行在C＃中继续字符

我们有一个包含很长string的variables的unit testing。

问题是如何在代码中编写这些代码，而不存在换行符问题或代码难以阅读。

在VB中有一行继续字符，在C＃中有一个equivilant？

Answer 1

C＃将允许你有一个string拆分成多行，这个术语被称为verbatim literal ：

 string myString = @"this is a test to see how long my string can be and it can be quite long"; 

如果您正在寻找VB的替代方法，请使用+join您的行。

Answer 2

string常量

只需使用+运算符并将string分解为可读的行。 编译器会提取string是不变的，并在编译时连接它们。 请参阅MSDN C＃编程指南。

例如

 const string myVeryLongString = "This is the opening paragraph of my long string. " + "Which is split over multiple lines to improve code readability, " + "but is in fact, just one long string."; 

IL_0003: ldstr "This is the opening paragraph of my long string. Which is split over multiple lines to improve code readability, but is in fact, just one long string."

stringvariables

请注意，使用string插值将值replace为您的string时， $字符需要在需要进行replace的每行之前：

 var interpolatedString = "This line has no substitutions. " + $" This line uses {count} widgets, and " + $" {CountFoos()} foos were found."; 

但是，这会对多次调用string.Format和string的最终串联（用***标记）产生负面的性能结果，

 IL_002E: ldstr "This line has no substitutions. " IL_0033: ldstr " This line uses {0} widgets, and " IL_0038: ldloc.0 // count IL_0039: box System.Int32 IL_003E: call System.String.Format *** IL_0043: ldstr " {0} foos were found." IL_0048: ldloc.1 // CountFoos IL_0049: callvirt System.Func<System.Int32>.Invoke IL_004E: box System.Int32 IL_0053: call System.String.Format *** IL_0058: call System.String.Concat *** 

尽pipe你可以使用$@来提供一个单一的string，并避免性能问题， 除非空格被放在{} （这看起来很古怪，IMO），这与Neil Knight的答案有相同的问题，因为它将包括任何空格在线故障：

 var interpolatedString = $@"When breaking up strings with `@` it introduces <- [newLine and whitespace here!] each time I break the string. <- [More whitespace] {CountFoos()} foos were found."; 

注入的空白很容易被发现：

 IL_002E: ldstr "When breaking up strings with `@` it introduces <- [newLine and whitespace here!] each time I break the string. <- [More whitespace] {0} foos were found." 

另一种方法是恢复到string.Format 。 在这里，根据我的初始答案，格式化string是一个单一的常量：

 const string longFormatString = "This is the opening paragraph of my long string with {0} chars. " + "Which is split over multiple lines to improve code readability, " + "but is in fact, just one long string with {1} widgets."; 

然后评估如下：

 string.Format(longFormatString, longFormatString.Length, CountWidgets()); 

但是，考虑到格式化string和replace令牌之间的潜在分离，这仍然可能是棘手的。

Answer 3

你可以使用逐字文字：

 const string test = @"Test 123 456 "; 

但是第一行的缩进是棘手的/丑陋的。

Answer 4

 @"string here that is long you mean" 

但要小心，因为

 @"string here and space before this text means the space is also a part of the string" 

它也逃避了string中的东西

 @"c:\\folder" // c:\\folder @"c:\folder" // c:\folder "c:\\folder" // c:\folder 

有关

• 在C＃中，variables名之前的@符号是什么意思？
• MSDNstring参考

Answer 5

您必须使用以下方法之一：

  string s = @"loooooooooooooooooooooooong loooooong long long long"; string s = "loooooooooong loooong" + " long long" ; 

Answer 6

如果你声明不同的variables，那么使用下面的简单方法

 Int salary=2000; String abc="I Love Pakistan"; Double pi=3.14; Console.Writeline=salary+"/n"+abc+"/n"+pi; Console.readkey();