SQL Server批量插入数据

public bool SaveCompareResult(List<CompareResult> c)
        {
            bool flag = false;
            using (var db = new AOPContext())
            {
                SqlConnection sqlConn = new SqlConnection(db.Database.Connection.ConnectionString);
                SqlBulkCopy bulkCopy = new SqlBulkCopy(db.Database.Connection.ConnectionString);
                try
                {
                    bulkCopy.DestinationTableName = "CompareResult"; //要写入的表的名字
                    bulkCopy.BatchSize = c.Count;  
                    DataTable dt = new DataTable();
                    dt.Columns.AddRange(new DataColumn[]{  
                                        new DataColumn("CID",typeof(Guid)), 
                                        new DataColumn("RID",typeof(Guid)),
                                        new DataColumn("CType",typeof(int)), 
                                        new DataColumn("CChildType",typeof(int)),
                                        new DataColumn("Value1",typeof(string)), 
                                        new DataColumn("Value2",typeof(string)), 
                                        new DataColumn("Value3",typeof(string)), 
                                        new DataColumn("Value4",typeof(string)), 
                                        new DataColumn("Value5",typeof(int)), 
                                        new DataColumn("FileType",typeof(string)), 
                                        new DataColumn("Operator",typeof(string)), 
                                        new DataColumn("OperateDate",typeof(DateTime))});

                    foreach (CompareResult cr in c)
                    {
                        DataRow r = dt.NewRow();
                        r[0] = cr.CID;
                        r[1] = cr.RID;
                        r[2] = cr.CType;
                        r[3] = cr.CChildType;
                        r[4] = cr.Value1;
                        r[5] = cr.Value2;
                        r[6] = cr.Value3;
                        r[7] = cr.Value4;
                        r[8] = cr.Value5;
                        r[9] = cr.FileType;
                        r[10] = cr.Operator;
                        r[11] = cr.OperateDate;
                        dt.Rows.Add(r);  
                    }
                    sqlConn.Open();
                    bulkCopy.WriteToServer(dt);
                    flag = true;
                }
                catch (Exception ex)
                {
                    LoggerHelper.Error("SaveCompareResult执行出错: ", ex);
                }
                finally
                {
                    sqlConn.Close();
                    if (bulkCopy != null)
                        bulkCopy.Close();
                }
            }
            return flag;
        }

 要点

1 获得连接字符串

2 构造datatable

3 构造数据表

4 异常处理

实践中性能很好

参考 http://blog.csdn.net/tjvictor/article/details/4360030