Hi,
I have two checkboxes on a form. The user should only be able to choose one option. I have them set to autopostback so that when one is checked the other will immediately be unchecked. Unfortunately, this causes a screen "jump" when it does the postback. Is there any way that I can avoid the jump, or at have it focus on the checkbox when it does postback?
Any help would be appreciated.
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I have suggestion for you ,
If you use radio button insted of check box it will solve your problem so quickly.
Chosse two radio buttons , in the group property of both radio buttons give same name.
then only one will be selected at one time.
If this works for you then good otherwise post message i will tell you how to do with check box.
Is there any other way to disable other controls by selecting either check box without using autopostback? For example, I want a few text boxes to be disabled if I select 'No', but I want them enabled if I selected 'Yes'. That was another reason for not using the radio buttons. It seems like I need to be able to use the autopostback, but I just hate the screen jump it causes.
Checkboxes are similar to radio buttons, and in HTML, they were used to allow multiple choices from a group of buttons. With the <asp:checkboxlist> control it is possible to create them in groups, but unlike radio buttons, it isn't possible to restrict the user to selecting just one possible answer from a group of checkboxes: they can select as many as they like. The other fundamental difference between a checkbox and a radio button is that once you have selected a checkbox you are able to deselect it by clicking on it again.
Omego2K -
Well, mainly because I really don't know anything about javascript, so I'm not sure how to use it to accomplish what I need. I'm sure it's probably a good suggestion, I just don't know how to implement it. Is there any way that I could set the focus to the check box once it posts back? At least the screen jump wouldn't cause the user to land at the top of the page. I'm sorry I'm being so difficult.
I think I figured it out. I used Me.SetFocus(cbYes4), and the following code:
Private Sub SetFocus(ByVal ctrl As System.Web.UI.Control)
Dim s As String = "<SCRIPT language='javascript'>docum
RegisterStartupScript("foc
End Sub
That seems to work. I forgot I'd used this code in a previous application to set focus to a text box. I'm sorry for wasting so much of your time, but if you wouldn't have mentioned the focus method I wouldn't have remembered. Thanks so much!!
I would strongly suggest using te ctrl.ClientID property and not the ID property.
Also if you want that mutually exclusive thing do this:
In your page load add the following(change the variable names to match yours):
check1.Attributes.Add("onc
check2.Attributes.Add("onc
Add the following to the html head tag:
<script type="text/javascript">
function checkChanged(chb1, chb2ID) {
var chb2 = document.getElementById(ch
if (chb1.checked)
chb2.checked = false;
}
</script>
That should do it.
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by: Omego2KPosted on 2009-10-22 at 07:49:03ID: 25634872
What you can do is turn off AutoPostBack and use Javascript to do the postback when you want it to. You can post the form with JS like this:
document.getElementById('m