validation expression for multiline textbox

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validation expression for multiline textbox allowed special char but not allowed character.

Posted 16-Apr-12 2:21am

ravijain03

Updated 16-Apr-12 2:53am

CPallini

v3

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hamid-shrk 16-Apr-12 8:29am

hi,
what is your regular expersion for not allowed characters?

vino2012 16-Apr-12 9:49am

Don't ask same question, Update changes to your question on existing.....

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Amrut Bidri · Answer 1 · 2012-04-24T23:37:00

Use this javascript function with your textbox control onkeypress event
i.e. onKeyPress="return checkCharacters(event)" in CS

C#

function checkCharacters(evt) {
    evt = (evt) ? evt : window.event
    var charCode = (evt.which) ? evt.which : evt.keyCode
    if (charCode != 32 && charCode > 31 && (charCode < 65 || charCode > 90) && (charCode < 97 || charCode > 122)) {
        status = "This field accepts numbers only."
        return false
    }

    status = ""
    var name = document.getElementById("txtloginID");
    name.innerHTML = Server.HtmlDecode(name);
    return true
}

hope this will help you thanks