C# 多笔数据导入DB

6万笔数据瞬间导入进DB

命名空间

using NPOI.HSSF.UserModel;

using NPOI.XSSF.UserModel;

//Filename为文件路径

public JsonResult ConsumptionUploadcoupon(string filename)

{

CouponManageBLL _bll = new CouponManageBLL();

var result = new Result<string>();

result.flag = false;

string Msg = string.Empty;

try

{

CouponManageBLL _BLL = new CouponManageBLL();

BLL.DeleteTempMember(); //先删除临时表信息

DataTable excelTable = new DataTable();

excelTable = GetExcelDataTable(filename, id); //将文件的数据导入datatable

//插入数据

InsertMemberInfo(excelTable, id);

result.flag = true;

}

catch (Exception ex)

{

Log(ex);

result.msg = ex.Message;

throw;

}

return Json(result, JsonRequestBehavior.AllowGet);

}

//将文件数据转为DATATABLE 储存方法

public DataTable GetExcelDataTable(string filePath, int id)

{

IWorkbook Workbook;

DataTable table = new DataTable();

try

{

using (FileStream fileStream = new FileStream(Server.MapPath("~" + filePath), FileMode.Open, FileAccess.Read))

{

//XSSFWorkbook 适用XLSX格式，HSSFWorkbook 适用XLS格式

string fileExt = Path.GetExtension(filePath).ToLower();

if (fileExt == ".xls")

{

Workbook = new HSSFWorkbook(fileStream);

}

else if (fileExt == ".xlsx")

{

Workbook = new XSSFWorkbook(fileStream);

}

else

{

Workbook = null;

}

}

}

catch (Exception ex)

{

throw ex;

}

//定位在第一个sheet

ISheet sheet = Workbook.GetSheetAt(0);

//第一行为标题行

IRow headerRow = sheet.GetRow(0);

int cellCount = headerRow.LastCellNum;

int rowCount = sheet.LastRowNum;

//循环添加标题列

for (int i = headerRow.FirstCellNum; i < cellCount; i++)

{

DataColumn column = new DataColumn(headerRow.GetCell(i).StringCellValue);

table.Columns.Add(column);

}

table.Columns.Add("coupon_id");

//数据

for (int i = (sheet.FirstRowNum + 1); i <= rowCount; i++)

{

IRow row = sheet.GetRow(i);

DataRow dataRow = table.NewRow();

if (row != null)

{

for (int j = row.FirstCellNum; j < cellCount; j++)

{

if (row.GetCell(j) != null)

{

dataRow[j] = GetCellValue(row.GetCell(j));

dataRow[j + 1] = id;

}

}

}

table.Rows.Add(dataRow);

}

return table;

}

//分页存放数据

public void InsertMemberInfo(DataTable dt, int id)

{

int index = 60000;

if (dt.Rows.Count >= index)

{

int count = dt.Rows.Count / index;

for (int i = 1; i <= count; i++)

{

DataTable dts = GetPagedTable(dt, i, index);

InsertDateTable(dts, id);

}

}

else

{

InsertDateTable(dt, id);

}

}

//与DB表对应进行数据映射

public void InsertDateTable(DataTable dt, int id)

{

string connectionString = ConfigurationManager.AppSettings["SQLConnection"];

// "Data Source =192.168.1.111; Initial Catalog =DB库名; Persist Security Info =True; User ID =sa; Password =123456";

using (SqlConnection destinationConnection = new SqlConnection(connectionString))

{

destinationConnection.Open();

using (SqlBulkCopy bulkCopy = new SqlBulkCopy(destinationConnection))

{

try

{

bulkCopy.DestinationTableName = "rsl_temp_coupon";//要插入的表的表名

bulkCopy.BatchSize = dt.Rows.Count;

bulkCopy.ColumnMappings.Add("coupon_no", "coupon_no");//映射字段名 DataTable列名 ,数据库 对应的列名

bulkCopy.ColumnMappings.Add("coupon_id", "coupon_id");

bulkCopy.WriteToServer(dt);

}

catch (Exception ex)

{

Console.WriteLine(ex.Message);

}

finally

{

}

}

}

}

注意导入进DB 数据的栏位一定要一致，否则导入失败。 如有好的建议请在下方评论