Contains cur didn't seem to work for me in. NET 4. Got a message "Cannot access private method here". Came up with another example posted below. Add using System. Linq to the top. A different approach that is compatible with. See my comments above explaining the need. Replace item. Roland Schaer Roland Schaer 1, 1 1 gold badge 22 22 silver badges 30 30 bronze badges.
Except System. Benjamin Podszun Benjamin Podszun 9, 3 3 gold badges 32 32 silver badges 43 43 bronze badges.
I don't believe the Except method does what you were wanting here. It doesn't really work with duplicates. It does not also return those elements in second that do not appear in first. ChronoPositron: Enlighten me: What is the the problem? Example 2: Create a file named. Skip to main content. Last update: Under Windows using the FAT file system file and folder names may be up to characters long Under Windows using the NTFS file system file and folder names may be up to characters long Under Window the length of a full path under both systems is characters In addition to these characters, the following conventions are also illegal: Placing a space at the end of the name Placing a period at the end of the name The following file names are also reserved under Windows: com1, com2, com3, com4, com5, com6, com7, com8, com9, lpt1, lpt2, lpt3, lpt4, lpt5, lpt6, lpt7, lpt8, lpt9, con, nul, and prn Note: The previous conventions are true only if the application used in managing them is does not use the Unicode API.
The only illegal character for file and folder names in Mac OS X is the colon ":" File and folder names are not permitted to begin with a dot ". Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment. You signed in with another tab or window. Reload to refresh your session.
You signed out in another tab or window. Use any character in the current code page for a name, including Unicode. For more information about file streams, see File Streams. Also avoid these names followed immediately by an extension; for. Contains value. ToArray ; if invalidChars. Format CultureInfo. CurrentCulture, invalidChars.
InvalidCharacter : CommonResources. InvalidCharacters, StringExtensions. JoinQuoted ",", "'", invalidChars. Backs Backs Sandor Davidhazi Sandor Davidhazi 1 1 gold badge 9 9 silver badges 20 20 bronze badges.
Given that. GetInvalidFileNameChars is best since it will contain the knowledge of what is or isn't valid on the filesystem your program is being run on. Rolling your own with regex is reinventing the wheel, and shifting a platform issue into your own code. I find them invaluable since regexes are tricky things, and full of subtlety that can trip you up easily, giving you a regex that behaves in some wildly unexpected way with edge cases. My favourite is regex I also quite like debuggex.
TryCreate pathString, UriKind. Daniel Scott Daniel Scott 1, 15 15 silver badges 13 13 bronze badges. Zananok Zananok 1 1 gold badge 2 2 silver badges 12 12 bronze badges. IsNullOrEmpty newValue? Note: Methods Test1 and Test2 are both proposed in this post. Second Run removing invalid chars, iterations Note: Test1 will not remove, only replace.
Invoke testString, newValue ; sw. Stop ; Console. Elapsed ; Console. Join newValue, filename. Escape InvalidCharsValue ; return Regex. Replace fileName, regex, newValue, RegexOptions. CultureInvariant ; return removeInvalidChars. Escape new String System.
Result on my laptop for iterations : StringHelper. RemoveInvalidCharacters 1: ms StringHelper. RemoveInvalidCharacters 2: ms StringHelper. RemoveInvalidCharacters 3: ms StringHelper. RemoveInvalidCharacters 4: ms StringHelper. Fabske Fabske 1, 16 16 silver badges 29 29 bronze badges. Aggregate string. Suplanus Suplanus 1, 15 15 silver badges 27 27 bronze badges.
I created an extension method that combines several suggestions: Holding illegal characters in a hash set Filtering out characters below ascii Since Path. GetInvalidFileNameChars does not include all invalid characters possible with ascii codes from 0 to In addition to the answer you've provided, please consider providing a brief explanation of why and how this fixes the issue. Empty; if! Concat originalString. RemoveInvalidChars ;. Simant Simant 2, 3 3 gold badges 23 23 silver badges 38 38 bronze badges.
Because every string is a path. Or why would it make sense to extend string for just one special case? Replace '"', ' '. Replace ':', ' '. Replace '? Replace ' ', ' '. Trim ;. Danny Fallas Danny Fallas 1 1 gold badge 5 5 silver badges 11 11 bronze badges.
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