I am having a couple of issues with the MovePrevious Button in the ASP.Net Wizard Control. I am trying to prevent it from firing the validation on the controls in each step. The attempts I have tried are:
1) Setting the CauseValidation on the button to false
2) By finding the control id for the button and coding it not to fire in the MovePrevious Event in the code behind.
Neither of theses are working, and I am clean out of ideas, and would like to know if anyone has a solution to this issue.
Lastly, and this is final question, as the wizard control keeps the history, if the user returns to the first step, is there away to clean down the history in order that the wizard starts a fresh? I used the GetHistory Method, but this seems to screw up the binding of drop down lists.
You can use ValidationGroup property
For your validators controls you set one ValidationGroup1
And for your button you set another ValidationGroup2
Link : http://msdn.microsoft.com/fr-fr/library/system.web.ui.webcontrols.basevalidator.validationgroup%28v=vs.80%29.aspx
Related
I have a custom asp.net user control which has an update panel in it. In this update panel i have all the controls and content that are shown to the user. Amongst these controls there are two textboxes, which have AutoPostback = true. This is because when their value is changed, the structure of the page changes accordingly. This works as required, but when I modify the two textboxes in quick succession, the first autopostback works while the second one doesn't fire. It seems that while it is doing the first postback, any other attempted postbacks will be ignored. How can I work around this?
This behavior is by design. The usual approach is to use UpdateProgress control that disables the user input on the page while the postback is in process.
Alternatively you could add your own onchange event handlers that call __doPostBack() more intelligently (by using timers etc.) to avoid this problem for your specific scenario. You could also try aborting any postback is process before submitting a new one.
A resource that might be useful: http://www.dotnetcurry.com/ShowArticle.aspx?ID=176
I am trying to add wizard steps dynamically to the wizard control in asp.net. Here first i have deleted default wizard steps and then i tried to add two wizard steps dynamically.then nothing is visible on the screen. If i keep the default wizard steps(step1 & step2) and i added two steps dynamically , in this case it is adding properly, but when i click on any one of the step,dynamically added steps becomes invisible.....
why, please give some guidance regarding this...........
thanks
All controls that added dynamically must be added everytime postback occured not later then Page_Load event handler.
Why do dynamic controls disappear on postback
Dynamic Web Controls, Postbacks, and View State
I seem to have a bit of a bug, I have a ASP.NET repeater control with a link buttons in it and the link button has the have the causes validation property set to false.
However; when clicking it which makes a panel visible on the web page, the asp.net required field validator controls trigger and shows their error messages. On those controls that I have the validator controls on.
Any ideas as to what might cause it to be ignoring the causes validation property set to false?
On my opinion, you should set different ValidationGroup properties values for repeater control and for control that is the source for required field validator. It is possible that container for repeat control has raised event that can be heared by required field validator.
If mentioned above cannot help then try to disable client validation for RequiredFieldValidator using EnableClientScript="False" for it. And activate RequiredFieldValidator when it really usefull. For example in the some button event handler you can apply such code:
MyButton.Validate();
if (MyButton.IsValid)
{
Do what you want...
}
For anybody that has this problem and stumbles across this post, here's what I found.
Turns out the problem was happening because I had EnableViewState="false" set on the Repeater. This was breaking the event postback somehow, and making every validator on the page fire. All I had to do was manually call DataBind() on the Repeater from within Page_Load(), and it cleared right up.
try to set the visablity of the panel true all the time in design view,, and check the validation again.
This is a little difficult to explain so please bear with me.
I have a procedure that is generating some radio buttons and assigning a CheckedChanged postback event based on the level being passed through (up to 4 levels). When the first level is checked (radio button selected) the postback event rb_CheckChanged00() is called and a check is done to see if this item has any children, if it does, it will create more radio buttons and assign rb_CheckChanged01 to the CheckChanged event for these - This part is working fine.
The issue I have is when I select the second Radio Button that has been created (the child), it doesn't seem to go to the post back event at all. The page is posting back when I click on it but everything resets because it won't go into rb_CheckChanged01.
I know this info is quite vague but I am hoping someone has an idea on how the post back event works and if I am somehow using it incorrectly.
Using: ASP.NET 2.0, IIS7
Thanks.
Most of the time when the dynamically created control's events are not fired, it's because the controls are 'reset' upon postback.
To make sure the same controls get created each and every time make sure that the control's IDs are set to the same values each and every time, before the ViewState is loaded. This way, when the control is added to the control collection of the page, once the ViewState is loaded, it'll persist it's properties. (just to describe what happens, in a nutshell)
One of the best articles I've read on this topic is this one. Make sure you read it, to fully understand what's happening in the background.
Looks like the child RBs are cleaned before they are able to trigger the event. From my personal experience, it's best to keep track of those dynamically generated objects, and regenerate them in every postback. The events will start to trigger :)
Your controls and events are not registered in the ViewState because dynamic controls need to be loaded in the Page_Init. Because they're not persisted in the ViewState, they won't be registered with events. A similar question:
Problem with dynamic controls in .NET
Only 1 thing can cause this, you create the rb's on page_load and don't add them to a List<> or something similar and that object to Session. What you need to do is when you create the items, Add them to a List and add that list to Session["RadioButtons"] and if the Page.IsPostBack is true, load your controls one by one from your list which is kept in your session to your page.
I have a simple user control containing two text boxes which I am adding to placeholder on Button Click event. I am storing the number(count) of clicks in View state and running a loop using count to create all previously added user control. I am also adding IDs to each User control (appending "UC" and count). I have also checked in view source the ids are same each time they are created. I have another button which basically does an post back. I have EnableViewState enabled ="true" in all controlls all the way up to Page Level.
My problem is that User Input does not persist on postback. please advice. Should this not be happening automatically for me?
Have a look at this:
http://www.denisbauer.com/ASPNETControls/DynamicControlsPlaceholder.aspx
I've encountered minor problems with it on a web farm, but for simple deployments its use is pretty straightforward. (Comes with source code, and the web farm glitch is a pretty simple fix.)
You need to create your dynamic controls in the Page_PreInit event rather than Page_Load or in a Click event handler. That way, they'll be there before ViewState, and then your posted values are applied.
I thinks what is happening is that you are creating your controls during the click event handler which happens AFTER ViewState and PostBack have been applied. This means your controls will be created empty each time.