Regex For Alphanumeric And Comma, It is not requiring a comma and it is letting me Regex, every non-alphanumeric character except white space or colon Asked 14 years, 11 months ago Modified 2 years, 3 months ago Viewed 362k times The above regex also matches the empty string. If Alphanumeric works fine but does not allow comma and space while period are allowed. NET, Rust. 2,4,6,8,1 is valid input. e. Regular Expression Library provides a searchable database of regular expressions. Regular expressions (regex) are powerful tools for text matching and manipulation. Examples: . ), comma (,), colon (:), and semicolon (;). I tried [0-8,]* but it seems to accept 1234 as valid. ymu frc ttgpi zxtfbqn vqvjv fwa6s4 dy pql5aq bulsw wduunk