disabling a button server-side then re-enabling client-side breaks button postback
Posted on
16th Feb 2014 07:03 pm by
admin
I have a tabbed container and a button (not in the container) on a page. If the first tab is selected, I want the button enabled. If the second is selected, I want the button disabled. I have created this functionaliity, but I have encountered some odd behavior.
Switching tabs is handled client-side, and therefore, when the tabs are switched, I use something like the following to enable/disable the button client-side based on which tab is selected:view plaincopy to clipboardprint?var saveButton = document.getElementById("<%= btnSave.ClientID %>") if (saveButton) { saveButton.disabled=false; if mytab=="Tab2") { saveButton.disabled=true; } } var saveButton = document.getElementById("<%= btnSave.ClientID %>")
if (saveButton) {
saveButton.disabled=false;
if mytab=="Tab2") {
saveButton.disabled=true;
}
}view plaincopy to clipboardprint? view plaincopy to clipboardprint?This works great but the first problem I run into is, if a control on the second tab (the button is disalbed when this tab is selected) causes a postback, then after the postback the button's state is returned to enabled. This sort of makes sense since the page lifecycle, at this point, knows nothing about what the button state should be. I decided the solution to this would be to check what the current tab is during page load, and if it is the second tab, set the button enabled property to false. In this way, when a postback occurs on the second tab, the button remains disabled. Well, this works to a charm, but I encountered a bizzare side-effect. This works great but the first problem I run into is, if a control on the second tab (the button is disalbed when this tab is selected) causes a postback, then after the postback the button's state is returned to enabled. This sort of makes sense since the page lifecycle, at this point, knows nothing about what the button state should be. I decided the solution to this would be to check what the current tab is during page load, and if it is the second tab, set the button enabled property to false. In this way, when a postback occurs on the second tab, the button remains disabled. Well, this works to a charm, but I encountered a bizzare side-effect.view plaincopy to clipboardprint? view plaincopy to clipboardprint?On the second tab, a postback is caused. The button remains disabled as it should be. I then swith tabs. The client-side code goes into effect and the button client-side disabled property is set to false. However the strange thing is, now the button doesn't work. Clicking on it does not cause a postback and doesn't really do anything. It seems that setting the button enabled property to false and then true server-side, somehow doesn't jive with setting it's disabled property to false on the client. On the second tab, a postback is caused. The button remains disabled as it should be. I then swith tabs. The client-side code goes into effect and the button client-side disabled property is set to false. However the strange thing is, now the button doesn't work. Clicking on it does not cause a postback and doesn't really do anything. It seems that setting the button enabled property to false and then true server-side, somehow doesn't jive with setting it's disabled property to false on the client.view plaincopy to clipboardprint? view plaincopy to clipboardprint?anyone have an idea what is going on?
Your Answer:
Login to answer
96 
11 
Other forums
Check premium expire
Hi,
I am making a simple file hosting site and want to check if users premium subscriptions h
php not working written for consumption of slots
1. Here is the function where i will be allowed to consume the slot booked by me.
2. Here i c
Calander layout
Hi i know this sounds like a simple question but i cant find the answer to it anywhere i have added
2 decima places & How to reload my page
Hello There,
How do i put full-stop (.) after second figure from behind? ie if i have 123456
SQL query not working well
Hi,
I made a small table with 5 rows and want to make them an sql consult using rownum
Pagination
Okay here is the page in question: http://blenderteachings.000a.biz/tutorials.hamishhill.php
How can use this array as a key?
Say I have this array for example:
print_r($array);
Prints:
Code: [Select]Array
Confusing Functions
So, I've been reading up on Functions and I like them! However, I need some help using variables in
Passing Variables
What I'm wanting to do is when the user clicks on Arenas it will know the name of the country it's w
[RESOLVED] Socket/Port remains open after app crashes
I'm having this problem with a networked app in vb.net.
If the program exits normally the por
