Allow only Numeric and minus symbol in textbox using ASP.Net

Sourav Kumar Das

7y2.5k.NET

Hi All,

How to allow only Numeric values and minus symbol in textbox using ASP.Net?

7 Replies

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Siddhartha Sharma7y ago
use below regex : only numeric and minus symbol

/^[0-9 -]+$/
+1
Sourav Kumar Das7y ago
Hi Puneet,

I have inserted those code in my Asp.Net but it didn't get worked out..
0
Puneet Kankar7y ago
Hi sourav, Go through this links running fine. http://jsfiddle.net/7XLqQ/3/
0
Sourav Kumar Das7y ago
Hi Puneet Kankar,

I have tried your code but i didn't get the correct result of it...
0
Jignesh Kumar7y ago
Hi Sourav,

Please find below link,

https://forums.asp.net/t/2053734.aspx?Enter+only+numbers+and+minus+sign+in+textbox

You can verify js online here
https://jsbin.com/calahideba/edit?html,output
0
Puneet Kankar7y ago
Please check below links for better understanding.
Asp.net code

"TextBox1" runat="server">
"RegularExpressionValidator1"
    ControlToValidate="TextBox1" runat="server"
    ErrorMessage="Only Numbers allowed"
    ValidationExpression="\d+">



or

javascript code

"txtinput" type="text" id="myInput" />

var input = document.getElementById("myInput");

input.onkeypress = function(e) {    e = e || window.event;
    var charCode = (typeof e.which == "number") ? e.which : e.keyCode;

    // Allow non-printable keys
    if (!charCode || charCode == 8 /* Backspace */ ) {
        return;
    }

    var typedChar = String.fromCharCode(charCode);

    // Allow numeric characters
    if (/\d/.test(typedChar)) {
        return;
    }

    // Allow the minus sign (-) if the user enters it first
    if (typedChar == "-" && this.value == "") {
        return;
    }

    // In all other cases, suppress the event
    return false;
};
http://jsfiddle.net/7XLqQ/3/
https://stackoverflow.com/questions/9732455/how-to-allow-only-integers-in-a-textbox
-1
Ashwin Chauhan7y ago
https://forums.asp.net/t/2053734.aspx?Enter+only+numbers+and+minus+sign+in+textbox

http://jsfiddle.net/7XLqQ/3/
0