How Can You Tell the Difference Between LINQ Methods and Query Builder Methods?
LINQ's method syntax looks very similar to the query builder methods,except for one big difference:the parameters.Theparameters of a LINQ method ara lambda expressions,whereas the parameters of the query builder methods are Entity SQL string expressions.A number of methods have the same name:Where , OrderBy, Select, and others. The compiler uses the parameters to determine which path to go down,in much the same way that the .NET compiler handles overloaded methods anywhere else.
How Can You Tell the Difference Between LINQ Methods and Query Builder Methods?的更多相关文章
- 记录一个EF连接查询的异常：the entity or complex type 'x' cannot be constructed in a linq to entities query
问题解决连接:https://stackoverflow.com/questions/5325797/the-entity-cannot-be-constructed-in-a-linq-to-ent ...
- Difference between LINQ to SQL and LINQ to Entity（DataContext and DbContext）
http://msdn.microsoft.com/en-us/library/cc161164.aspx http://stackoverflow.com/questions/2443836/wha ...
- Programming Entity Framework 翻译(1)-目录
1. Introducing the ADO.NET Entity Framework ado.net entity framework 介绍 1 The Entity Relationship Mo ...
- EF提供的三种查询方式
這邊簡單介紹一下,ADO.Net Entity Framework 提供的三種查詢方式, Linq to Entities Query Builder Mothed Entity SQL Langua ...
- EF提供的3中查询方式
1. Linq to Entities using (TestEntities te = new TestEntities()) { var user = from a in te.User wher ...
- LINQ Query Expressions
https://msdn.microsoft.com/en-us/library/bb397676(v=vs.100).aspx Language-Integrated Query (LINQ) is ...
- LINQ函数
LINQ函数虽然和LINQ语句实现了同样的功能,但LINQ函数使用起来更加快捷.学过数据库的感觉LINQ语句都不难,但语句比较长. 会LINQ函数,才算会LINQ. 1.Where(),结果过滤 Li ...
- Linq to Sql 聚合查询
//输出体重最大的同学,并要求最大体重得大于39,并按照体重大下,对分组结果进行排序. var result = from query in linq.Student group query by q ...
- C# ~ 从 XML 到 Linq 到 Linq to XML
.XML 可扩展标记语言 (Extensible Markup Language), 标记 (markup) 是关键部分,是标准通用标记语言 (Standard Generalized Markup ...
随机推荐
- E20180109-E
auxilary adj. 辅助的; 备用的,补充的; 附加的; 副的; n. 助动词; 辅助者,辅助人员; 附属机构,附属团体; 辅助设备;
- jsonp 监控简陋代码
url: window.location.href Agent: navigator.userAgent var tkInfo = { VisitUrl: window.location.href, ...
- ListView(4)取消GridView/ListView item被点击时的效果
方法一,在代码中设置 gridView.setSelector(new ColorDrawable(Color.TRANSPARENT)); listView.setSelector(new Colo ...
- 394 Decode String 字符串解码
给定一个经过编码的字符串,返回它解码后的字符串.编码规则为: k[encoded_string],表示其中方括号内部的 encoded_string 正好重复 k 次.注意 k 保证为正整数.你可以认 ...
- TFS修改了工作区
计算机修改名字后,更换了TFS工作区,但原工作区的有些文件忘记签入: 解决方案: 删除原工作区即可,实现:到TFS工作区 - “管理工作区”,选中“显示远程工作区”,找到原工作区,删除即可.
- java用匿名内部类实现多线程堆内存变量共享
匿名内部类介绍:http://www.cnblogs.com/nerxious/archive/2013/01/25/2876489.html 用Runnable模拟实现共享堆内存变量 import ...
- Eclipse开发工具介绍
Eclipse是一个基于Java的.开放源码的.可扩展的应用开发平台,它为编程人员提供了一流的Java集成开发环境(Integrated Development Environment,IDE).在E ...
- React Native组件的结构和生命周期
React Native组件的结构和生命周期 一.组件的结构 1.导入引用 可以理解为C++编程中的头文件. 导入引用包括导入react native定义的组件.API,以及自定义的组件. 1.1 导 ...
- Spring与Struts2集成开发
Struts2和Spring都是不错的开源框架,Spring与Struts2集成开发,把二者结合在一起使用,开发效果更佳,效率杠杠的.下面介绍一下如何将Spring与Struts2集成在一起开发.分七 ...
- Computed Properties vs Property Requirements - protocol
In addition to stored properties, classes, structures, and enumerations can define computed properti ...