Use regular expression to replace first 3 digits : Regular Expression « Development Class « C# / C Sharp

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C# / C Sharp » Development Class » Regular Expression Screenshots  Use regular expression to replace first 3 digits using System; using System.Text.RegularExpressions; class RegexSubstitution {    public static void Main()    {       string testString1 = "1, 2, 3, 4, 5, 6, 7, 8";       Regex testRegex1 = new Regex( @"\d" );       Console.WriteLine( "Original string: " + testString1 );       Console.WriteLine( "Replace first 3 digits by \"digit\": " + testRegex1.Replace( testString1, "digit", 3 ) );    } }                     Related examples in the same category 1. Multiple different delimiters 2. Single space split 3. Multiple spaces, using \"[\\s]+\" 4. Single spaces, using () 5. Single spaces, using new Regex("( )") 6. Position and index 7. Regex and letter case 8. ((an)|(in)|(on)) 9. Gr(a|e)y 10. Define groups 'ing', 'in', 'n' 11. Leading space 12. Proper case match 13. Use | to combine different case 14. IP address 15. Multiple spaces, using \" \" 16. Use regular expression to replace chars 17. Use regular to replace strings 18. Use regular to replace word 19. Use regular to split string 20. Validate first name and last name 21. Validate address 22. Validate city name 23. Validate ZIP code 24. Validate Phone Number 25. Use regular to verify a date 26. HTML Parser