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How do I remove all non alphanumeric characters from a string except dash and space characters?
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A common solution to remove all non-alphanumeric characters from a String is with regular expressions. The idea is to use the regular expression [^A-Za-z0-9] to retain only alphanumeric characters in the string. You can also use [^\w] regular expression, which is equivalent to [^a-zA-Z_0-9] .
To remove all non-alphanumeric characters from a string, call the replace() method, passing it a regular expression that matches all non-alphanumeric characters as the first parameter and an empty string as the second. The replace method returns a new string with all matches replaced.
Non-alphanumeric characters can be remove by using preg_replace() function. This function perform regular expression search and replace. The function preg_replace() searches for string specified by pattern and replaces pattern with replacement if found.
Select the range that you need to remove non-alphanumeric characters from, and click Kutools > Text > Remove Characters. 2. Then a Delete Characters dialog box will appear, only check Non-alphanumeric option, and click the Ok button. Now all of the non-alphanumeric characters have been deleted from the text strings.
Replace [^a-zA-Z0-9 -] with an empty string.
Regex rgx = new Regex("[^a-zA-Z0-9 -]"); str = rgx.Replace(str, ""); If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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