>>Hi all,
>>
>>I have what I thought would be a simple task. I have a user control on an asp.net page showing an agreement form. All I want to do is enable a continue button after a checkbox is checked to indicate agreement. I wanted to avoid a postback so am trying to set the button to enabled when the checkbox is checked but I cannot get this to work. I have tried several approaches found on web including the below. (I changed the angle brackets to parens so they would show)
>>
>>Anybody with javascript knowledge have an answer that might help me? Thanks a bunch
>>Tim
>>
>>
>>This is just one approach I tried.
>>
>> (mm:mmCheckBox ID="chkAgree" runat="server" Checked="false" Text="I Agree to the Terms" /)
>>
>> (mm:mmButton ID="btnAgreeContinue" runat="server" Text="Continue"
>> Enabled="False" /)
>>
>>function SetAgreeAndContinue(checkbox, buttonid) {
>> var button = document.getElementById(buttonid);
>>
>> if (checkbox.checked)
>> button.enabled = true;
>> else
>> button.enabled = false;
>> }
>>
>>In the code behind
>>protected override void OnInit(EventArgs e)
>>{
>> chkAgree.Attributes.Add("onClick", string.Format("javascript:SetAgreeAndContinue(this,'{0}');", btnAgreeContinue.ClientID));
>> base.OnInit(e);
>>}
>>>
>Haven't tried your code but something based on this should work (assuming the mm controls are derived from the asp ones):
<head runat="server">
> <title></title>
></head>
> <script language="javascript" type="text/javascript">
> function SetAgreeAndContinue(checkbox) {
> var button = document.getElementById("btnAgreeContinue");
> button.disabled = !checkbox.checked;
> }
> </script>
>
><body>
> <form id="form1" runat="server">
> <div>
> <asp:CheckBox ID="chkAgree" runat="server" onclick="SetAgreeAndContinue(this)" />
> <asp:Button ID="btnAgreeContinue" runat="server" Text="OK" disabled="true" />
> </div>
> </form>
></body>Thanks Viv,
How would this be different since I am using a web user control. I cannot put the script in the head section (there isn't one). I suppose I could add a content place holder in the head of the master page, but not sure I could add to that within the web user control. Maybe I need to inject it via code.
Tim
Timothy Bryan
