Validate the textbox value after ctrl+v

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Hi,

I have to validate the textbox to enter only alpha numeric characters.
The function validateAlphaNumeric(evt, txtbox) will fire onkeypress event on textbox.
Below is the function written in javascript.

But i am not able to get the value of the textbox if i do Ctrl+V. i need to validate if user pastes.
Can any one suggest me on this?

C#

function validateAlphaNumeric(evt, textBox) {
        /*  File Description    :   Numbers,Characters,Hyphen(-),Slash(/)and Space */
        var charCode;   

        charCode = (evt.which) ? evt.which : window.event.keyCode;

        if (charCode >= 97 && charCode <= 122 || charCode >= 65 && charCode <= 90 || charCode == 8 || charCode >= 48 && charCode <= 57 || charCode == 45) {
            return true;
        }
        else {
            var errorMsg = document.getElementById(textBox.id + 'Error');
            if (errorMsg != null) {
                errorMsg.innerText = "Please Enter Alpha – Numeric Characters only";
            }
            return false;
        }        
    }

Thanks in advance

Posted 21-May-14 20:05pm

Member 9907886

Updated 21-May-14 20:08pm

Karen Mitchelle

v2

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Ajith K Gatty 22-May-14 2:18am

Hello..If you want alphanemerics only, why dont you use /\w+/???

Member 9907886 22-May-14 3:10am

Yup...But if I paste some special characters instead of typing then i dont get the value of the textbox....Instead it shows Null.

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Xiao Ling · Answer 1 · 2014-05-21T20:28:00

Solution 1

You can read this article - Javascript Key Event Test Script[^]. Get the values of Ctrl + V.

Posted 21-May-14 20:28pm

Xiao Ling

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Member 9907886 22-May-14 2:31am

Thanks for the reply...
but i didnt get where to write the code?"textInput Data"
How to get this value?

Thanks,

manvendra patel · Answer 2 · 2014-05-21T20:43:00

Solution 2

restrict to paste in textbox .

<asp:textbox id="txtrepass" runat="server" cssclass="txtbx2" width="164px" textmode="Password" oncopy="return false" onpaste="return false" oncut="return false" onkeydown="return DisableCopyPaste(event)" onmousedown="return DisableCopyPaste (event)" >

Posted 21-May-14 20:43pm

manvendra patel

Updated 21-May-14 20:44pm

v2

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Member 9907886 22-May-14 2:44am

Hi Manvendra,
I need Copy and Paste... I should not disable that...
But after paste operation i need to validate that value.

Thanks....

Bh@gyesh 22-May-14 3:03am

try to call validate event on "onpaste" event instead of "return false"

Member 9907886 22-May-14 4:34am

Hmmm .... i got another option to get the value...
event.currentTarget.value - u will get the value of the control...
Based on this I may need to change the code...

Thanks,

Yash Raichura · Answer 3 · 2014-09-11T02:29:00

In My Code I Had this ...
So It Might Help You..
..

C#

$(document).ready(function()
{
    var ctrlDown = false;
    var ctrlKey = 17, vKey = 86, cKey = 67;

    $(document).keydown(function(e)
    {
        if (e.keyCode == ctrlKey) ctrlDown = true;
    }).keyup(function(e)
    {
        if (e.keyCode == ctrlKey) ctrlDown = false;
    });

    $(".no-copy-paste").keydown(function(e)
    {
        if (ctrlDown && (e.keyCode == vKey || e.keyCode == cKey)) return false;
    });
});

..
Thanks

Validate the textbox value after ctrl+v

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