asp.net registration form development

[bwan050]

I am new to asp.net.
Currently I am developing a registration form.
it contains user name, email, password textboxes.
and several drop down lists, such as date, month and country.

Once user fill out the form and click on the submit button.
The program firstly check whether the email or user name exists in the database.

If exists, then
from is not submitted
re-enter user name.

the problem is that the selected values in drop down lists all go back to initial values. i.e go back to the first option. after submitted.

Can anybody please tell me how to make the drop down lists values remains the same if page is submitted but was not successful.

Thanks in advance.

[kenobewan]

This is a postback issue try using not page.ispostback . If you are using 2.0 try using membership. HTH.

[Shawpnendu Bikash Maloroy]

This is a postback issue try using not page.ispostback . If you are using 2.0 try using membership. HTH.

I think you populated combobox in page load event. When you click on a button the page execute your page load event again then execute click event.

So you block the page load event code by

if (!IsPostBack)
{

//your page load code goes here
}

Hope it will solve your problem.

[bwan050]

I think you populated combobox in page load event. When you click on a button the page execute your page load event again then execute click event.

So you block the page load event code by

if (!IsPostBack)
{

//your page load code goes here
}

Hope it will solve your problem.

Thanks for your post.
The combo box is not populated in the page load event.
I used class asp way to fill out the combo box..
<option><% some thing %></option>