How to make textbox accepts numbers?

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I have a text box which should should only allow numbers between 0 to 9 and single decimal point(.) and only positive numbers.

Posted 8-Oct-13 18:54pm

User-10250592

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Siva Hyderabad · Answer 1 · 2013-10-08T19:04:00

XML

<SCRIPT language=Javascript>
       <!--
       function NumberDOT(evt)
       {
          var charCode = (evt.which) ? evt.which : event.keyCode;
          if (charCode != 46 && charCode > 31
            && (charCode < 48 || charCode > 57))
             return false;

          return true;
       }
       function isNumberKey(evt)
      {
         var charCode = (evt.which) ? evt.which : event.keyCode
         if (charCode > 31 && (charCode < 48 || charCode > 57))
            return false;

         return true;
      }

♥…ЯҠ…♥ · Answer 2 · 2013-10-08T19:00:00

Solution 1

Hi,

I hope this link[^] and this one[^] would help you a bit

Regards,
RK

Posted 8-Oct-13 19:00pm

♥…ЯҠ…♥

jaideepsinh · Answer 3 · 2013-10-08T19:05:00

You can do it on text box key press event or you can use ajax control (filter text).
Below i saw you how to do that on key press event :

C#

private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{
    if (!char.IsControl(e.KeyChar)
        && !char.IsDigit(e.KeyChar)
        && e.KeyChar != '.')
    {
        e.Handled = true;
    }

    // only allow one decimal point
    if (e.KeyChar == '.'
        && (sender as TextBox).Text.IndexOf('.') > -1)
    {
        e.Handled = true;
    }
}

For more detail refer this link :
http://stackoverflow.com/questions/463299/how-do-i-make-a-textbox-that-only-accepts-numbers[^]

Accept as answer or vote if help.

Thanks7872 · Answer 4 · 2013-10-08T19:44:00

Use AJAX FilteredTextBoxExtender Control[^] like this:

C#

<asp:textbox id="txt" runat="server" ></asp:textbox>                   
 
<asp:filteredtextboxextender id="FilteredTextBoxExtender1" runat="server" filtertype="Numbers, Custom" validchars="." targetcontrolid="txt" ></asp:filteredtextboxextender>

Regards...

How to make textbox accepts numbers?

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