如何使用带插值的逐字字符串?

How to use verbatim strings with interpolation?

C# 6 中有一项新功能:内插字符串。这些使您可以将表达式直接放入代码中。

而不是依赖索引:

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

以上变为:

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

但是,我们有很多字符串跨多行使用逐字字符串(主要是 SQL 语句),如下所示:

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

将这些恢复为常规字符串似乎很混乱:

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

如何同时使用逐字字符串和内插字符串?

您可以将 $@ 前缀应用于同一字符串:

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

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