C# excel导入导出

注意：服务器需要安装office软件

1、Excel导入
    提示：未在本地计算机上注册“Microsoft.Jet.OLEDB.4.0”提供程序。
              未在本地计算机上注册“Microsoft.ACE.OLEDB.12.0”提供程序。
   解决方法如下：
   打开IIS管理器 -> 应用程序管理池 -> 选择相应程序的应用池 -> 
   右键 -> 应用程序池默认设置 -> 常规选项卡 -> 
   启用32位应用程序设置成 True


上传excel文件代码

public ActionResult EditAction(FormCollection collection)
{
    try
    {
        string filePath = string.Empty;
        string fileType = string.Empty;
        HttpPostedFileBase postedFile = Request.Files["fileImage"];

        #region 上传文件

        fileType = Path.GetExtension(postedFile.FileName).ToLower();//文件的后缀名(小写)

        FileUploadResult result = FileHelper.CreatePostedFileToImage(postedFile, @"upload\excel\");
        if (result != null && result.Code == (int)CodeEnum.Success)
        {
            filePath = result.Path;
        }
        filePath = ConstantParamInfo.PhysicalApplicationPath + filePath;

        ImportSql(filePath, fileType);
        #endregion
    }
    catch (Exception ex)
    {
    }
    return RedirectToAction("Index", "CityManage");
}

读取excel文件数据，插入数据库数据代码

        public bool ImportSql(string excelPath, string fileType)
        {
            string strCon = string.Empty;

            if (fileType == ".xls")
                strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + excelPath + ";Extended Properties='Excel 8.0;HDR=YES;IMEX=1'";
            else
                strCon = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + excelPath + ";Extended Properties='Excel 12.0;HDR=YES;IMEX=1'";

            System.Data.OleDb.OleDbConnection Conn = new System.Data.OleDb.OleDbConnection(strCon);
            string strCom = "SELECT * FROM [Sheet1$]";
            string strComNew = "SELECT * FROM [Sheet2$]";
            DataTable dt;
            DataTable dtNew;
            try
            {
                #region city table

                System.Data.OleDb.OleDbDataAdapter myCommand = new System.Data.OleDb.OleDbDataAdapter(strCom, strCon);
                DataSet ds = new DataSet();
                myCommand.Fill(ds, "[Sheet1$]");
                dt = ds.Tables[0];
                if (dt != null)
                {
                    if (cityBiz.DeleteAll())
                    {
                        for (int i = 0; i < dt.Rows.Count; i++)
                        {
                            var model = new City
                            {
                                ID = Convert.ToInt32(dt.Rows[i][0].ToString()),
                                ProvincialID = 0,
                                Title = dt.Rows[i][1].ToString(),
                                State = "A"
                            };
                            cityBiz.Add(model);
                        }
                    }
                }
                #endregion

                #region Hospital table

                System.Data.OleDb.OleDbDataAdapter myCommandNew = new System.Data.OleDb.OleDbDataAdapter(strComNew, strCon);
                DataSet dsNew = new DataSet();
                myCommandNew.Fill(dsNew, "[Sheet2$]");
                dtNew = dsNew.Tables[0];
                if (dtNew != null)
                {
                    if (hospitalBiz.DeleteAll())
                    {
                        for (int i = 0; i < dtNew.Rows.Count; i++)
                        {
                            var model = new Hospital
                            {
                                CityId = Convert.ToInt32(dtNew.Rows[i][0].ToString()),
                                Title = dtNew.Rows[i][1].ToString(),
                                CreateBy = 0
                            };
                            hospitalBiz.Add(model);
                        }
                    }
                }

                #endregion

                return true;
            }
            catch (Exception ex)
            {
                logger.Error("ImportSql()" + ex.Message);
            }
            return false;
        }

2、Excel导出

        public ActionResult ExportCSV()
        {
            try
            {
                string Transactions = Request.Form["item"];
                List arr = new List();
                string[] strtemp = Transactions.Split(',');
                foreach (string strs in strtemp)
                {
                    arr.Add(long.Parse(strs));
                }
                //List PaymentList = PaymentBusi.GetTransactionDetails(this.CurrentAccount.SiteID, arr.ToArray());
                List PaymentList = new List();

                MemoryStream stream = new MemoryStream();
                StreamWriter writer = new StreamWriter(stream);

                writer.WriteLine("AccountName,Date,TransactionID,ItemDesc,Amount,TransactionTotal");
                writer.Flush();
                for (int i = 0; i < PaymentList.Count; i++)
                {
                    string Summary = string.Empty;
                    string PaymentIDF = string.Empty;
                    string PaymentID = string.Empty;
                    if (PaymentList[i].PaymentItems.Count > 0)
                        Summary = DelQuota(PaymentList[i].PaymentItems[0].Summary);

                    if (PaymentList[i].PaymentID > 0)
                        PaymentIDF = PaymentList[i].PaymentID.ToString();

                    writer.WriteLine(string.Format("{0},{1},{2},{3},{4},{5}",
                       DelQuota(PaymentList[i].AccountName),
                       Convert.ToDateTime(PaymentList[i].CreateDate, GetMDDYYFormat()).ToShortDateString(),
                       PaymentList[i].PaymentID,
                       Summary,
                       "$" + PaymentList[i].PaymentItems[0].Amount.ToString(),
                       ""
                      ));

                    if (PaymentList[i].PaymentItems.Count > 0)
                    {
                        for (int j = 0; j < PaymentList[i].PaymentItems.Count; j++)
                        {

                            if (PaymentList[i].PaymentItems[j].PaymentID > 0)
                                PaymentID = PaymentList[i].PaymentItems[j].PaymentID.ToString();
                            if (j != 0)
                            {
                                writer.WriteLine(string.Format("{0},{1},{2},{3},{4},{5}",
                                                              "",
                                                              "",
                                                              PaymentID,
                                                              DelQuota(PaymentList[i].PaymentItems[j].Summary),
                                                              "$" + PaymentList[i].PaymentItems[j].Amount.ToString(),
                                                              ""
                                                          ));
                            }
                        }
                        writer.WriteLine(string.Format("{0},{1},{2},{3},{4},{5}",
                               "",
                               "",
                               "",
                               "",
                               "",
                               "$" + PaymentList[i].Amount.ToString()
                        ));
                    }
                    writer.Flush();
                }

                stream.Position = 0;
                byte[] buffer = new byte[stream.Length];
                stream.Read(buffer, 0, buffer.Length);
                stream.Close();

                return File(buffer, "text/plain", "PaymentInvoice.csv");
            }
            catch (Exception)
            {
                return View();
            }
        }

        public string DelQuota(string str)
        {
            string result = str;
            string[] strQuota = { "~", "!", "@", "#", "$", "%", "^", "&", "*", "(", ")", "`", ";", "'", ",", ".", "/", ":", "/,", "<", ">", "?" };
            for (int i = 0; i < strQuota.Length; i++)
            {
                if (result.IndexOf(strQuota[i]) > -1)
                    result = result.Replace(strQuota[i], "");
            }
            return result;
        }

        public System.Globalization.DateTimeFormatInfo GetMDDYYFormat()
        {
            System.Globalization.DateTimeFormatInfo dtFormat = new System.Globalization.DateTimeFormatInfo();
            dtFormat.ShortDatePattern = "M/dd/yy";
            return dtFormat;
        }

    public class PaymentMaster
    {
        public string PaymentMethod { get; set; }
        public long PaymentID { get; set; }
        public long AccountID { get; set; }
        public long ContactID { get; set; }
        public int Status { get; set; }
        public long SiteID { get; set; }
        public long ClientID { get; set; }
        public string LoginName { get; set; }
        public string FirstName { get; set; }
        public string LastName { get; set; }
        public string Amount { get; set; }
        public int DetailCount { get; set; }
        public string Description { get; set; }
        public System.DateTime ModifyDate { get; set; }
        public string CreateDate { get; set; }

        public List RentalIDs { get; set; }

        public List PaymentItems { get; set; }
        public List UnitNumbers { get; set; }

        public string AccountName { get; set; }

    }

    public class PaymentDetail
    {
        public long DetailID { get; set; }
        public int DetailType { get; set; }
        public long PaymentID { get; set; }
        public long AccountID { get; set; }
        public long ContactID { get; set; }
        public long RentalID { get; set; }

        public int Status { get; set; }

        public long SiteID { get; set; }
        public string Summary { get; set; }
        public string UnitNumber { get; set; }
        public string UnitSize { get; set; }
        public int UnitCount { get; set; }
        public string PaidThruDate { get; set; }

        //Public Property Dimensions As String

        public string Amount { get; set; }
        public string TransactionNumber { get; set; }
        public string Description { get; set; }

        public System.DateTime ModifyDate { get; set; }
        public System.DateTime CreateDate { get; set; }

    }