Npoi将excel数据导入到sqlserver数据库

         /// <summary>
         /// 将excel导入到datatable
         /// </summary>
         /// <param name="filePath">excel路径</param>
         /// <returns>返回datatable</returns>
         DataTable ExcelTable = null;
         FileStream fs = null;
         DataColumn column = null;
         DataRow dataRow = null;
         IWorkbook workbook = null;
         ISheet sheet = null;
         IRow row = null;
         ICell cell = null;
         int startRow = ;
         public bool ExcelToDataTable(string filePath)
         {

             try
             {
                 using (fs = new FileStream(filePath, FileMode.Open, FileAccess.Read))
                 {
                     // 解决版本兼容
                     //07以前为xls,以后为xlsx
                     if (filePath.IndexOf(".xlsx") > )
                     {
                         workbook = new XSSFWorkbook(fs);
                     }
                     else if (filePath.IndexOf(".xls") > )
                     {
                         workbook = new HSSFWorkbook(fs);
                     }
                     if (workbook != null)
                     {
                         sheet = workbook.GetSheetAt();//读取第一个sheet
                         ExcelTable = new DataTable();
                         if (sheet != null)
                         {
                             int rowCount = sheet.LastRowNum;//总行数
                             if (rowCount > )
                             {
                                 IRow firstRow = sheet.GetRow();//第二行
                                 int cellCount = firstRow.LastCellNum;//列数
                                 //创建datatable的列
                                   startRow = ;//因为第一行是中文列名所以直接从第二行开始读取
                                     for (int i = firstRow.FirstCellNum; i < cellCount; ++i)
                                     {
                                         cell = firstRow.GetCell(i);
                                         if (cell != null)
                                         {
                                             if (cell.StringCellValue != null)
                                             {
                                                 column = new DataColumn(cell.StringCellValue);
                                                 ExcelTable.Columns.Add(column);
                                             }
                                         }
                                     }

                                 //填充datatable行
                                 for (int i = startRow; i <= rowCount; ++i)
                                 {
                                     row = sheet.GetRow(i);
                                     if (row == null) continue;

                                     dataRow = ExcelTable.NewRow();
                                     for (int j = row.FirstCellNum; j < cellCount; ++j)
                                     {
                                         cell = row.GetCell(j);
                                         if (cell == null)
                                         {
                                             dataRow[j] = "";
                                         }
                                         else
                                         {
                                             switch (cell.CellType)
                                             {
                                                 case CellType.Blank:
                                                     dataRow[j] = "";
                                                     break;
                                                 case CellType.Numeric:
                                                     short format = cell.CellStyle.DataFormat;
                                                     //对时间格式的处理
                                                     if (format ==  || format ==  || format ==  || format == )
                                                         dataRow[j] = cell.DateCellValue;
                                                     else
                                                         dataRow[j] = cell.NumericCellValue;
                                                     break;
                                                 case CellType.String:
                                                     dataRow[j] = cell.StringCellValue;
                                                     break;
                                             }
                                         }
                                     }

                                     ExcelTable.Rows.Add(dataRow);

                                 }
                             }
                         }
                     }
                 }
                 //由于excel表在删除一张表的时候回再次读取回出现空行的原因
                 //所以需要一个删除空行的方法⇣⇣⇣⇣
                 List<DataRow> removelist = new List<DataRow>();
                 for (int i = ; i < ExcelTable.Rows.Count; i++)
                 {
                     bool IsNull = true;
                     for (int j = ; j < ExcelTable.Columns.Count; j++)
                     {
                         if (!string.IsNullOrEmpty(ExcelTable.Rows[i][j].ToString().Trim()))
                         {
                             IsNull = false;
                         }
                     }
                     if (IsNull)
                     {
                         removelist.Add(ExcelTable.Rows[i]);
                     }
                 }
                 for (int i = ; i < removelist.Count; i++)
                 {
                     ExcelTable.Rows.Remove(removelist[i]);
                 }
                 removelist.Clear();
                 //遍历将datatable内的值存入数据库
                 foreach (DataRow item in ExcelTable.Rows)
                 {

                   RT_Community com = new Model.RT_Community();
                   RT_UserInfo userinfo = new Model.RT_UserInfo();
                   Guid guid = Guid.NewGuid();
                   Guid guidu = Guid.NewGuid();
                   int aid = GetVpnUserName(item[].ToString());
                   int query = ;

                   using (var conn = PublicMethod.GetSqlConnection())
                   {
                        //当小区名称存在时会返回-1
                         query = conn.Execute(@"IF NOT EXISTS
                                                   (SELECT Name FROM RT_Community WHERE Name=@Name )
                                                   INSERT INTO RT_Community
                                                   (Id,VpnUser_id,Name,Sabb,PropertyName,PropertyUserName,PropertyPhone,Address,IsDelete) values
                                                   (@Id,@VpnUser_id,@Name,@Sabb,@PropertyName,@PropertyUserName,@PropertyPhone,@Address,@IsDelete)",
                       new {
                            Id = guid,
                            VpnUser_id = aid,
                            Name = item[].ToString(),
                            Sabb = ChinesePinYin.GetSpellCode(item[].ToString()),
                            PropertyName = item[].ToString(),
                            PropertyUserName = item[].ToString(),
                            PropertyPhone = item[].ToString(),
                            Address = item[].ToString(),
                            IsDelete = ,
                        });
                     }
                   //当返回-1时调用查询小区id的方法对guid重新赋值
                   if (query == -)
                   {
                       guid = GetComId(item[].ToString());
                       if (guid.ToString() == "00000000-0000-0000-0000-000000000000")
                         {
                           //当返回的guid为0时
                             return false;
                         }
                   }
                   using (var conn = PublicMethod.GetSqlConnection())
                   {
                       var result = conn.Execute(@"INSERT INTO RT_UserInfo
                                                 (Id,
                                                  rt_community_id,
                                                  UserCode,
                                                  Name,
                                                  BuildingNo,
                                                  UnitNo,
                                                  Floor,
                                                  HouseNo,
                                                  Address,
                                                  HeatType,
                                                  Location,
                                                  Phone,
                                                  IsDelete) VALUES
                                                 (@Id,
                                                  @rt_community_id,
                                                  @UserCode,
                                                  @Name,
                                                  @BuildingNo,
                                                  @UnitNo,
                                                  @Floor,
                                                  @HouseNo,
                                                  @Address,
                                                  @HeatType,
                                                  @Location,
                                                  @Phone,
                                                  @IsDelete)",
                                  new
                                  {

                                       Id = guidu,
                                       rt_community_id = guid,
                                       UserCode = item[].ToString(),
                                       Name = item[].ToString(),
                                       BuildingNo = item[].ToString(),
                                       UnitNo = item[].ToString(),
                                       Floor = item[].ToString(),
                                       HouseNo = item[].ToString(),
                                       Location = item[].ToString(),
                                       Address = item[].ToString(),
                                       HeatType = ,
                                       Phone = item[].ToString(),
                                       IsDelete =
                                   });
                              }

                 }
                 //成功返回true
                 return true;
             }
             catch (Exception)
             {
                 if (fs != null)
                 {
                     fs.Close();
                 }
                 return false;
             }
         }
　　　　//使用时直接用nuget包搜索nopi第一个导入这样就全装好了简单又省事