How to validate a textbox in ASP.net?

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I need help on validating a text box using java script at client side. Plz help me..

Posted 2-Sep-12 17:43pm

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virang_21 3-Sep-12 0:17am

call your javascript function on button submit or onblur event of textbox

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Prasad_Kulkarni · Answer 1 · 2012-09-02T18:13:00

Try search on google[^].

A simple search here can solve your problem in quick time for sure.

This search shows 4,490,000 results, and many of those search result threads will surely solve your problem.

Try this thread: Validate TextBox[^]

and don't ask question like validating text box.
Be specific!
Specify exactly what it is you need help with.

Refer: How to ask a good question?[^]

Arun Kumar K S · Answer 2 · 2012-09-02T18:45:00

Solution 2

Try this link if you are developing an ASP.net website
http://forums.asp.net/t/1356162.aspx/1[^]

Posted 2-Sep-12 18:45pm

Arun Kumar K S

Devendra 1988 · Answer 3 · 2012-09-02T19:00:00

XML

<form id="form1" runat="server">
    Your name:<br />
    <asp:TextBox runat="server" id="txtName" />
    <asp:RequiredFieldValidator runat="server" id="reqName" controltovalidate="txtName" errormessage="Please enter your name!" />
    <br /><br />
    <asp:Button runat="server" id="btnSubmitForm" text="Ok" />
</form>

use required field validator and regualar expression validatior

http://asp.net-tutorials.com/validation/required-field-validator/[^]

http://asp.net-tutorials.com/validation/regular-expression-validator/[^]

VIPR@T · Answer 4 · 2012-09-02T19:15:00

Solution 4

hi,

See the below links. May it helps you to solve the problem.

http://kottawadumi.blogspot.in/2010/05/how-to-validate-textbox-using.html[^]
http://www.webmastervideoschool.com/javascript/javascript-tutorial-validate-form-textboxes-select-check-box-components-and-email-validation/[^]

Posted 2-Sep-12 19:15pm

VIPR@T

Mits Machhi · Answer 5 · 2012-09-02T19:53:00

Try This :

<script type="text/javascript">
function validate()
{
    if(document.getElementById("<%=txt1.ClientID %>").value=="")
    {
        alert("Please Enter Textbox Value");
        document.getElementById("<%=txt1.ClientID %>").focus();
        return false;
    }
}
</script>

And call on Button OnClientClick Event :

<asp:button id="btn1" runat="server" text="Click Here For Validation" onclientclick="return validate()" xmlns:asp="#unknown" />

if any problem you got, please post it....

How to validate a textbox in ASP.net?

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How to validate a textbox in ASP.net?

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