随笔分类 -  C#

摘要:1.Optional and Named Parameters calls these methods can optionally not specify some of the arguments, thereby accepting the default values. when you c 阅读全文
posted @ 2016-07-15 11:40 PanPan003 阅读(495) 评论(0) 推荐(0) 编辑
摘要:1.Constants is a symbol that has a never-changing value. its value must be determinable at compile time. 使用范围: 1.The compiler then saves the constant’ 阅读全文
posted @ 2016-07-14 17:51 PanPan003 阅读(186) 评论(0) 推荐(0) 编辑
摘要:1.The Different Kinds of Type Members 1.Constants:a symbol that identifies a never-changing data value.Constants are always associated with a type, no 阅读全文
posted @ 2016-07-12 15:19 PanPan003 阅读(255) 评论(0) 推荐(0) 编辑
摘要:1.Programming Language Primitive Types primitive types:Any data types the compiler directly supports. Primitive types map directly to types existing i 阅读全文
posted @ 2016-07-08 15:15 PanPan003 阅读(350) 评论(0) 推荐(0) 编辑
摘要:1.All Types Are Derived from System.Object The CLR requires all objects to be created using the new operator(Employee e = new Employee("ConstructorPar 阅读全文
posted @ 2016-07-07 16:07 PanPan003 阅读(256) 评论(0) 推荐(0) 编辑
摘要:the .NET Framework has in place to deal with versioning problems. Two Kinds of Assemblies, Two Kinds of Deployment weakly named assemblies 、 strongly 阅读全文
posted @ 2016-07-06 16:52 PanPan003 阅读(413) 评论(0) 推荐(0) 编辑
摘要:buliding types into a module: response files: the IL disassembler:ILDasm.exe add assemblies to a project by using the visual studio IDE using the asse 阅读全文
posted @ 2016-07-05 15:30 PanPan003 阅读(154) 评论(0) 推荐(0) 编辑
摘要:the native code generator tool:NGen.exe optimization tool:MPGO.exe 所有类型最终都继承自System.Object。则所有类型都有如下的特点: CLS: 阅读全文
posted @ 2016-07-04 17:41 PanPan003 阅读(160) 评论(0) 推荐(0) 编辑
摘要:含义 使用DataReader是一个比较节省服务器资源的选择。DataReader提供了一种只读的、只向前的数据访问方法,因此在访问比较复杂的数据,或者只是想显示某些数据时,DataReader再适合不过了。 datareader对象提供只读单向数据的快速传递,单向:您只能依次读取下一条数据;只读: 阅读全文
posted @ 2016-05-26 15:17 PanPan003 阅读(416) 评论(0) 推荐(0) 编辑

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