SqlBulkCopy这种批量写入方式,可以大大的节约数据库导入数据的时间,因为字符串拼接后通过循环插入数据库、需要不停的打开和关闭连接。
注意事项:dataTable的表头得和所要插入的数据库表中的字段名称一一对应,注意重命名:如:dataTable.Columns[0].ColumnName = "内容";
/// <summary>
/// 利用SqlBulkCopy批量写入数据库
/// </summary>
/// <param name="dt"></param>
public void WriteIntoDataBase(DataTable dt)
{
SqlConnection myConn = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["dbBaseDatabase"].ConnectionString);
myConn.Open();
SqlBulkCopy bulkCopy = new SqlBulkCopy(myConn);
bulkCopy.BatchSize = 10000;
bulkCopy.BulkCopyTimeout = 60;
bulkCopy.DestinationTableName = "T_Sys_UploadTest";
for (int i = 0; i < dt.Columns.Count; i++)
{
string columnName = dt.Columns[i].ColumnName;
bulkCopy.ColumnMappings.Add(columnName, columnName);
}
bulkCopy.WriteToServer(dt);
//myConn.Close();
myConn.Dispose();
}