entity framework data access layer example

Automatically install. NET Framework and Data Access Components when you deploy a program. 1. Download the plug-in, complete the installation. http://download.microsoft.com/download/4/e/f/4ef7254b-d6c2-4f6f-8028-f03a594d5edf/PluginInstaller.msi, and install the plug-in. 2. Install the framework Create an installatio

follows: ● DLL deployment path: islineframework \ isline. provider. dataprovider. cfgdllname, where isline. provider. dataprovider. dldllname is the DLL name configured in Web. config. ● Namespace of the factory: isline. provider. dataprovider ● Factory class name: dbfactory ● Method type dbproviderfactory ● Method Name: getdbprovider () Dataprovider also has a class "dbprovider". This provider does not specify whether it is sqlserver, Oracle, or other databases. You need to comply

:");Db. Where = EventBaseSet. EventID _. BiggerThan _ (0 );Var list = db. GetTopList Foreach (var element in list ){Console. WriteLine (element. EventName );}// 9 Delete data -------------------Db. Where = EventBaseSet. Creater_CreaterID _. Equals (3 );Db. DeleteWhere (db. Where );Db. SaveChanges ();// Pure SQL supportVar deleteSql = "delete from EventBaseSet where EventID = 2 ";DBTool. Database. ExecuteOneSql (deleteSql );// 10 json supportedVar jso

Pagerparameters You can obtain the ipagermanager instance of the data page manager of the target table from idataaccesser. The ipagermanager interface is completely defined as follows: Public Interface Ipagermanager{ /// /// Getpage retrieves the index page /// DatatableGetpage ( Int Index ); //////Itemcount total number of qualified records///IntItemcount {Get;} // // total pagecount pages // int

I have used several times before. NET data access framework, always think that some places are not easy to use, after more than 20 hours of suffering, I sat on the shoulders of my predecessors. the. NET data access framework is fi

: Http://download.csdn.net/source/3508105 Recently, I have developed a mobile app, and I need to use the SQLite database. I haven't found a suitable data access component for a long time on the Internet, I had to make a new one based on the existing linq4anydb data access component. After two weeks of efforts, I have

implementation of the second goal can use file sharing methods, such as NFS, but it is somewhat complex to set up and operate. We can put the data in the memcache. So that each server can easily access the same data source, get the same session data.The solution is shown in the following illustration: Ok. More interested in Zend related content readers can v

). (3) fine-grained isolation level: for example, you can use the readuncommitted isolation level to read data for some queries with low requirements. Datarabbit. application.TransactionscopefactoryproviderThe TransactionscopefactoryproviderThe class chart structure is as follows: Generic parametersTsourcekeyIs used to represent the type of the data s

, " Easnew9 " );Paralist. Add (para1 );SpparameterPara2 = New Spparameter( " Dbdatadirpath " , Parameterdirection. input, @" C: \ Program Files \ Microsoft SQL Server \ MSSQL \ data \ " );Paralist. Add (para2 );SpparameterPara3 = New Spparameter( " Souredbname " , Parameterdirection. input, " Autoschedulersystem " );Paralist. Add (para3 );SpparameterPara4 = New Spparameter( " Sourebackupfilepath " , Parameterdirectio

array. One-time session data The so-called one-time data is the next request (just the next time) valid session data, a common application scenario is the form validation error message. Usage is also very simple, you can use the Flash method. For example, we write the test code in Testcontroller@session as follows:

An example of using a three-tier architecture for data access I have read the three-tier architecture over the past two days. I have read this architecture before. I can only know the three-tier architecture because I have never used it, yesterday, I checked some of his internal architectures. The three layers are BLL, WEB, and DAL. on the web, I accept user requ