于CSV文件导入和导出以及转化

（2）list.WriteRecordsToXlsx （Cnzilla.Library.dll） Cnzilla.Library.Extensions

（3）path.GetRecordsFromXlsx  Cnzilla.Library.Extensions