语言继承查询(Language Integrated Query, LINQ),在C#编程语言中集成了查询语法,可以用相同的语法访问不同的数据源,LINQ提供了不同数据源的抽象层,所以可以使用相同语法. public class Book { public int Id { get; set; } /// <summary> /// 书名 /// </summary> public string BookName { get; set; } /// <summary>
问题一: Cannot execute text selection: CS0009 Metadata file 'C:\Users\Kimisme\Documents\LINQPad Plugins\Framework 4.6\MyExtensions.FW46.dll' could not be opened -- PE image doesn't contain managed metadata. 处理: 进入目录:C:\Users\Kimisme\Documents\LINQPad Pl
1.首先定义一个图书类.专门存放图书的属性信息. 代码如下: //Book.cs using System; namespace LinqTest { public class Book { public string Name { get; set; } public string Author { get; set; } public decimal Price { get; set; } public DateTime ReleaseDate { get; set; } public
从自己的印象笔记里面整理出来,排版欠佳.见谅! 1.LINQ: 语言集成查询(Language Integrated Query) 实例: var q= from c in categories join p in products on c equals p.Category into ps select new{Category=c, Products=ps}; 2.LINQ 类型 LINQ to Objects(或称LINQ to Collection),这是LIN