如何在插值中使用逐字字符串?

问题描述

在C#6中，有一个新功能:内插字符串.这些使您可以将表达式直接放入代码中.

In C# 6 there is a new feature: interpolated strings. These let you put expressions directly into code.

而不是依赖索引:

string s = string.Format("Adding \"{0}\" and {1} to foobar.", x, this.Y());

以上内容变为:

string s = $"Adding \"{x}\" and {this.Y()} to foobar.";

但是，我们使用这样的逐字字符串(主要是SQL语句)在多行中有很多字符串:

However, we have a lot of strings across multiple lines using verbatim strings (mainly SQL statements) like this:

string s = string.Format(@"Result...
Adding ""{0}"" and {1} to foobar:
{2}", x, this.Y(), x.GetLog());

将它们恢复为常规字符串似乎很麻烦:

Reverting these to regular strings seems messy:

string s = "Result...\r\n" +
$"Adding \"{x}\" and {this.Y()} to foobar:\r\n" +
x.GetLog().ToString();

如何同时使用逐字和内插字符串?

How to use both verbatim and interpolated strings together?

推荐答案

您可以将 $ 和 @ 前缀都应用于同一字符串:

You can apply both $ and @ prefixes to the same string:

string s = $@"Result...
Adding ""{x}"" and {this.Y()} to foobar:
{x.GetLog()}";

由于被引入C#6 ，插入的逐字字符串必须以标记 $ @ ，但从C#8开始，您可以使用 $ @ 或 @ $ .

Since being introduced in C# 6, interpolated verbatim strings had to start with the tokens $@, but starting with C# 8, you can use either $@ or @$.

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