c# - C#中 "@"是什么意思

Question

新学员的快速问题，
C# 代码中“@”的含义是什么？

例子:

ClientDataSource.Where = @"it.ClientID==1";
cont.Notes = @"";
Response.Redirect(@"~/Default.aspx");

谢谢!

Answer 1

那是一个 verbatim string literal .

MSDN describes it as such :

Use verbatim strings for convenience and better readability when the string text contains backslash characters, for example in file paths. Because verbatim strings preserve new line characters as part of the string text, they can be used to initialize multiline strings. Use double quotation marks to embed a quotation mark inside a verbatim string.

@也可用于创建与保留字匹配的标识符: 2.4.2 Identifiers

例如:

var class = "Reading"; // compiler error
var @class = "Math"; // works