entity framework latest version

complex point query Statements (tables, multiple subqueries, conditional mates) is very painful, and to use the tool to see whether the generated statements are logical, and can not be constantly debugging (I think the function is debugging out, the brain hole big open people can skip);EF Replacement version is really a pit, if you want to upgrade the program's EF from the lower version to the higher

Let EF fly for a while: How to Use Entity Framework 6 to connect to the Sqlite database, entitysqliteObtain Sqlite 1. You can use the NuGet package to obtain it. It will also automatically download EF6. 2. Download the corresponding version on the Sqlite Official Website: http://system.data.sqlite.org/index.html/doc/trunk/www/downloads.wiki Note that each. net

Original article: http://longniezhang.blog.163.com/blog/static/146061662009719102423760/ Performance Test Analysis of ado.net, LINQ to SQL and Entity Framework Recently, many documents have been written, leading to the growth in Word and Excel usage. Considering the low efficiency of the methods used to read and write databases in the project, which affects the user experience, we decided to test whe

field: using (var ctx = new PortalContext()){ var citieNames = ctx.Cities .Where(c => c.ProvinceID == 3 c.ProvinceID > 10) .OrderBy(c => c.CityID) .Select(c => c.CityName); foreach (var cityName in citieNames) { Console.WriteLine(cityName); }} The LINQ Extension Method reads multiple fields: using (var ctx = new PortalContext()){ var cities = ctx.Cities .Where(c => c.ProvinceID == 3 c.ProvinceID > 1) .OrderBy(c => c.CityID) .Sele

ASP. NET MVC5 + EF6 getting started tutorial (5) Model and Entity Framework, mvc5ef6 Source: Slark. NET-blog Park http://www.cnblogs.com/slark/p/mvc-5-ef-6-get-started-model.html Previous section: ASP. net mvc 5 getting started tutorial (4) View and ViewBag Next section: ASP. NET MVC5 + EF6 getting started tutorial (6) Use Razor in View Download source code: Click here to download1. Create a Model The Model

the introduction in the above table, we should be able to understand the role of dbcontext dbset. How can we use dbcontext in our project? We can use the nuget tool to obtain dbcontext. I have already introduced the nuget tool in the previous blog article (you can also check it through Baidu ). The following is a diagram showing how to use ef4.3 (that is, how to add a reference containing dbcontext ). I. Highlights of dbcontext API Dbcontext APIs simplify interaction between object frameworks

Framework,N-tier improvements for Entity Framework In the two articlesEF has been discussed in n-layer applications. The most difficult part of EF in n-layer applications is that when updating an object, the original value (with the object before the new version) and the current value (the current object) must be giv

Preparations: Upgrade Visual Studio 2008 and. NET Framework 3.5 to SP1. Click to go to the upgrade address. Install SQL server 2005, and use the EXPRESS version of SQL SERVER in VS 2008. Download and append the database: Click to download DemoDb. Create a VB Application. Note that the target Framework must be set to vers