I have used AJAXToolkit AutoComplete extender in my project.It works fines.But the issue is with the form of the page.
when i type in the AutoComplete, i get list of suggestions.When i click on the page other than the Autocomplete, the form gets submitted.
any suggestions how to stop submission of entire form whenever i click on the page?I use .net 2.0
Does your TextBox have AutoPostBack="True" set? If so, it will automatically postback when you're "finished" (when the input control loses focus). If this is the case, just set it to false.
yeah,My TextBox AutoPostBack was set to true which i have changed it to false, now.
but i have a url attached to each of my suggestions.On click of suggestion, user gets navigated to that particular url. When i do AutoPostback= "false", i wont get navigated to that page.
HOw do i handle it?
I think it would be as simple as adding a required validator to your element to see if the user selected anything.
Eric
Use jquery to add an event handler that detects clicks. When a click occurs, stop the browser. Let me know if you need code.
Related
I have some input fields, regular expression validators, and custom validators inside an ASP.NET ASCX control. The behavior is a bit odd in that it works the following way:
If a client side validator flags an error message and I tab away from the input field and click submit then the page posts as it should. However, if a client side validator has flagged an error and instead I correct the error and click submit button then the error is cleared but the page is not submitted until I click the submit button a second time.
My question is how do I change this behavior such that I only need to click the submit button once to both clear the error and postback the page? Also, is this "behavior" standard?
Update: This behavior occurs without using the user control. I believe it is specific behavior to the CompareValidator. Nope, same behavior occurs with custom validator. If I don't "tab away" and click the button then I must click it twice to get the postback to occur. The first click just clears the validators.
The issue is that the CustomValidator has display type as Dynamic and not Static. This post helped me to discover the answer
RequiredFieldValidator have to click twice
I will give credit for anyone who explains why it causes this behavior.
I have the following scenario:
UserControlA contains a <asp:Button id="bSomeid" onClick="AddItem" /> with some code to an item to a shopping basket in AddItem.
UserControlB contains some LinkButton's that dynamically add a selection of UserControlA to the page in the OnClick event.
This is all done in an UpdatePanel. It is a little more complicated but I have pruned the information to what I believe is causing the problem, I will add more information if necessary.
The problem I have is that it takes 2 clicks for the AddItem event to trigger after I have added the items to the page after clicking the LinkButton.
I understand why this is happening - it is to late in the page cycle to register events for the next post back in the onclick - but can anyone think of a way around this? Can I force an event to be triggered on the next postback? I have tried to think of a way to run my code in page_load but I requuire access to the sender in the onClick.
Using .NET 4.0.
EDIT
I managed to find a way to get the link button sending the request in the Page_Load (using Request.Form["__EVENTTARGET"];) so I moved my code to the Page_load event. It still requires 2 clicks so I am assuming it isn't something to do with the onClick being registered to late.
Are there any other general things to check that could cause a button to require 2 clicks to post an event properly?
If your suspicion about being late in page life cycle is true then you can try using ScriptManager.RegisterAsyncPostBackControl method to register dynamically added controls in the link button click - considering that your button is within user control, you need to add public method into UserControlA that would actually register the button bSomeid1 and link button click from UserControlB would actually call the A control's method.
EDIT :
Another cause for button click not happening can be that button being dynamic control is not added in the page hierarchy when post-back happens (or it gets added very late in the page life cycle when the post back data is already processed). A really full-proof solution should add dynamic controls back to the page hierarchy in page_load it-self (and strictly maintaining same controls ids within hierarchy). If that's not possible then you can sniff the request (Request.Form) to detect the post-back.
In your case, you should ascertain if the button is indeed causing the post-back on each click. If yes, what is the POST data (Request.Form) for the first request - what is the __EVENTTARGET value on the first click (and post-back)? That should start your trouble-shooting.
On the other hand, a simple work-around could be to use html anchor element (you can still use link button) and have a javascript handler in the click event that would set some hidden variable and then submit the form (you can simulate the click on hidden button to trigger ASP.NET client side submit pipeline) . Now the hidden variable value can be used on the post-back to determine which link button has been clicked.
"Are there any other general things to check that could cause a button to require 2 clicks to post an event properly?"
Does it require two clicks on the control, or does it take accept a single click elsewhere on the screen, and then fire first time with a single click on the control?
I have my own (similar) issue with the Updatepanel where the first (expected) trigger does not fire and it seems that a single click elsewhere, and then the subsequent triggers fires first time (which totals 2 clicks)
[edit] Since you are working on this ATM, it may help me as well. Do you have a textbox with a trigger event on it? I do, and if I leave this blank (so that it does not fire) then there is no need for a second click.
Good day,
I have a problem in a .NET page where I am using an asp:textbox in combination with an OnClick action on a link button.
What happens is that after text has been entered into the textbox, if you directly click on the link button, more often than not the textbox is considered to be null.
If you click off the text box first then click the link, all is well and the save function performed by the link button proceeds as expected.
My assumption is that there is a lifecycle event that is being missed, or not applied which is not binding the text to the textbox for use in the codebehind when the link button is clicked.
The question is, what can i do to enforce that binding short of doing something like adding an onkeypress event to the textbox to force a postback.
There must be a more elegant solution.
Thank you in advance for your help.
Do you have initializations on your textbox inside Page_Load event? If so, use IsPostBack=false and put the initialization inside.
If IsPostBack =False Then
TextBox1.text=""
End If
I have a RegularExpressionValidator for a TextBox in a control, which itself is part of another control. When I click the button to submit the form, it seems that it should not do so unless all child controls are properly validated. However, what ends up happening is that I see the validation error message pop up for each control that failed to validate before the page posts back anyway and fails when it can't parse the malformed input.
I have tried surrounding the failing code with if (Page.IsValid) {...} to make sure it doesn't run without complete validation, but the property ends up being true by the time I hit the breakpoint.
Shouldn't an entire page be invalid if any child controls are not successfully validated?
Do you have different ValidationGroup controls defined? As long as the validators in the same validation group as the button are all setup correctly, yes it should block. Unless, for some reason, the JS is failing to load for the validators.
HTH.
Set "CausesValidation = true " to your submit button, I guess your problem will be solved.
Have you called Page.Validate() before using Page.IsValid ?
I have a page with a user control which gets some data updated via a modal popup. Upon clicking "ok" on the modal popup - the new data is being written to the database - but the base page doesnt "reload" to show the updated data. How do I get that to happen?
1) Don't set the OKControlID property on the ModalPopupExtender.
2) In your Page_Load, set OkButton.OnClientClick = string.Format("$find('{0}').hide();", modalPopupExtender1.ClientID);
Explanation:
Setting the OkControlID stops the button from posting back. Instead, manually use javascript to hide the extender, which will allow the button to post the form.
You'll either have to update that control using ajax, or you could just do a Response.Redirect(assuming your modal is .net, or document.location if js) back to your page after your data has been updated.
Make sure the "Ok" button in your modal popup is causing a postback. If you want it to be ajax-enabled, make sure to put it inside of an update panel.