C# .NET - accepting numerics in a textbox in asp.net with c sharp
Asked By saran vasan
10-Feb-12 04:47 AM
how to give only numerics values in a text box in asp.net and c sharp with out using javascript
Reena Jain replied to saran vasan
Hi,
Here is javascript code for you
function fn_validateNumeric(thi,e)
{
if (window.event) keycode = window.event.keyCode;
else if (e) keycode = e.which;
else return true;
if (((keycode>=65) && (keycode<=90))||((keycode>=97) && (keycode<=122)))
{
return true;
}
else
{
return false;
}
}
saran vasan replied to Reena Jain
how to give only numerics values in a text box in asp.net and c sharp without using javascript
Somesh Yadav replied to saran vasan
Hi,
here is the code for giving only numerics value in text box.
private void rtbQuantity_TextChanged(object sender, EventArgs e)
{
rtbQuantity.KeyPress += new
KeyPressEventHandler(rtbQuantity_KeyPress);
}
private void rtbQuantity_KeyPress(object sender, KeyPressEventArgs e)
{
if ((e.KeyChar < '0') || (e.KeyChar > '9')) e.Handled = true;
}
dipa ahuja replied to saran vasan
Numeric and .
<script type="text/javascript">
function chk(obj) {
obj.value = obj.value.replace(/[^0-9.]/gi, '')
}
</script>
<input type="text" value="" onkeyup="chk(this)"/>
Dilip Sharma replied to saran vasan
then u have to use asp.net validation control
but it will only check after type value in text box.......
Reena Jain replied to saran vasan
Hi,
if you want to validate the textbox for number only then you can use regular expression validation like this
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server"
ErrorMessage="only Numberallowed" ControlToValidate="TextBox1"
ValidationExpression="^[0-9]*$"></asp:RegularExpressionValidator>
Validation Checking Hi Friends, in my project i am using asp.net with c#. without using validation controls i want to check validation for textbox. urgent. 1) only strings parseInt(num.value); if (!isNaN(No)) { if ((No > = 0) && (No < = 30)) { return true ; } } else { alert( "Numerics only." ); num.value = "" ; num.focus(); return false ; } } else { return false ; } If you dont want to ME KNOW. Thanks thats working fine. but the characters that are entered is displayed (ie accepting) in the textbox, but it shoud'nt be. how to handle this. i handled the code, so that is can help you. This is the aspx page code. <%@ Page Language = "C#" AutoEventWireup = "true" CodeFile = "Default.aspx.cs" Inherits = "_Default" %> <!DOCTYPE html PUBLIC "- / / W3C / / DTD XHTML 1
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