恒定错误中的新行

问题描述

我正在编写一个 c# 代码，我在其中从数据库中获取值并使用它.我面临的问题如下.

I am writing a c# code in which i am fetching values from the database and using it. The problem i am facing is as below.

如果我从数据库中获取的值是:

If my fetched value from the database is :

 string cat1 = "sotheby's";

现在在使用这只猫时，我想在单引号之前插入一个转义字符，为此我编写了以下代码:

now while using this cat i want to insert an escape character before single quote, to achieve this i have written the below code:

  string cat1 = "sotheby's";
                    if (cat1.Contains("'")) {
                        var indexofquote = cat1.IndexOf("'");
                        cat1.Insert(indexofquote-1,"");
                        var cat2 = cat1;
                    }

插入行中的错误上升，反斜杠(转义字符).错误是常量中的新行.请帮助我如何更正此错误.

The error rises in insert line, the backslash(escape character). The error is New Line in Constant. Please help me how to correct this error.

推荐答案

你不能只用 C# 代码编写 "".这将产生常量中的新行"错误，因为它转义"了第二个引号，因此它不计算在内.并且字符串没有关闭.

You can't just write "" in C# code. That will produce the "New Line in Constant" error because it 'escapes' the second quote so that it doesn't count. And the string isn't closed.

使用 "\" (自行转义 )
或使用 @""(逐字字符串).

Use either "\" (escaping the with itself)
or use @"" (a verbatim string).

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