c# - 添加了来自变量的文本的多行字符串

Question

我知道这会起作用:

string multiline_text = @"this is a multiline text
this is line 1
this is line 2
this is line 3";

我怎样才能完成以下工作:

string a1 = " line number one";
string a2 = " line number two";
string a3 = " line number three";

string multiline_text = @"this is a multiline text
this is " + a1 + " 
this is " + a2 + " 
this is " + a3 + ";

是否可以不将字符串拆分为多个子字符串，每行一个？

Answer 1

一种选择是改用字符串格式。在 C# 6 之前:

string pattern = @"this is a multiline text
this is {0}
this is {1}
this is {2}";

string result = string.Format(pattern, a1, a2, a3);

在 C# 6 中，您可以使用内插的逐字字符串文字:

string pattern = $@"this is a multiline text
this is {a1}
this is {a2}
this is {a3}";

请注意 $@ 必须完全一样 - 如果您尝试使用 @$，它将无法编译。