Need to validate Textbox in Web Application using regular expression

Question

User-2010964872 posted

I have a textbox for adding a phone number or editing the phone number. I need to validate the text box such that it accepts only numbers on key pressed

I could find solutions for windows form applications

Answer 1

User-344705538 posted

Try this.....

onkeydown="if (window.event.keyCode < 47 && window.event.keyCode > 58){ return false; }"

Answer 2

User1027872733 posted

yash

run following

<form>

 <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
    <asp:RegularExpressionValidator ID="RegularExpressionValidator2" runat="server"
        ControlToValidate="TextBox1" ErrorMessage="*"
        ValidationExpression="((\(\d{3}\) ?)|(\d{3}-))?\d{3}-\d{4}"></asp:RegularExpressionValidator>
   
    </form>