.NET Regex

System.Text.RegularExpressions .NET Regex.Replace

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Remove all non alphanumeric characters from a string except dash & space symbol

Replace this Regex with an empty string + Compiled flag

Tags: #alphanumeric, #characters, #chars, #dash, #remove, #replace, #space, #string. Views: 23855. stackoverflow, 7/12/2015
Link 1: http://www.systemtextregularexpressions.com/r11/remove-all-non-alphanumeric-characters-from-a-string-except-dash-space-symbol
Link 2: http://www.systemtextregularexpressions.com/r11 (short)
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    Length: 0b, Line: 1, Cursor: 0

    RegexOptions

    IsMatch=true

    Result

    I want to remove all special characters from a string. Allowed characters are AZ uppercase or lowercase numbers 09 underscore _ or the dot sign .

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    Source code

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    //.NET Regex.Replace Online Tester: www.systemtextregularexpressions.com

    //Namespace
    using System.Text.RegularExpressions;

    //Regex Pattern
    string pattern = @"[^a-zA-Z0-9_. ]+";

    //Regex example #1
    Regex r = new Regex(@"[^a-zA-Z0-9_. ]+", RegexOptions.Compiled);
    string result1 = r.Replace("input text", "replacement text");

    //Regex example #2
    string result2 = Regex.Replace("input text", @"[^a-zA-Z0-9_. ]+", "replacement text", RegexOptions.Compiled);
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    '.NET Regex.Replace Online Tester: www.systemtextregularexpressions.com

    'Namespace
    Imports System.Text.RegularExpressions

    'Regex Pattern
    Dim pattern As String = "[^a-zA-Z0-9_. ]+"

    'Regex example #1
    Dim r As Regex = New Regex("[^a-zA-Z0-9_. ]+", RegexOptions.Compiled)
    Dim result1 As String = r.Replace("input text", "replacement text")

    'Regex example #2
    Dim result2 As String = Regex.Replace("input text", "[^a-zA-Z0-9_. ]+", "replacement text", RegexOptions.Compiled)