I am tying to add the Obout Suite superform control to my webpage.
The control is not rendering on the design page.
It gives an error saying
There was an error rendering the control. Object reference not set to an instance of an object'.
I have added the #Register directive:
(<%# Register TagPrefix="obout" Namespace="Obout.SuperForm" Assembly="obout_SuperForm" %>)
to the top of my page.
Can anyone tell me what is wrong?
Related
We're using News system on a 7.6 and in this particular system we have a bug when it comes to single view.
If you click on link in list view, the detail page opens, you can see the header image, but the news article isn't loaded, instead the CE is is displaying an error message:
Oops, an error occurred! Code: 201609301037026977c150
Can anyone advise?
config.contentObjectExceptionHandler = 0
This TS-Snippets will enable error message without more Details for developers.
Is there a property that tells if a form is deactivated by other form ShowModal procedure ?
EDIT :
My program has a tray icon that brings to front the main form when it's clicked. I want to disable this when another window is shown in modal state. Because not doing so the main form (which is disable) will cover the modal form and completly block my program.
This behaviour is to be expected. When a modal form is shown, the other forms are disabled. You don't need to disable anything at all, the framework already handles it all for you. The beep is sounding because you are attempting to interact with a disabled form.
If you want to be notified when your window has been disabled, for any reason, not just because a modal form has been shown, listen to the WM_ENABLE message. To test whether or not your main form has been disabled. Do that by calling the IsWindowEnabled Win32 function.
Having said that I feel that it is likely you've not diagnosed the issue correctly. It sounds like you might be suffering from window ownership problems, which are common in Delphi 6. Or perhaps you are attempting to restore the application incorrectly from your notification icon code. Use Application.BringToFront for that.
The VCL's handling of modal dialogs seem very mixed up. When you show a system provided modal dialog, e.g. MessageBox, windows are disabled whether or not they are visible. However, the VCL only disables visible windows when ShowModal is called. What's more, you cannot use Enabled to test whether or not the window is disabled, you must use the IsWindowEnabled Win32 function.
You can test Application.ModalLevel at any point in time to find out if there's a modal form. E.g.:
if Application.ModalLevel = 0 then
MainForm.Visible := True;
Note that non-TCustomForm descendants will not set modal level, API dialogs like a file open dialog or MessageBox for instance. If there's a possibility of such a thing, you might surround code that runs those dialogs with ModalStarted and ModalFinished.
It doesn't seem necessary in your case, but if you somehow need to be notified that a form/dialog is going modal, you can attach a handler to Application.OnModalBegin and Application.OnModalEnd events. You can use an TApplicationEvents component for that.
My registration is using Spring forms and validates the data after submit, the form:errors will be printed out if there are errors. I need to scroll the page down to the first form:error so the user hasn't to search for the error, is there a way to do that?
cheers
I haven't tried any of them, but I can think of two possible ways:
With Javascript. Spans generated by < form:errors /> have a class (I don't remember at the moment) or you can force on using cssClass attribute. Would be very easy using this jQuery plugin to scroll to the first one.
Without Javascript. This will be a lot more difficult and I'm not sure it will work:
In your controller, instead of returning a direct view you must do a redirect to something like /myForm#error.
In order to don't lose your model, you must use FlashMap attributes.
"Subclass" < form:errors /> tag. It must have the same behavior but it has to include an anchor named error on the first error of the page.
I think you can do it with anchors. -- But you need to implement it by your own.
My idea it to put anchors on all input files. And then have some java script that is able to scoll to an anchor. This java script is invoked on page load if the error object contains errors. -- This errors contains the name of the field. So if you have some schama for naming the anchors it should be possible to invoke the jump to an anchor script with the name of the field hat has an error.
I am trying to get an ASP.Net MVC2 app to display a simple custom error rather than the yellow screen. I have already set up elmah to silently log the error in the background but while that happens I want to display a simple static error message based on the view in Shared/Error.aspx. Nothing fancy, just a plain vanilla "there was an error".
<customErrors mode="On" defaultRedirect="~/Error.aspx" />
I thought this was simply a matter of adding a customError tag to my config but I am still seeing the yellow page. Do I have to write a custom action handler for the Error.aspx view before I can use it? Could this be due to some interaction with elmah?
Thanks!
Duffy
Update: It seems that the problem is NInject getting in the way of handling a static error page. The yellow sceen error I am seeing is not for the original error message but the NInject Factory not finding a controller for error.aspx.
I still have no idea why failed to find my static error files. However, I finally got around the problem by defining an error controller and changing my web.config to this instead.
<customErrors mode="On" defaultRedirect="/Error/GenericError" />
I have an Ext Js panel that I am adding to my main TabPanel. The panel I am adding contains a FormPanel as one of it's items and inside the FormPanel I have a Name field. What I want to do is change the name of the Tab based on the name in the form field.
The problem is that if I call the FormPanel's getForm().getValues() inside of the panel's initComponent, I get the following javascript error:
Uncaught TypeError: Cannot read property 'dom' of undefined
If I do this outside of initComponent (e.g. on a button press) everything works fine. After doing some testing, I think the issue is that the FormPanel isn't actually rendered yet (and thus the dom doesn't exist), getValues() fails. However, I can't seem to figure out a way to get my FormPanel's values from the Panel on load.
I tried to listen for events. I tried:
this.detailForm.on('afterrender', function () { alert('test'); });
but doing this showed that AfterRender is called prior to the form actually being rendered (it's not visible on the screen). Changing the alert to my custom function handler produces the previous dom exception. I attempted to use the activate and enable events instead of afterrender, but even though the API says that FormPanel fires those events, the alert('test') never gets called.
I can't seem to find any way for my panel to get the inner FormPanel's values upon loading my panel. Does anyone have any ideas?
Using getFieldValues() in place of getValues() will collect values by calling each field instance's getValue() method instead of by reading from the DOM. This should allow you to get your values regardless of the form's rendered state.
I've got the same problems on one of my projects, I managed to fix it using the afterlayout event.
I'd give setting .deferredRender:false a try.
Ext.TabPanel.deferredRender
Probably best to roll out of your afterlayout changes, then test with just a straight deferredRender:false config item.
I believe the problem is caused because the inactive tabs are not rendered until they become active. In your scenario, you cannot get the values, because they don't exist until the tab is activated/shown.
Setting deferredRender:false will render the items within all tabs. There could be a performance hit by setting deferredRender:false, so testing you must do.
Hope this helps.