B4J Question String contain NO NUMBERS characters

Discussion in 'B4J Questions' started by petr4ppc, Jan 29, 2015.

  1. petr4ppc

    petr4ppc Active Member Licensed User

    Dear friends, please,

    is here some simple soulution how to recognize not number characters in string?

    For example if he string is "1254as5748"
    Here si "as" inside the string....I can not use this string...

    I need use only string with numbers....

    Or the best solution is
    1) get length of string
    2) check each character if it is number = the character contain 1,2,3,4,5,6,7,8,9,0
    3) delete or use this string

    Thank you very much
    Best regards
  2. rwblinn

    rwblinn Well-Known Member Licensed User


    use IsNumber, like
    Dim s As String = "1254as5748"
    Log(s & " is a number " & IsNumber(s)) ' False
    Dim s As String = "12545748"
    Log(s & " is a number " & IsNumber(s)) ' True
  3. petr4ppc

    petr4ppc Active Member Licensed User


    thank you very much, 100% solution, perfect ;)

    Best regards
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