I am learning ASP .NET and came across modal popup extender. I found that animations are possible with modal popup but I have a question as to what is the difference between OnShowing and OnShown tags. A google search gave me
OnShowing – Called before the modal popup is shown.
OnShown – Called after the modal popup is shown.
OnHiding – Called before the modal popup is hidden.
OnHidden – Called after the modal popup is hidden.
But, I am confused about something. When I click on the target button and use OnShowing, there is no animation effect. But when I use OnShown, the animation is successful. Now, isn't the OnShowing called BEFORE the modal popup is shown, so when I Click on the target button, it is the function OnShowing which is supposed to be called. I think I am missing something here. Thanks for the help!
Have you checked this [AnimationExtender with ModalPopup] (http://forums.asp.net/p/1318051/2624063.aspx#2624063) ? They provided a really nice sample for ModalPopUpExtender Animations. It will give you a true understanding on your concern.
Hope it helps you.
Try returning true by adding return true; on onshowing function
Related
In summary, I do have a modal dialog in Catel, invoked with:
_uiVisualizerService.ShowDialog(viewModel)
Inside that dialog, I do a long process showing a Wait Service:
_pleasewaitservice.Show();
// HARD WORK here
_pleasewaitservice.Hide();
And Then I invoke another modal dialog.
_uiVisualizerService.ShowDialog(configureViewModel)
However, when I click outside of the application while it is doing the hard work (when the pleasewaitservice is shown), the second modal dialog is displayed behind the main application, so I cannot focus the Window because it is behind and it is modal. I have to close the app from the task killer.
After checking it carefully, I realized that origin is the pleaseWaitService. If I don't show it, the second modal dialog is always displayed correctly.
Does anyone have any hint about how to solve it?
I was googling about how to force to set focus in any Window, but I didn't find anything.
Thanks
Regards
Saul Hidalgo.
You might want to try the BringWindowToTop extension method inside the code-behind of the window:
https://github.com/Catel/Catel/blob/46fcc69575e533eb9e02669ebaa2246894dc98d8/src/Catel.MVVM/Catel.MVVM.Shared/Windows/Extensions/WindowExtensions.cs#L237
According to the MSDN document, the close operation on a form shown with ShowDialog() should only cause the form to be hidden. Subsequent calls to ShowDialog() will unhide the form.
This doesn't seem to be case, exactly. I have a form with a tree view on it. The check states are preserved between calls to ShowDialog() but any node expansion the user has done is reset back to its default state. Also, the Load event is being executed every time as well. So it seems to be doing more than just "hiding" the form. Anyone have any idea what's up?
Thanks
I've experienced this issue myself. For some reason, calling Form.Hide or setting visible = false on a modal form will call Form.Close in at least some cases. To work around it I set the opacity to zero. You can also use Form.Show instead.
It is somewhat intuitive if you imagine the behavior of a modal dialogue. It blocks the parent window. So if you hide it then there would be no active window for the user to interact with. FWIW, I think the behavior should have been that the parent becomes active again. That's just not always the case.
I have a main window and a toolstrip on it with different command buttons. In these commands, I've a 'Print' button too (See Below). When I click on 'Print' button , I need to show sub-form as Modal Less Dialog. Because, I've few option on sub-form. If user select them then he/she can interact with Main Form too.
Meanwhile, on show() method I disable all controls on Main Form (see below) as it will be done if I use ShowDialog() method to show sub-form. When I click the Print Button, it's color changed which shows it is focused/selected.
On click sub-form is show like below pic.
Logically, it should return to previous mode when I close sub-form. But, even sub-form is showing... that 'Print' button on Main-Form is still focused/selected. When I close the sub-form, that 'Print' Button still focused/selected like below.
What Event/ Property needs to be changed to make this 'Print' Button to show like as it is in initial state.
I've tried Invalidate(), change BackColor but didn't meet the requirement yet. Any Guidelines ?
Set the CheckOnClick property of your button to false if you don't want it to appear "selected" at all, otherwise toggle the CheckState property on the button when the subform is closed.
Well, Selected Property in ToolStripButton is read only. Anyone, needs to clear the selection of toolstrip buttons can use below method which is invoked via reflections.
MethodInfo method = typeof(ToolStrip).GetMethod("ClearAllSelections", BindingFlags.NonPublic | BindingFlags.Instance);
method.Invoke(yourToolStripName, null);
This comes from : How to Deselect ToolStripItems
Happy Programming.
I'm having a problem with MessageBoxes. When a MessageBox pops up and I go to another window/program the MessageBox sometimes winds up behind the parent dialog. Thus I'm not able to discard the MessageBox since the parent dialog is disabled and I can't move it.
Is there any way of making the MessageBox pop to the front when the parent dialog is clicked or similar? I'm using C#.
Best Regards
When you call MessageBox.Show() it has an overload that takes the Owner as first parameter
:
MessageBox.Show(ParentForm, "Title",...)
That should help with this issue.
I would like to close a modal form when the user clicks outside (anywhere on the computer desktop) the modal form. How can we do this as a modal form is not meant to lose focus.
You need to hook mouse (and keyboard if required) and capture their events. Then check if the click happened outside the form (and area). If yes, flag a sign which can be read by the model form that it can close down.
Algo:
Hook mouse click event.
When callback function is called, check for the click position - if it's inside your form or not (you might need to translate the locations to Desktop locations - I hope you know how to!)
If the point is outside the form, set a flag (boolean or anything that makes you happy). Make sure the form can read the flag somehow.
Trigger an event for form to capture. In it's handler read the flag status. If true, close/unload the form.
This page will tell you technical details and functions.
I don't think you need to make it modal... then you can take siride's option of closing it on the Deactivate event.
The reason you don't need to make it modal: The first time you display it, it will have the focus and be topmost. Modal prevents you from clicking somewhere else, but you want to be able to click somewhere else... and when you do, the form goes away, so there are no modal needs.