How to add new character in the list of allowed characters in the script

Hello,

I assume you are using the C# language in our .NET Languages Add-on here?  That's not a valid string literal if you are, and that would definitely raise a syntax error.  You need to escape the backslash or do @"\" instead.

Hello Thank you for you reply.

Can you please let met know Is there any property that can be set from out side of the sytax editor in order to allow the "\" as valid string literal ?. Because if i use "\\" then we are getting different behaviour in our application.

Hello,

You never answered if you are using the C# language in our .NET Languages Add-on, or some other language.

If you are using our advanced C# language then no, it's lexing tokens programmatically according to the C# specification.  There isn't a way to modify that programmatic logic externally without source.  In C#, "\" isn't a valid string.  In that case, I would recommend you update your application logic to support "\\" or @"\" per the C# specification.

we have using the below script

DIM str as Message;      

str = RootFolderDrive + "\";

This is showing highlight error under "\".

In the code we have used the below patterngroup for string::

 lexicalPatternGroup = new DynamicLexicalPatternGroup(DynamicLexicalPatternType.Regex, "String", classificationTypeProvider.String);
 lexicalPatternGroup.TokenId = QuickScriptTokenId.String;
 lexicalPatternGroup.Patterns.Add(new DynamicLexicalPattern("\\\"((\\\\.)|[^\\\\\\\\\\\"])*\\\""));

Hello,

Do you want to allow a backslash to escape any characters at all?  Meaning do you want to always treat it as a normal character and not an escape marker?  If so, you could just change the pattern's interior between the outer quotes to look for any character that isn't a quote.