how to validate textbox not to enter numbers in textbox

Posted by Shanky11 under JavaScript on 9/23/2013 | Points: 10 | Views : 2286 | Status : [Member] | Replies : 4

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function checkNum()
{

if ((event.keyCode > 64 && event.keyCode < 91) || (event.keyCode > 96 && event.keyCode < 123) || event.keyCode == 8)
return true;
else
{
alert("Please enter only char");
return false;
}

}
<asp:TextBox ID="txtcity" runat="server" onkeypress=" return checkNum();"></asp:TextBox>
Why its not working??????????????????

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Posted by: Bandi on: 9/23/2013 [Member] [MVP] Platinum | Points: 25

0	void NotNumberValidation(object sender, KeyPressEventArgs e) { if ((event.keyCode > 64 && event.keyCode < 91) \|\| (event.keyCode > 96 && event.keyCode < 123) \|\| event.keyCode == 8) return true; else { alert("Please enter only char"); return false; } } Mark This Response as Answer -- Chandu http://www.dotnetfunda.com/images/dnfmvp.gif Shanky11, if this helps please login to Mark As Answer. \| Alert Moderator

void NotNumberValidation(object sender, KeyPressEventArgs e)

        {

            if ((event.keyCode > 64 && event.keyCode < 91) || (event.keyCode > 96 && event.keyCode < 123) || event.keyCode == 8)

                return true;

            else {

                alert("Please enter only char");

                return false;

            }

        }

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Posted by: Bandi on: 9/23/2013 [Member] [MVP] Platinum | Points: 25

0	The code is also working for me..................... <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="NotToEnterNumerics.aspx.cs" Inherits="TextBoxValidation.NotToEnterNumerics" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> <script type="text/javascript"> function checkNum() { if ((event.keyCode > 64 && event.keyCode < 91) \|\| (event.keyCode > 96 && event.keyCode < 123) \|\| event.keyCode == 8) return true; else { alert("Please enter only char"); return false; } } </script> </head> <body> <form id="form1" runat="server"> <div> <asp:TextBox ID="txtcity" runat="server" onkeypress=" return checkNum();"></asp:TextBox> </div> </form> </body> </html> Mark This Response as Answer -- Chandu http://www.dotnetfunda.com/images/dnfmvp.gif Shanky11, if this helps please login to Mark As Answer. \| Alert Moderator

The code is also working for me.....................

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="NotToEnterNumerics.aspx.cs" Inherits="TextBoxValidation.NotToEnterNumerics" %>



<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">



<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

    <title></title>

    <script type="text/javascript">

        function checkNum() {



            if ((event.keyCode > 64 && event.keyCode < 91) || (event.keyCode > 96 && event.keyCode < 123) || event.keyCode == 8)

                return true;

            else {

                alert("Please enter only char");

                return false;

            }



        } 

    </script>

</head>

<body>

    <form id="form1" runat="server">

    <div>

        <asp:TextBox ID="txtcity" runat="server" onkeypress=" return checkNum();"></asp:TextBox>

    </div>

    </form>

</body>

</html>

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Posted by: Bandi on: 9/23/2013 [Member] [MVP] Platinum | Points: 25

0	--Alternate is as follows: <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="NotToEnterNumerics.aspx.cs" Inherits="TextBoxValidation.NotToEnterNumerics" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> <script type="text/javascript"> function validate(key) { //getting key code of pressed key var keycode = (key.which) ? key.which : key.keyCode; //comparing pressed keycodes if (!(keycode == 8 \|\| keycode == 46) && (keycode < 48 \|\| keycode > 57)) { return true; } else { alert("Please enter only char"); return false; } } </script> </head> <body> <form id="form1" runat="server"> <div> <asp:TextBox ID="txtcity" runat="server" onkeypress="return validate(event);"></asp:TextBox> </div> </form> </body> </html> Mark This Response as Answer -- Chandu http://www.dotnetfunda.com/images/dnfmvp.gif Shanky11, if this helps please login to Mark As Answer. \| Alert Moderator

--Alternate is as follows:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="NotToEnterNumerics.aspx.cs" Inherits="TextBoxValidation.NotToEnterNumerics" %>



<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">



<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

    <title></title>

    <script type="text/javascript">

        function validate(key) {

            //getting key code of pressed key

            var keycode = (key.which) ? key.which : key.keyCode;

            //comparing pressed keycodes

            if (!(keycode == 8 || keycode == 46) && (keycode < 48 || keycode > 57)) {

                return true;

            }

            else {

                    alert("Please enter only char");

                    return false;

                }

            }

    </script>

</head>

<body>

    <form id="form1" runat="server">

    <div>

        <asp:TextBox ID="txtcity" runat="server" onkeypress="return validate(event);"></asp:TextBox>

    </div>

    </form>

</body>

</html>

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Posted by: Bandi on: 9/24/2013 [Member] [MVP] Platinum | Points: 25

0	Click on "Mark As Answer" ( The above codes are working in my system) Mark This Response as Answer -- Chandu http://www.dotnetfunda.com/images/dnfmvp.gif Shanky11, if this helps please login to Mark As Answer. \| Alert Moderator

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