了解引用类型和值类型之间的区别。

要知道事件是作为硬引用存储的(也就是说，要记得取消事件注册，否则应用程序将会泄漏内存)。

字符串是不可变的。

我在Scott Hanselman的博客上找到了这些列表:

伟大的。net开发人员应该知道什么(更多。net面试问题) ASP。NET面试问题

以下是我从这些文章中归纳出来的最重要的问题。我编辑并重新编排了它们。幸运的是，对于这些问题中的大多数，在Stack Overflow上已经有了很好的答案。只要按照链接(我会尽快更新它们)。

与平台无关的。net问题

What is the difference between a thread and a process? What is the difference between an EXE and a DLL? What is strong-typing versus weak-typing? What is the difference between a.Equals(b) and a == b? What is boxing? Is string a value type or a reference type? What is the Global Assembly Cache (GAC)? What problem does it solve? What is an Interface and how is it different from a Class? What is Reflection? Conceptually, what is the difference between early-binding and late-binding? When would using Assembly.LoadFrom or Assembly.LoadFile be appropriate? What is an Asssembly Qualified Name? Is it a filename? How is it different? How is a strongly-named assembly different from one that isn’t strongly-named? What does this do? sn -t foo.dll How does the generational garbage collector in the .NET CLR manage object lifetime? What is non-deterministic finalization? What is the difference between Finalize() and Dispose()? (external article) What is the difference between in-proc and out-of-proc? What technology enables out-of-proc communication in .NET? What is FullTrust? Do GAC’ed assemblies have FullTrust? What is the difference between Debug.Write and Trace.Write? When should each be used? What is the difference between a Debug and Release build? Is there a significant speed difference? Why or why not? What is the difference between: catch (Exception e) {throw e;} and catch (Exception e) {throw;} ? What is the difference between typeof(foo) and myFoo.GetType()? What is the purpose of XML Namespaces? What is the difference between an XML "Fragment" and an XML "Document"? (XML Basics) How would you validate XML using .NET?

ASP。网

What is a PostBack? What is ViewState? How is it encoded? Is it encrypted? Who uses ViewState? Why is it either useful or evil? What Session State providers are available in ASP.NET? What are the pros and cons of each? What is the OO relationship between an ASPX page and its CS/VB code behind file? How would one implement ASP.NET HTML output caching, caching outgoing versions of pages generated via all values of q= except where q=5 (as in http://localhost/page.aspx?q=5)? What are HttpHandlers? What are HttpModules? What is needed to configure a new extension for use in ASP.NET? For example, what if I wanted my system to serve ASPX files with a *.jsp extension? How do cookies work? What is an example of Cookie abuse? What kind of data is passed via HTTP Headers? How does IIS communicate at runtime with ASP.NET? Where is ASP.NET at runtime in the different versions of IIS (5 to 7)?

这是一个可变的问题，你现在不应该完全回答，但你应该在适当的时候回答:

“.NET框架提供了什么来完成任务X ?”

或者更具体地说:

" .NET框架是否包含一个做X的对象?"

例如，我最近花了几个小时开发了一个对象，该对象经过优化，可以存储一个布尔值数组并对其进行操作，例如执行集合的NOT、OR、XOR、and、设置所有值等。直到我完成了所有的单元测试，并将其调整到最佳性能，我才意识到我的“BoolArray”对象已经存在于. net框架中，名为“BitArray”。

这可能是一个很难回答的问题，因为很多时候关于使用什么对象/ helper的最佳答案是你不知道或不完全理解的。如果每个人都知道简单的StringBuilder(一个可以显著提高性能的基本工具)，. net世界将会多么美好。

我更喜欢给他一个问题，让他用。net的特性来解决它，你知道，为什么你认为这是最好的解决方案。

这将破解候选人几乎所有的能力，包括技术、分析和解决问题的能力，以及他解决问题的方法。

了解引用类型和值类型之间的区别。

要知道事件是作为硬引用存储的(也就是说，要记得取消事件注册，否则应用程序将会泄漏内存)。

字符串是不可变的。

以下是我用来筛选c#程序员职位的程序员的一些方法:

引用类型和值类型之间的区别是什么?

解释IDisposable接口，c#语言构造需要它，以及如何实现它。

如果将null作为参数传递给具有不允许该参数为空的契约的方法，您将抛出哪个异常?