How to give Validation to enter only numbers in Textbox.... not alphabets

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Dear Friends,

am working on asp.net c#, Sqlserver 2005.

I have a textbox on my webpage...How to Set the validation for that Textbox.

I need to enter only numbers in that textbox....it should not take alphabets.

If the user enters alphabets in that textbox...it must show a message. Please enter only numbers.

Please show me,

Thanks.

Posted 25-Jun-12 22:30pm

Ranjith Reddy CSE

Updated 15-Nov-16 23:00pm

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Sanjay Kunjam · Answer 1 · 2012-06-25T22:44:00

Solution 1

Try this..

Text box to accept only number[^]

Posted 25-Jun-12 22:44pm

Sanjay Kunjam

Prasad_Kulkarni · Answer 2 · 2012-06-25T23:03:00

Solution 4

Try this:

C#

void NumberValidation(object sender, KeyPressEventArgs e)
        {
            if ((e.KeyChar >= 48 && e.KeyChar <= 57) || e.KeyChar == 8)
            {
                e.Handled = false;
            }
            else
            {
                e.Handled = true;
            }
        }

Posted 25-Jun-12 23:03pm

Prasad_Kulkarni

Comments

Snehalata_Patil 15-Mar-13 6:44am

it works on my project.
but when i add it into database it does not work.
what to do???

Prasad_Kulkarni 15-Mar-13 7:10am

What does that means? Add into database means? You're getting only numeric values wherever you're trying to use this method, and just simply you need to pass it with query to database..

Snehalata_Patil 15-Mar-13 7:33am

sir, actually validations works on form.
but that particular entry doesn't save into database.
pls reply..

Prasad_Kulkarni 15-Mar-13 11:41am

Doesn't save means?? Is it throwing any error or what?

One more thing;
check your query [how you're sending this field to database],
check you database which is the type you have assigned to this field.

Vani Kulkarni · Answer 3 · 2012-06-25T22:54:00

Solution 2

Also go through below link:

http://techo.luefher.com/coding/javascript-js/how-to-allow-only-numbers-in-html-textbox-using-javascript/[^]
http://csharpdotnetfreak.blogspot.com/2011/10/numeric-number-only-textbox-javascript.html[^]

Posted 25-Jun-12 22:54pm

Vani Kulkarni

Hiren solanki · Answer 4 · 2012-06-25T23:01:00

Solution 3

Probably you could achieve it using Jquery[^] too.

Posted 25-Jun-12 23:01pm

Hiren solanki

AshishChaudha · Answer 5 · 2012-06-25T23:32:00

Solution 5

For this you can also use FilterTextboxExtender of Ajax. You can also set only for alphabets or both.

Posted 25-Jun-12 23:32pm

AshishChaudha

Rahul Rajat Singh · Answer 6 · 2012-06-25T23:48:00

This small javascript file contains already what you need. Get it from here and also find how to use it in the article text.

A Tiny Javascript Framework for Common Validation Scenarios.[^]

This contains all such common methods which are required by developers very often. I hope you will also find it useful.

sanwar_mal_jat · Answer 7 · 2012-06-26T02:58:00

can you try this code

XML

<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
  <asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ErrorMessage="Numeric Only" ControlToValidate="TextBox1" ValidationExpression="(^[1-9]\d*$)"></asp:RegularExpressionValidator>

<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ErrorMessage="Required" ControlToValidate="TextBox1"></asp:RequiredFieldValidator>

tssutha03 · Answer 8 · 2012-06-26T03:06:00

Solution 9

Use reqular expression to validate the control input during the KeyDown event

C#

btn_keyDown(object e , sender eventArgs)
{
    if(Regex.Match(txtBox1.Text, "[0-9]\d*$"))
    {
       ..............
    }
}

Posted 26-Jun-12 3:06am

tssutha03

V!jAy pAnT · Answer 9 · 2012-06-28T21:38:00

@Ranjith Reddy CSE use this javascript code with keyup event.........It will definitely help you........

C#

function phone() {
             code = "<%=txtphonenumber.ClientID %>";

             if (!document.getElementById(code).value.match(/^[0-9]+$/) && document.getElementById(code).value != "") {
                 document.getElementById(code).value = "";
                 document.getElementById(code).focus();
                 alert("Please enter phone no. in digits");
                 return false;
             }
         }

all d best...