I have a webforms page with 2 UpdatePanels: udpGrid for a gridview and udpFormViews with a ajaxToolkit:TabContainer surrounding 3 tabs for Insert and Editing records from the grid, and a repeater with it's own item template for editing related data to the main record. The edit tab is invisible on Page_Load. Inside the insert and edit tab resides the same Usercontrol which contains a Formview. the formview is set to insert mode by default but has an insert and edit item template with a footer template for save/update/cancel buttons, and when editing The second instance of the usercontrol gets set to edit mode and loaded and shown. It also contains a footer template containing the insert udpate and cancel commandbuttons to trigger the FormView's native inserting/updating/cancel events. RequiredField valdators on the insert FormView UserControl works fine from start and after inserting, but as soon as i do a postback to show the edit FormView usercontrol or the Repeater on hte 3rd tab (which has no relation to the Usercontrol containing the UserControl) the RequiredFieldValidators on the insert formview stop working at all, and even in code validating it's insert-validationgroup returns valid while the requiredField shows empty text in code.
For some reason the insert FormView UserControl loses it's validation logic completely after any postback but it's own Insert, with or without the second instance of the UserControl present. I don't load or change anything to the insert Formview UserControl and i can keep inserting without breaking the Validation but whenever a postback occurs outside of it it breaks. Even updates on the other UpdatePanel (udpGrid) break it and i have no way to test validation on the insert UserControl clientside or serverside using the RequiredFieldValidators. The Edit UserControl does still fire its validators but besides showing the error text on screen it ignores it and still updates the record, also ignoring server side the edit-validationgroup validation.
Does anyone know what is happening? it seems putting these Formvies in UserControls kind of breaks things while using it plain on other pages causes no issues?
Update: i found out that when the RequiredFieldValidation is broken i can still trigger the errortext by filling and emptying the textbox on the clientside. the problem that the page validation on client side and on server side doesnt work correctly persists
Found out the problem after some extensive digging. I was using ASP:Linkbuttons inside the footer template which didn't do the validation anymore after the UpdatePanel surrouning everything did an update. Even though i used ChildrenAsTriggers="False" on my UpdatePanels it somehow messed up the clientside validation triggers.
I went and moved the buttons into the templates themselves and changed them into ASP:Buttons. I believe i needed the buttons to be Linkbuttons since the normal Buttons wouldn't trigger postbacks with the FormView_ItemUpdating and FormView_ItemInserting events of the Formview in the Footer template, but now that i have dedicated buttons inside the Insert and Edit templates they can be normal Buttons again.
Hope this helps someone out there facing a simular problems.
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I have a custom control that has an update panel in it. Within the update panel, there are no custom controls, but there are custom controls outside the update panel. All controls have an ID set as do the parents of the controls. Inside the update panel is a repeater that has controls that should trigger an async postback. The update panel has an update mode of conditional and children as triggers is off. The update panel renders standalone divs, not table cells. EnablePartialRendering is on on the script manager.
Each repeater item has numerous textboxes, but two of them have autopostback turned on. Inside the repeater ItemDataBound event, I register the control with the script manager's RegisterAsyncPostBackControl.
If I edit either textbox, it does a callback correctly. But after the first one is edited, if you edit the other one, it does a full postback. It doesn't matter which one is done first. But after it's done its postback, if you edit either of the textboxes, it does callbacks correctly.
I've tried several things like changing the UpdateMode and ChildrenAsTriggers properties to various combinations. Nothing seems to work.
Any suggestions?
A lot of things can cause this, compare UpdatePanel causes full page postback with LinkButton in ListView in UpdatePanel causes full postback.
You'll need to provide more information, e.g. .NET Framework version, IIS version etc. exact ASP.NET markup etc
But since you asked for "Any suggestions?" try looking through these questions
I have 2 identical AutoCompleteExtender's - one is in the Insert mode of my DetailsView, which is the default mode, and one is in the Edit mode. There is also another DetailsView, which only shows when a Checkbox is ticked (and the page posts back), which also hides the previous one.
When the mode is Insert, there are no issues at all, even when ticking the checkbox to hide the DetailsView with the AutoCompleteExtender in and show the other one (which has no AJAX controls btw). But when the mode changes to Edit, and the user ticks the checkbox to change to the other details view (with no ajax), I get this error:
Extender control 'autoNom' is not a
registered extender control. Extender
controls must be registered using
RegisterExtenderControl() before
calling RegisterScriptDescriptors().
Parameter name: extenderControl
Any ideas guys?
Thanks
The problem is not with the other DetailsView. Try deleting the extender for the edit mode and and configure it again. Because it looks like there is something with the Ajax config in the edit more. Make sure about the namings.
I am trying to generate a gridview dynamically through codebehind. So I am making all the columns through code using BoundField and other controls.
Now I am trying to to put a edit button in the gridview sand program that(I made a RowEditing handler). Right now all my code is in the page_load but when I hit the edit button in the gridview I get 2 gridviews back on post back.
So I tried to put a isPostback if statement to stop this but then I just get a error back saying it can't find the handler.
So I am not sure what to do.
Thanks
Depends how you created the control, what version of Visual Studio, and how nested it is.
For example I currently just went backwards a bit in technology.
I'm using 17 gridviews on a page that are all sql server 2000 driven from code behind and i have a dropdown in the grid for even row as well.
vs 2005 2.0 is what i am using.
I'm using a Master Page (which typically will not be a problem from gridviews, but will need ResolveUrl for jquery references)
Getting to your question, I seem to have that problem with .net asking for a handler when i would tend to copy and paste from .aspx html source. I have MultiView/View/FormView etc... so I tried CTYPE etc..., but upon re-doing the edit with being on the aspx page design view, then use properties and the events. Or if it is a link or button on the page then click on it in design view and it should take you there and NOT have a problem with the Handles.
Some of my code for Edit Button
etc.....
THEN in your properties -> Events, look for "RowEditing" and write in a name then put breakpoints in where it is called and you are there really for edit mode...
I only use 2 other events "RowCancelingEdit" and then "RowUpdating"
Thus I click Edit (which everything is readonly), and a postback occurs (eventually i was to be doing grids again with ajax and not have postbacks) then my fields are in edit mode and dropdown shows list from database as well .... I can update or cancel.... either way it ends in back to readonly state with Edit button visible.
Please post some code if you are still having issues with it.
Here is what I am trying to do. I have a page with two link buttons and an updatepanel (the two linkbuttons trigger the updatepanel). I have two usercontrols which have labels with same ID's. When I click the first link button, I add the first usercontrol to the updatepanel and set the label value to datetime.now
when i click the second link button i add the second usercontrol but i see that the value of the label from the first control is set in the label in second user control. if the id's are different there is no problem - but in my case the usercontrols are being developed by different teams and I am integrating them in the way i mentioned - so they may have same ids.
i have browsed all over and tried various suggestions but i cannot get this to work, any help will be greatly appreciated.
Thanks
Job Samuel
Your problem has nothing to do with the UpdatePanel, actually.
Imagine what would happen if you had a 3rd LinkButton, which did nothing but postback. What would happen if you clicked the 1st LinkButton, the UserControl appeared, and then you clicked the 3rd one? What do you expect to see? If you think you will see the UserControl again, you are wrong. Dynamically created controls must be created every request, they don't stick around automatically. ViewState remembers the state of controls on the page, NOT what the controls themselves are in the first place -- thats what the markup in the aspx page does. Dynamically created controls obviously arent in the markup, so they arent automatically recreated.
You need to think of the lifecycle of a control as 'straddling' half way between two requests. It starts half way into one request and ends half way into the next. You need to save which user control is currently displayed in either a hidden field or a Page.ViewState value (not the user control itself mind you, just whatever information you need to figure it out), then reload that control from the page's OnLoad. If you do that -- the sequence will go like this:
(1) Click LinkButton1
(2) UserControl1 dynamically created
(3) Click LinkButton2
(4) Page.OnLoad reloads UserControl1
(5) UserControl1 loads its postback data and viewstate
(6) LinkButton2's click event fires
(7) Remove existing UserControl1 and add UserControl2 dynamically
(8) UserControl2 can have the same ID, since UserControl1 already 'consumed' its state.
I suggest you browse my series of articles on Understanding Dynamic Controls in ASP.NET:
http://weblogs.asp.net/infinitiesloop/
You have to set a different id for the label when you create the user control.
I have a UserControl which contains voting buttons inside an UpdatePanel, and outside a Repeater, it works perfectly. In the repeater, clicking the button fires off the appropriate event. That event is supposed to update the text of a control within the User Control, and that update should be reflected when the UpdatePanel refreshes.
If tried the UpdatePanel in UpdateMode Always and Conditional (firing the Update event after making the changes to the properties in the _Click method, and the same problem happens both ways.
Is there something about how UpdatePanels behave in Repeaters that I'm missing?
Thanks.
The reason might have nothing to do with the update panel, but with the postback loosing track of your UserControl. Possibly assigning unique IDs to your user controls may help.
Your repeater is building a table correct? The problem is most likely that an update panel generates a div tag and it's probably outside any TR and TD tags so the browser doesn't know what to do with it.
http://www.netortech.com/blog/?articleid=8