VS 2005 Show() - Hide() And Close() Form Several Times?
Jul 16, 2009
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here i am dealing with only two form,so if i add form1.close() in the form2 button click event then it might wok. but what if i deal with many forms and i need to show and hide them several times?
Is there a way to have a form within a program that doesn't dispose when you close it? I have a form in my project and a menu item to show it. When I declare the form globally and show in menuItem.click, then the click event breaks because the form no longer exists. When I declare the form within menuItem.click, then this creates a new form every time I click and that's not what I want.
I have a main form that has a button with which a smaller form is shown. Think of the smaller form as the Find/Replace dialog in many applications, such as Notepad. It's important that the form is (what I believe is called) modal. What I mean is that it always stays on top of the main form. I ensure that by calling the Show method with "Me" as the owner argument. Whenever the small form loses focus it will not disappear into the background but stay visible (albeit out of focus). If you don't understand open up Notepad and have a look at the behavior of the Find/Replace dialog.
Here's my problem: instead of actually closing the form when the X is pressed, I want it to simply Hide itself, so its position and the state of any controls (checkboxes etc) is preserved automatically.To achieve this I simply cancel the FormClosing event and Hide it:
vb.net Private Sub Form2_FormClosing(ByVal sender As System.Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles MyBase.FormClosing
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To show the form, I use the following (note the (Me) to make the main form the owner of the form; this ensures that it remains visible even when it is out of focus):
vb.net Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Form2.Show(Me) End Sub
Now. When I run my project, and open the Form2 (small form), then hide it again (by 'closing' it), I can no longer close the main form (Form1)! It seems the main form cannot close when the small form still exists (albeit invisible)...?? When I don't use the Me argument in the Show method, I don't get the behavior I want. I know I can set the TopMost property to True but that will also cause it to become visible on top of all the other forms, even windows not part of my application.
I'm curious if it is possible to hide a group of text boxes from view in a form until a particular condition is met, and to have a custom set of text boxes for that condition. To give an example; I want radio buttons offering choices for a manner of searching records, the user selects one and then a specific set of text boxes are displayed for the user to utilize, if a different option is chosen a different set of text boxes will be shown. Is this something that can be done?
I have a simple Windows Form that hosts property controls at runtime. When the user clicks Close [X] I want to keep the window and its contents alive rather than killing it by handling the FormClosing event, canceling the event and simply hiding the form.
That's fine but at close of the application I need to actually close the window. I implemented the below but it feels kludgey. Is there a simpler, more clever way to handle this situation? (The form's controller calls KillForm explicitly after it receives a closing event from the main window.)[code]...
you know how you can set the windows taskbar to appear and disappear when the position of the mouse is all the way at the bottom? i want to do the same thing with my form when the mouse is in the top left corner of screen.or perhaps you can suggest to me a different way to do this. the user will probably just need to set those trackbars just several times during their usage.
How would I change it so that it only closes the current form while opening a new one? EDIT: I put [Not Resolved] Because I accidently pressed the resolved thing
My Project having form-1 & form-2. Project starts with Form-1.From the form-1, button1 - click() I want to close the form1 and from2.showform2.show showing form2, but the form-1 is also still opened. How to close form-1?I tried from Form-1 as me.close(). then Form-2 is not showing.So how to close form-1 at the time of form2.show?
I am trying to show a message box when a user clicks the red cross in the top right hand corner of the screen (to close the current form) and I want to code the OK and Cancel buttons so that when the user clicks OK butto the form closes. This is what I have
I have the need to have a close button on a borderless form but I'm unable to find a way to display the win7 close button this way? Is it avalible in any way? (I dont wan't to do it the ugly, ugly, ugly way, IE do a screenshot and use that as a bitmap on a button)
I have two form in my application form1 and form2. Here, i want to show the form2 from form1 by using a button. And i want to reverse back to my form1 from form2 using same technique. But i want to close form1 (Not visible=false or hide) after loading form2 and same thing in reverse back also.
I have an about form which I hope it can close by itself if I move the mouse to somewhere else. I try form_lostfocusevent but unfortunately this can NOT be done
I have a simple GUI form to hide / show / minimize / terminate / force terminate Processes. i can do all well but for show and hide i need the MainWindowHandle to show or hide it
So here is hide process code:
Dim Proc As New Process = Process.GetProcessesById(List.SelectedRows(0).Cells(1)) Dim hwnd = Proc.MainWindowHandle ShowWindow(hwnd,0)
If i try the same with show code:
Dim Proc As New Process = Process.GetProcessesById(List.SelectedRows(0).Cells(1)) Dim hwnd = Proc.MainWindowHandle ShowWindow(hwnd,9)
The MainWindowHandle become 0 cuz its hidden is there is any other way to get the MainWindowHandle of Process ?
Is there an way to supress the validating event of textbox when the forms close button(X) is pressed. In the textbox validating event , if the condition fails then i am displaying an messagebox. Now suppose if the textbox has the focus and user directly presses the forms X button , then the messagebox is displayed
VB.NET Private Sub FrmSettings_FormClosing(ByVal sender As System.Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles MyBase.FormClosing e.Cancel = (e.CloseReason = Forms.CloseReason.UserClosing)
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as wpf's Close event just gives me e.Cancel and no closereason?
I have a spash screen on my project, this isn't just for effect but to read data from a file before my main project is started.the issue is that i cant seam to close my splash screen.....here is the code from my splash screen.[code]....the issue is that mainform does show, but i cant close or hide the splash screen,
i have a frmStatus form and a frmSearch form when i load frmSearch or make search frmStatus opens showing please wait with a picturebox and a animated gif and when the frmSearch is ready to show frmstatus hides before picture box all was well but when i added a picturebox frmstatus shows but it hangsup and the animation is still
I've written a simple program to hide the taskbar clock and close upon load and I've read a lot of different articles on how to close a program correctly and read a multitude of different answers so I thought I'd just post the code and see if it is written cleanly. Also, I am in the process of trying to get the taskbar to refresh after the hide code has ran and how to refresh it would be great too but is not the main question of this article. I'm using Visual Studio 2008 using the Visual Basic Development settings and I have vista 64-bit. Here's the code: