C＃MVC，从web.config读取回车符

Question

I am trying to put a list of delimiters in a web.config file, one of the delimiters is a carriage return - \\r\\n . The web.config entry looks like this -

<add key="Separators" value=" |,|;|\r\n"/>

I am trying to read in the list using a call like the following -

string[] MySeparators = ConfigurationManager.AppSettings ConfigSettings.PartNumberSeparators].Split('|');

The list is being read, but the carriage return ends up containing extra back slashes and looks like this - \\\\r\\\\n

Is there some way to prevent this from happening?

Answer 1

You could try using XML entities 
 and 
 . Provided that the .NET configuration system supports resolving these entities, then these should appear as \\r\\n at runtime.

Answer 2

First, you forgot the | between \\n and \\r

Try writing a var like

>var test = "\";

this will give you an error, options are:

>var test = "\\";

>var test = @"\";

Try the second one

Answer 3

您可以使用System.Text.RegularExpressions.Regex.Unescape ，这样：

string[] MySeparators = Regex.Unescape(ConfigurationManager.AppSettings.ConfigSettings.PartNumberSeparators]).Split('|');