DebuggerDisplay 指令是否“,nq"只对字符串有效? [英] Does the DebuggerDisplay directive ",nq" only have effect for strings?

问题描述

我正在编写一些代码来自动解析/评估 DebuggerDisplay 字符串以进行单元测试.我很好奇，,nq 指令是否只对字符串有效?我看到如果我写

I'm writing some code to automatically parse/evaluate DebuggerDisplay strings for unit testing purposes. I'm curious, does the ,nq directive only have effect for strings? I see that if I write

[DebuggerDisplay("{c,nq}")]
public class D { public C c = new C(); }

public class C { }

然后一个 new D() 将在调试器中显示为 {C}.从显示字符串中删除 ,nq 具有相同的效果.仅当我将 c 的类型更改为字符串时，就像这样

Then a new D() will present as {C} in the debugger. Removing the ,nq from the display string has the same effect. Only if I change the type of c to a string, like this

[DebuggerDisplay("{c,nq}")]
public class D { public string c = "foo"; }

删除/保留 ,nq 似乎有效果(它分别导致 "foo" 和 foo).那么 ,nq 仅在您尝试显示字符串字段/成员时才重要吗?

does removing/keeping ,nq seem to have effect (it results in "foo" and foo, respectively). So does ,nq only matter when you're trying to display a string field/member?

推荐答案

'nq' 字面意思是无引号"(从对象值中去除前导引号).所以，是的，仅当尝试显示字符串成员时.

'nq' literally means 'no quotes' (strip leading quotes from object value). So, yes, only when trying to display string members.

https://blogs.msdn.microsoft.com/jaredpar/2011/03/18/debuggerdisplay-attribute-best-practices/

这篇关于DebuggerDisplay 指令是否“,nq"只对字符串有效?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！