entity framework 6 0

stringPWD {Get;Set; } } Public Partial classOrclcontext:dbcontext { PublicOrclcontext ():Base("Name=orclcontext") { } Public VirtualDbsetGet;Set; } Public VirtualDbsetGet;Set; } Public VirtualDbsetGet;Set; } protected Override voidonmodelcreating (Dbmodelbuilder modelBuilder) { Modelbuilder.hasdefaultschema ( "User_snapsia"); DBO schema in Oracle database for user name modelbuilder.entity() . Property (e=e.id). Isunicode (false); } } Two issues du

Tags: img png data wiki file name HTML run EXE installTo EF6 Code First mode support SQLite has a few steps: One, need to install Sqlite-netfx451-setup-bundle-x86-2013-1.0.92.0.exe to let vs add ado with SQLite optional 1) go to Http://system.data.sqlite.org/index.html/doc/trunk/www/downloads.wiki to download the corresponding. NET version of the installation file (* Note the download file name with bundle, This will do plug-in support for VS) 2) Installation To select all installations Tick th

Entity Framework basics-Article 6 (Code First), entityframework If you don't need to talk about it, create a project directly below: 1. Create a console application Public class UserInfo { public UserInfo() { OrderInfo = new HashSet [Key] Public int UserID {get; set;} // primary key Public string UserName {get; set;} public virtual I

Label:With the release of EF5, a new support for database (SQL Server) UDF is available, depending on the following connection: Https://msdn.microsoft.com/en-us/data/hh859577.aspx, This feature is also inherited by the newly released EF6. The problem is that this UDF seems to be just for tvf-table Value function, but unfortunately, it cannot be imported when trying to import a scalar function. 　　The reason is that there is no support for scalar function in the EF6 version ... But there are also

UsingTry { } catch (Exception e) { throw; }Unable to catch the detailed exception prompt, the content of E.message is "Validation failed for one or more entities. See ' entityvalidationerrors ' for more details. "If you need to get detailed exception hints, use the1 Try2 {3 return Base. SaveChanges ();4 }5 Catch(Dbentityvalidationexception ex)

[Chapter10]. [Insertauthorbook] @AuthorId =1, @BookId =2exec [Chapter10]. [Insertauthorbook] @AuthorId =2, @BookId =3exec [Chapter10]. [Deleteauthorbook] @AuthorId =1, @BookId =1EXEC sp_executesql N ' delete [Chapter10]. [Book] WHERE ([BookId] = @0) ', N ' @0 int ', @0=1How does it work?To map stored procedures to insert and delete operations in many-to-many rel

, Revenue: $189.98Joan Hills, Total Reservations:2, Revenue: $189.98Using LINQ ...Alex Stevens, Total Reservations:2, Revenue: $189.98Joan Hills, Total Reservations:2, Revenue: $189.98How does it work?In Listing 11-9, in the visitorsummary () function definition, we grouped by the entity's navigation property visitor, we used the ESQL count () function to calculate the number of bookings per visitor, and sum () to total the rent paid by each visitor.In this function, we organize the results into

enlarged to understand the inheritance relationship details, the effect is as follows. I have provided a good overview of my EF Entity Framework Design ideas. These layers are finally integrated generation using the code generation tool Database2Sharp to improve the purpose of rapid production, all naming rules are unified. Next I will have the opportunity to write another article to introduce the logic o

Microsoft's entity Framework is being watched and used by more and more people, and the entity Framework7.0 version is about to be released. Although it is open source, unfortunately, there is no book about it, let alone a good book, probably because the EF version of the update is too fast, no one would like to spend time translating foreign books on EF. The use

rules, and other aspects can be consistent and can be developed quickly. In addition, this layered mode is also a common layered structure. Can the Entity Framework we want to introduce be constructed in this way? Can I develop the overall framework based on the template generated by the code generation tool? The following describes the implementation process of

rules, and other aspects can be consistent and can be developed quickly. In addition, this layered mode is also a common layered structure. Can the Entity Framework we want to introduce be constructed in this way? Can I develop the overall framework based on the template generated by the code generation tool? The following describes the implementation process of

]. [DepartmentID] = @p__linq__1) as [Project1] ORDER by [Project1]. [CourseID] AscYou can see that the query contains a join connection query to load the department and course data.Delete the var sql = conrses in the code. ToString ();Warehouses and JobsUnitModeMany developers implement warehouse and work cell patterns as wrappers, which tend to create an abstraction layer between the application's data access layer and the business logic layer. Implementing these patterns helps isolate the appl

work class, just as it does with EF. The attributes in Entity Framework 6 allow you to implement TDD without having to write warehouse code. proxy classWhen the Entity Framework creates a solid instance (for example, when you run a query), it always creates an inst

The formation of Entity Framework object Framework-Summary of several experiences in Entity Framework Development, entityframework Some time ago, I made some research on the Entity Framework