For this tutorial you will need access to a web accessible database. As mentioned in the introduction, I use web hosting account from discountasp.net with a SQL Server 2008 add-on, but there are many options of hosting providers to choose from. To establish a connection with your remote d...
在上篇文章中"LINQ To SQL Discriminator Column Example - Inheritance Mapping Tutorial”,我可以很容易的改变Employee实体的EmployeeType属性为一个枚举EmployeeType,LINQ To Sql会自动去解决枚举和int之间的转换。 在数据库中EmployeeType字段是一个int类型: 我可以添加一个枚举类型,叫EmployeeType: publicenumEmployeeT...
The goal of this tutorial is to explain one method of creating model classes for an ASP.NET MVC application. In this tutorial, you learn how to build model c... (C#)
This tutorial will show you how to create a DotNetNuke module using LINQ to SQL. This will greatly speed module development. Also see: Creating a DotNetNuke Module using LINQ to SQL (Part 2) SETUP Follow one of the the options below to install DotNetNuke and to create a DotNetNuke Website...
En LINQ to SQL, el modelo de datos de una base de datos relacional se asigna a un modelo de objetos expresado en el lenguaje de programación del programador. Cuando la aplicación se ejecuta, LINQ to SQL convierte a SQL las consultas integradas en el lenguaje en el modelo de objetos ...
First let's open up the generated LINQ to SQL classes by opening the .Designer.vb file under the dbml file (if you don't see the designer file, just click the "show all files" button on the Solution Explorer tool strip first). If we take a look at our Order class we will see ...
This tutorial has major potential for what I'm trying to do... but what if your tables aren't within the .dbml? I'm just straight calling a sproc and need to access multiple result-sets.Anonymous December 20, 2010 Thanks. The solution provided is too cool. But what will happen, whe...
LINQ to SQL is language-agnostic. Any language built to provide Language-Integrated Query can use it to enable access to information stored in relational databases. The samples in this document are shown in both C# and Visual Basic; LINQ to SQL can be used with the LINQ-enabled version of ...
A tutorial that walks through adding/updating/deleting data in your database with LINQ to SQL while keeping your class relationships (M:M, 1:M, and M:1) synchronized. Download demo project - 592 KB Download source - 598 KB Note: Requires SQL Server Express 2008 and .NET 3.5 to run....
ToList(); EF Core 和 LINQ 在.NET 应用程序开发中提供了无与伦比的便利性和高效性,但性能优化需要精心考量。通过遵循所讨论的最佳实践,包括谨慎使用 AsNoTracking、批量操作、投影以及预编译查询等,开发人员可以增强应用程序的性能和可扩展性。在简单性与性能之间找到平衡,能够确保应用程序在需求增长时依然健壮、...