how to allow characters, space and dot in regular expression?

Question

ValidationExpression=\"^[a-zA-Z ]+$\"

this is my current regular expression but it does not accept .(dot). I need to use it for names. like \"R

Answer 1

Validation for must contain a number, a character and a dot. Sometimes it must include a space.

For example:

version1.1.1-----valid
            version 1.1.1---valid
              v1.1.----------not valid(not end with dot)
             .v1.1--------not valid(not start with dot)
               v1----valid
               version 12.1.1--------valid

It must contain character and number dot and space are necessary if its dot not start with dot and not end with dot

Answer 2

The following expression gets all

• characters (a-zA-Z)
• whitespaces (\s) and
• dots (\.)

between the string beginning (^) and end ($):

The '@' is necessary to quote the backslashes inside the string.

ValidationExpression=@"^[a-zA-Z\s\.]+$"

Answer 3

This should work:

/[a-zA-Z]|\d|\s|\.*/

• Any letter a-z
• Any digit 0-9
• Any whitespace
• Any dots