validation for a textbox in c# asp.net 2.0

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in c# asp.net 2.0 when i did not enter text in textbox and if i move to next textbox it should display error message..how to do that..can anyone help me..

Posted 26-Feb-13 19:03pm

nityasri

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Abhimanyu Rawat · Answer 1 · 2013-02-26T19:11:00

Solution 1

Hello,
You just write code on text box TextChanged event.

Thanks
Abhimanyu Rawat

Posted 26-Feb-13 19:11pm

Abhimanyu Rawat

Bojjaiah · Answer 2 · 2013-02-26T19:16:00

Solution 2

Hi,

you can use RequiredFieldvalidator controls

Posted 26-Feb-13 19:16pm

Bojjaiah

v2

Uday P.Singh · Answer 3 · 2013-02-26T19:18:00

Solution 3

Try This[^]

hope it helps :)

Posted 26-Feb-13 19:18pm

Uday P.Singh

zapbuild · Answer 4 · 2013-02-27T01:23:00

With this example the required field validator is applied on name textbox kindly go through with the answer and then apply it on your project:

<html>
<body>

<form runat="server">
Name: <asp:TextBox id="name" runat="server" />

Age: <asp:TextBox id="age" runat="server" />

<asp:Button runat="server" Text="Submit" />

<asp:RequiredFieldValidator
ControlToValidate="name" Text="The name field is required!" runat="server" />
</form>

</body>
</html>

samadhan_kshirsagar · Answer 5 · 2013-02-27T01:40:00

Solution 5

IN Asp.net

there is a validation control

Required field validator.

so use that

Posted 27-Feb-13 1:40am

samadhan_kshirsagar