Regex auto Uppercase and not allow space in text edit c#

Question

([A-Z0-9]){0,20}

([A-Z0-9]|\s){0,50} // allow space

([A-Z0-9]|\s|\p{L}){0,50} // ALLOW UNICODE

(\p{Lu}|\s)+ //allow unicode

(\p{Lu}|\s|[0-9])+ //alow number

Answer 1

[0-9]*(\.?[0-9]{1,4}) //Decimal (xxx,4)

Comments

(\w|[.\-])+@(\w|[\-]+.)*(\w|[\-]){2,63}.[a-zA-Z]{2,6}.[a-zA-Z]{2,6} //Email