I'm a rookie in .net. I'm using an AjaxToolKit Accordion Control and when I put a button in, the "onclick" event is not raising. When I use a dropDownList, if I select "autoPostBack", the event raises normaly (instead, nothing occours). But with buttons I cannot define the "autoPostBack" (its implicit?). It's bringing me several troubles.
Thank you if you can help.
I've discovered the problem (moreover two problems): I'm using AjaxControlToolKit MaskEditExtenders and MaskEditValidators, and a PopUpControlExtender. When the form isn't fulfilled correctly, the MaskEditExtenders/Validators somehow disables form submiting. Also, TargetControlID property of popupControlExtender was set to the button in question. In this case, the event isn't raised.
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I've got an ASP.NET application that I'm accessing through Google Chrome. On a particular page I've got an asp:TextBox with a OnTextChanged event that recalculates a few other fields on the page. I've also got an asp:LinkButton with an OnClick event that saves the changes to the database.
I was facing a problem where the user left the TextBox by clicking on the save button. The button was firing before the TextChanged event so the changes were not being captured in the save. I fixed this by duplicating the TextChanged logic at the beginning of the save method. Did some testing before I committed these changes and everything was working fine.
But now my tester is facing a different problem. When he changes the text field and clicks the save button, the OnTextChanged event is firing to update the other values on the page but the OnClick event for the save button is not firing at all. He has to click the save button a second time to get the OnClick event to fire. I tested the same functionality on my machine and it's still working fine for me. He and I are looking at exactly the same page in the same environment with the same database. I had my tester clear his cache etc. The only difference I can find is that my Chrome version is "14.0.835.202 m" while his is simply "14.0.835.202".
Are there any known issues with Chrome and ASP.NET where event firing can be non-deterministic or something? Anyone have any other idea why this might be happening? Thanks for your time!
I believe this is a known issue.
One option is to disable the button (client-side) when the user is typing in the TextBox, and enable it after the TextChanged event completes.
Another option is to remove AutoPostBack="true" and use AJAX instead.
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.
I have a datalist and want to dynamically add buttons to it. I am using the OnItemCommand datalist event and setting the CommandName/ CommandArgument attributes of the button.
However I am having trouble with handling the button click - does not seem to fire.
It works when I declared a button on the aspx page, but not for buttons that are dynamically created.
I hope this makes sense, and any help would be great.
Thanks
You can only create dynamic controls on PreInit or Init if you want to handle associated events. Otherwise, on postback, they won't exist at the moment of event handling and because of that, your handler method won't be called.
Internet is full of resources about how to handle dynamic controls. Let me know if you need any reference.
I need to add the OnClick event to asp:DropDownList control, due to the existing events don't satisfy my current needs.
Is it possible to achieve this?
Thank you very much.
What reason do you have for wanting an OnClick event on the DropDownList control? If you were to implement an OnClick server-side event on the DropDownList the user would never be able to select any of the list items. This is because in order to fire a Server-Side OnClick, a postback would be required. I.e. the user would click the DropDownList, a postback would instantly occur and they wouldn't be able to select a value.
It sounds like a case of trying to fix the wrong problem, however you could probably try and use the "onclick" JavaScript attribute and handle whatever you're trying to do using client side script and AJAX?
I am trying to get a crosspage postback to work in asp.net 2.0 the issue I seem to be having is the button that I press is meant to use it's on click event to store some session variables based on the values of other controls. This button has crosspage postback property to the relevant page.
The on click event seems to not run at all, it just seems to perform the postback to the other page straight away.
Is this standard behavior? Any work around?
I think I have found my answer
http://community.sgdotnet.org/blogs/chuawenching/archive/2007/03/08/ASP.NET-2.0-DataGrid_2F00_GridView-CrossPage-PostBack-.aspx
Seems like the transfer will be instant, no onClick event will run. The alternative is to use Server.Transfer in the onClick event.
Any other comments appreciated.