Text Box Validation

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Hi

Please Give Me A Suitable Example Of TextBox Validation . If my Textbox Is Null Then Msg Show The Specific Text box Is Null Its Be Required Filed Using Java Script Code..

Thanks

Posted 29-Sep-10 21:08pm

jindi123

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Comments

Baji Jabbar 30-Sep-10 3:34am

Why you are going for JavaScript when we have required field validater, that would be safe , Users can disable JavaScript in their browser and we cannot bi-pass that.

Johnny J. 30-Sep-10 3:39am

Cool, all words are capitalized - that's better than writing entirely in lower case, anyway...

5 solutions

Solution 3

Ok, its not working means what.. any error you getting..

function ValidateNow()
 {
   if (document.getElementById('<%=txtbox1.ClientID%>').value == "")
   {
        alert("TextBox is Blank!");
        document.getElementById('<%=txtbox1.ClientID%>').focus();
        return false;
   }
    return true;
}

On Page Load

 Button1.Attributes.Add("onclick", "javascript:if(ValidateNow()==false) {return}; ")

Posted 29-Sep-10 21:45pm

Suthish Nair

Updated 29-Sep-10 22:52pm

v2

Comments

Hiren solanki 30-Sep-10 4:52am

Minor edit for 'pre' tags.

Solution 1

Probaly write this JS.

var a = document.getElementById('your textbox id').value;
if(a != null && a != "")
{

}

Please vote and Accept Answer if it Helped.

Posted 29-Sep-10 21:16pm

Hiren solanki

Solution 2

It's not working. The Required Field Validator is very heavy

Posted 29-Sep-10 21:36pm

jindi123

Updated 29-Sep-10 21:39pm

v3

Comments

Suthish Nair 30-Sep-10 3:40am

Now from where Required Filed Validator come from?

You asking for showing message box or want to do with validator controls.

Both are different. Please explain your query properly..

Solution 5

hiii

Im My case I use a TextBox (Text1),On the onclick event it checks the Text1
is null or not with the help of js

XML

<html>
<head>
<script type="text/javascript">
function show()
{
var a=document.getElementById("Text1").value;
if(a=="")
{
 alert('Please enter some values in it');
}
}
</script>

</head>
<body>
<input type="text" id="Text1" onclick="show()"  />
</body>

</html>

Posted 12-Oct-10 20:32pm

mahakgupta

Updated 12-Oct-10 20:37pm

v3

Comments

jindi123 13-Oct-10 3:41am

it's not working
u have another code

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shakil0304003 · Accepted Answer · 2010-09-29T23:11:00

Example:

<script language="JavaScript" type="text/javascript">

function EmptyChecker(sender, args) {
var value = args.Value;
if(value=="")
{
args.IsValid = false;
alert("Blank");
}
else
args.IsValid = true;
}

</script>

<asp:textbox id="txtDateOfBirth1" runat="server" xmlns:asp="#unknown" />

<asp:customvalidator id="cbDateTime" runat="server" display="None" errormessage="" xmlns:asp="#unknown">
ForeColor="Red" ValidationGroup="group1" ControlToValidate="txtDateOfBirth1"
ClientValidationFunction="EmptyChecker">

<asp:linkbutton id="lbNext1" runat="server" cssclass="btn_next" onclick="lbNext1_Click" xmlns:asp="#unknown">
ValidationGroup="group1">

Text Box Validation

5 solutions

Solution 4

Solution 3

Solution 1

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