Ho do I modify my textbox to accept both text and numeric values?

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I have a web forms application with varying types of controls. I have a textbox that as of right now only accepts numeric values. As soon as I type a letter, the letter will appear and then backspace. I don't have this issue when entering numeric values.

Here is the html that creates the textbox:

XML

<div class="FloatLeft">
                <span class="DataPromptLeft">Alpha Number</span><span class="RequiredIndicator"></span><br />
                <asp:TextBox ID="uxLineNumTxt" runat="server" CssClass="TextControlMedium" MaxLength="14" onkeyup="NumericKeyUp(this);" Width="152px"></asp:TextBox>
            </div>

I believe the onkeyup="numericKeyUp(this); is what is making my textbox behave as previously described. I researched this issue as well as the onkeyup purpose/ functionality. Everything I came across was oriented towards getting a textbox to only accept numeric values, which is the opposite of what I want.

Any ideas on how to approach this?

Posted 17-Aug-15 3:56am

Member 11907253

Updated 17-Aug-15 3:57am

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Sergey Alexandrovich Kryukov 17-Aug-15 10:08am

By default, TextBox accept any characters. So, what's the problem? If you have a code sample with a text box filtering input to accept only numbers, you know how to do filtering. Do exactly what you want.
—SA

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Richard Deeming · Answer 1 · 2015-08-17T04:27:00

Solution 1

If you don't want to filter the characters entered into the textbox, then remove the onkeyup attribute. The javascript function name "NumericKeyUp" suggests that this is what's causing the behaviour you're seeing.

Posted 17-Aug-15 4:27am

Richard Deeming