<connectionStrings>  <add name="oleConStr" connectionString="Provider=Microsoft.Jet.OLEDB.4.0;Data Source="/>    <add name="sqlConStr" connectionString ="server=tiantiankaixing;database=新建數(shù)據(jù)庫;trusted_connection=sspi"/> </connectionStrings>

public static string OleConStr = ConfigurationManager.ConnectionStrings["oleConStr"].ConnectionString ; public static DataTable OleGetDataTable(string sql, string filePath)    {            string a = OleConStr + filePath;      using (OleDbConnection conn = new OleDbConnection(a))      {        using (OleDbDataAdapter da = new OleDbDataAdapter(sql, conn))        {          try          {            conn.Open();            DataTable dt = new DataTable();            da.Fill(dt);            return dt;          }          catch (Exception ex)          {            throw ex;          }          finally          {            if (conn.State == ConnectionState.Open)              conn.Close();          }        }      }    }

string sql = "select Id,Time from checkinout";DataTable dt = AcHelper.OleGetDataTable(sql, @"F:/project/tiantiankaixing/admin.mdb");

public static void DataTableToSQLServer(DataTable dt,string connectString)    {      string connectionString = connectString;      using (SqlConnection destinationConnection = new SqlConnection(connectionString))      {        destinationConnection.Open();        using (SqlBulkCopy bulkCopy = new SqlBulkCopy(destinationConnection))        {          try          {            bulkCopy.DestinationTableName = "checkinout";//要插入的表的表名            bulkCopy.BatchSize = dt.Rows.Count;            bulkCopy.ColumnMappings.Add("ID", "ID");//映射字段名 DataTable列名 ,數(shù)據(jù)庫 對(duì)應(yīng)的列名             bulkCopy.ColumnMappings.Add("TIME", "TIME");                        bulkCopy.WriteToServer(dt);            System.Windows.Forms.MessageBox.Show("插入成功");          }          catch (Exception ex)          {            Console.WriteLine(ex.Message);          }          finally          {                      }        }      }    }

string localCon = "server=tiantiankaixing;database=Test;trusted_connection=sspi";Entity.DataTableToSQLServer(dt, localCon);

public void Test()    {      string connectionString = "server=tiantiankaixing;database=新建數(shù)據(jù)庫;trusted_connection=sspi";            using (SqlConnection sourceConnection =            new SqlConnection(connectionString))      {        sourceConnection.Open();        //獲取讀取的表總行數(shù)        SqlCommand commandRowCount = new SqlCommand("select count(*) from student",sourceConnection);        long countStart = System.Convert.ToInt32(commandRowCount.ExecuteScalar());                //使用SqlDataReader讀取源數(shù)據(jù)        SqlCommand commandSourceData = new SqlCommand("select * from student", sourceConnection);        SqlDataReader reader =commandSourceData.ExecuteReader();        //測(cè)試用，把數(shù)據(jù)從一個(gè)表批量插入到另一個(gè)表        //現(xiàn)實(shí)生活中肯定不會(huì)        using (SqlConnection destinationConnection =new SqlConnection(connectionString))        {          destinationConnection.Open();          //創(chuàng)建一個(gè)SQlBulkCopy對(duì)象          //指定目標(biāo)表名          //指定要插入的行數(shù)          //指定對(duì)應(yīng)的映射          using (SqlBulkCopy bulkCopy =new SqlBulkCopy(destinationConnection))          {            bulkCopy.DestinationTableName ="test";            bulkCopy.BatchSize = 1;            bulkCopy.ColumnMappings.Add("數(shù)據(jù)源列名","目標(biāo)列名");            try            {                            bulkCopy.WriteToServer(reader);            }            catch (Exception ex)            {              Console.WriteLine(ex.Message);            }            finally            {              reader.Close();            }          }        }      }    }