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Filtering non numeric charactors

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  • C Offline
    C Offline
    Charith Jayasundara
    wrote on last edited by
    #1

    Hi, I want to filter non numeric characters in one of my text boxes (windows form). I used following code for that. ________________________________________________________________________________________________ if ((e.KeyCode >= Keys.D0 && e.KeyCode <= Keys.D9) || (e.KeyCode >= Keys.NumPad0 && e.KeyCode <= Keys.NumPad9) || (e.KeyCode == Keys.Back) || ((e.KeyCode == Keys.Oemcomma || e.KeyCode == Keys.OemPeriod || (e.KeyCode == Keys.Decimal)) && (txtNetAssetValue.Text.IndexOf(",") == -1 && txtNetAssetValue.Text.IndexOf(".") == -1))) ________________________________________________________________________________________________ I could filter all the non-numeric characters except "!@#$%^&*()_+" . Can you tell me the group they belonging? Thanks!!!:)

    jayasshc

    C 1 Reply Last reply
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    • C Charith Jayasundara

      Hi, I want to filter non numeric characters in one of my text boxes (windows form). I used following code for that. ________________________________________________________________________________________________ if ((e.KeyCode >= Keys.D0 && e.KeyCode <= Keys.D9) || (e.KeyCode >= Keys.NumPad0 && e.KeyCode <= Keys.NumPad9) || (e.KeyCode == Keys.Back) || ((e.KeyCode == Keys.Oemcomma || e.KeyCode == Keys.OemPeriod || (e.KeyCode == Keys.Decimal)) && (txtNetAssetValue.Text.IndexOf(",") == -1 && txtNetAssetValue.Text.IndexOf(".") == -1))) ________________________________________________________________________________________________ I could filter all the non-numeric characters except "!@#$%^&*()_+" . Can you tell me the group they belonging? Thanks!!!:)

      jayasshc

      C Offline
      C Offline
      Christian Graus
      wrote on last edited by
      #2

      try Char.IsNumeric and Char.IsControl and then add your check for decimal characters.

      Christian Graus - Microsoft MVP - C++ "also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

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