C#excel、sql sever批量数据的导入导出

        /// 

        /// 批量导出数据到excel
        /// 
        /// 
        /// 
        /// 
        public bool DataSetToExcel(DataSet dataSet, bool isShowExcle)
        {
            System.Data.DataTable dataTable = dataSet.Tables[0];
            int rowNumber = dataTable.Rows.Count;//不包括字段名 
            int columnNumber = dataTable.Columns.Count;
            int colIndex = 0;

            if (rowNumber == 0)
            {
                return false;
            }

            //建立Excel对象 
            Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
            //excel.Application.Workbooks.Add(true); 
            Microsoft.Office.Interop.Excel.Workbook workbook = excel.Workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);
            Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1];
            excel.Visible = isShowExcle;
            //Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)excel.Worksheets[1]; 
            Microsoft.Office.Interop.Excel.Range range = null;

            //生成字段名称 
            foreach (DataColumn col in dataTable.Columns)
            {
                colIndex++;
                excel.Cells[1, colIndex] = col.ColumnName;
            }

            object[,] objData = new object[rowNumber, columnNumber];

            for (int r = 0; r < rowNumber; r++)
            {
                for (int c = 0; c < columnNumber; c++)
                {
                    objData[r, c] = dataTable.Rows[r][c];
                }
                //Application.DoEvents(); 
            }
            try
            {
                // 写入Excel 
                range = worksheet.Range[excel.Cells[2, 1], excel.Cells[rowNumber + 1, columnNumber]];
                //range.NumberFormat = "@";//设置单元格为文本格式 
                range.Value2 = objData;
            }
            catch (Exception ex)
            {

            }
            finally
            {
                // 释放Workbook对象
                System.Runtime.InteropServices.Marshal.ReleaseComObject(workbook);
                System.Runtime.InteropServices.Marshal.ReleaseComObject(worksheet);
                System.Runtime.InteropServices.Marshal.ReleaseComObject(excel);
                workbook = null;
                worksheet = null;
                range = null;
                excel = null;
                GC.Collect();
            }
            return true;
        }

        /// 

        /// 批量导入sql sever
        /// 
        /// 
        private static void DataTableToSQLServer(System.Data.DataTable dt)
        {
            using (SqlConnection destinationConnection = new SqlConnection(constr))
            {
                destinationConnection.Open();

                using (SqlBulkCopy bulkCopy = new SqlBulkCopy(destinationConnection))
                {
                    try
                    {

                        bulkCopy.DestinationTableName = "zwb_test";//要插入的表的表明
                        //bulkCopy.ColumnMappings.Add("序号", "Email");//映射字段名 DataTable列名 ,数据库 对应的列名
                        bulkCopy.ColumnMappings.Add("项目", "xm_name");
                        bulkCopy.ColumnMappings.Add("PK代码", "dx");
                        bulkCopy.ColumnMappings.Add("电池档位", "mz_ch");
                        bulkCopy.ColumnMappings.Add("电池条码", "dctm");
                        bulkCopy.ColumnMappings.Add("PACK号", "demo");
                        bulkCopy.ColumnMappings.Add("对应工单", "gd_no");
                        bulkCopy.ColumnMappings.Add("rb", "rb");
                        bulkCopy.ColumnMappings.Add("建档日期", "jdrq");
                        bulkCopy.WriteToServer(dt);
                        MessageBox.Show("ok");
                    }
                    catch (Exception ex)
                    {
                        Console.WriteLine(ex.Message);
                    }
                    finally
                    {
                        // Close the SqlDataReader. The SqlBulkCopy
                        // object is automatically closed at the end
                        // of the using block.
                        destinationConnection.Close();
                    }
                }
            }
        }