How could i make a textbox that accepts only numeric values?

Question

I want to make a textbox that allows only numeric values to be entered. how to achieve this?

score 4 · Answer 1 · edited May 23 '17 at 12:13

4

use RegularExpressionValidator

<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:RegularExpressionValidator ID="RegularExpressionValidator1" ControlToValidate="TextBox1" runat="server" ErrorMessage="Only Numbers allowed" ValidationExpression="\d+"></asp:RegularExpressionValidator>

How to allow only integers in a textbox?

edited May 23 '17 at 12:13

Community

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answered Mar 11 '14 at 07:55

Ashwini Verma

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score 2 · Answer 2 · answered Mar 11 '14 at 07:43

2

In ASP.NET try this:

<asp:CompareValidator runat="server" Operator="DataTypeCheck" Type="Integer" 
 ControlToValidate="TxtBox" ErrorMessage=Error" />

answered Mar 11 '14 at 07:43

Rahul Tripathi

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score 0 · Answer 3 · answered Mar 11 '14 at 07:42

0

You could use the ASP.NET Regular Expression Validator and write a RegEx that only accepts numeric values.

If you want to intercept keystrokes, so that only numerical keys are entered, you'll have to use JavaScript (I wouldn't do that).

answered Mar 11 '14 at 07:42

Alexander

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score 0 · Answer 4 · answered Mar 11 '14 at 07:47

0

dear you can do this by jquery try this if you are using jquery

$(document).ready(function() {
$("#txtboxToFilter").keydown(function (e) {
    // Allow: backspace, delete, tab, escape, enter and .
    if ($.inArray(e.keyCode, [46, 8, 9, 27, 13, 110, 190]) !== -1 ||
         // Allow: Ctrl+A
        (e.keyCode == 65 && e.ctrlKey === true) || 
         // Allow: home, end, left, right
        (e.keyCode >= 35 && e.keyCode <= 39)) {
             // let it happen, don't do anything
             return;
    }
    // Ensure that it is a number and stop the keypress
    if ((e.shiftKey || (e.keyCode < 48 || e.keyCode > 57)) && (e.keyCode < 96 || e.keyCode > 105)) {
        e.preventDefault();
    }
});
});

answered Mar 11 '14 at 07:47

Developerzzz

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Why JQUERY? OP has not tagged it! – Rahul Tripathi Mar 11 '14 at 07:48
dear its a suggestion if its good for him then he will tak it as i ask in my answer if you use jquery then use it – Developerzzz Mar 11 '14 at 07:49
Thank you. I don't have knowledge of Jquery, I'm Just Novice to programming with having prior knowledge of C#, Sql Server. though I Appreciate your help. – Nirav Darji Mar 11 '14 at 07:50

score 0 · Answer 5 · answered Mar 11 '14 at 08:31

try below code

<asp:TextBox ID="txtID" runat="server"></asp:TextBox>
<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ValidationGroup="VGrpSave" SetFocusOnError="false" Display="None" ErrorMessage="Only numeric values are allowed" ControlToValidate="txtID" ValidationExpression="\d*"></asp:RegularExpressionValidator>
<asp:Button ID="btnSubmit" runat="server" ValidationGroup="VGrpSave" Text="Submit"></asp:Button>
<asp:ValidationSummary ID="ValidationSummary1" runat="server" DisplayMode="List" ShowMessageBox="True" ShowSummary="false" ValidationGroup="VGrpSave" />

How could i make a textbox that accepts only numeric values?

5 Answers5