1、实时记录：
var aNum = sysConfigEntityBll.GetQueryable().FirstOrDefault(item => item.Key.Trim() == "22");
在数据访问类调用：
public IQueryable<SysConfig> GetQueryable()
{
MwtsEntities.SysConfigs.MergeOption = MergeOption.OverwriteChanges;
return MwtsEntities.SysConfigs.AsQueryable();
}
总结：可以得到实时数据，并可以及时更新。
2、重新加载一个数据表
USE [OMSS]
GO
/****** Object: Table [dbo].[DispatchInfo] Script Date: 10/28/2011 10:51:43 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
drop table [DispatchInfo]
CREATE TABLE [dbo].[DispatchInfo](
[id] [int] IDENTITY(1,1) NOT NULL,
[DispatchSponsors] [nchar](10) NULL,
[DispatchStart] [nvarchar](50) NULL,
[DispatchEnd] [nvarchar](50) NULL,
[DispatchTime] [datetime] NULL,
[DispatchContent] [nvarchar](max) NULL,
[DispatchMark] [nchar](10) NULL,
[DispatchRemark] [nchar](10) NULL,
[DeviceType] [int] NULL,
CONSTRAINT [PK_DispathchInfo] PRIMARY KEY CLUSTERED
(
[id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO
