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博客园 - IamV

ADO.NET Entity Framework: 由 Entity Object 執行 SQL 指令 search something from db How to Embed Silverlight Content in HTML [转]python文件操作/打开/删除文件/压缩文件 Flash与3D编程探秘 - 文章目录 silverlight RenderTransform 后台动画设置 2104 Couldn't download the silverlight application Cannot connect to external websites - WebClient - IamV .NET下多线程中设置按钮的文本 - IamV - 博客园 [Desklighter]在桌面上运行你的Silverlight文件 - IamV [转]Silverlight 2.0 正式版跨域提交数据 - IamV Application.DoEvent() - IamV 转:C#线程调用带参数的方法 - IamV [转]深入了解字符集和编码 Office SharePoint Server Search与Windows SharePoint Services Search - IamV 调用WCF返回Josn的两种方式 - IamV asp.net Excel_MyTest - IamV SharePoint-Server Farm Configuration Not Complete - IamV Using JSON with ASP.NET 3.5 - IamV
Expression<Func<int, bool>>与<Func<int, bool>
IamV · 2011-03-25 · via 博客园 - IamV

Expression<Func<int, bool>>是表达式,
<Func<int, bool>是委派(delegate)
Expression编译后就会变成delegate,才能运行。
比如 Expression<Func<int, bool>> ex = x=>x < 100;
x=>x < 100    ---> x是输入参数 int类型,x<100是函数体,返回bool类型
Func<int, bool> func = ex.Compile();
然后你就可以调用func:
func(5) //-返回 true
func(200) //- 返回 false
而表达式是不能直接调用的。

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